Format: Hybrid

According to a widely held convention, episodic memories are taken to be memories of events from one’s personal past, experienced with one’s own senses. Moreover, according to a widespread taxonomy in psychology and philosophy, episodic memories are classified as a kind of memory in its own right. The present talk challenges those assumptions and investigates whether there are any distinctive differences in kind between episodic and so-called vicarious memories – i.e., memories based on lively reports of familiar people and not necessarily of events from one’s personal past. The talk approaches this issue along five dimensions: (i) Biological naturalism, according to which a “natural kind” is the maximal class whose members are likely to share their relevant explanatory, inductive, and causal-interventionist properties because of some uniform underlying causal mechanism. (ii) Epistemology, where episodic memory as a privileged source of knowledge is at issue. (iii) Language use regarding the verb “remember”; as well as (iv) phenomenology and (v) personal identity.

Zoom link:

https://ruhr-uni-bochum.zoom.us/j/66419012771?pwd=SWc0dG55SUNTcStyVTVIR09KZE94UT09

Meeting ID: 664 1901 2771

Passcode: 118467

Format: Virtual

Memories are not identical reproductions of past experience, but rather a filtered and reconstructed version of what actually happened. In this talk, I will discuss the role of hippocampal and cortical network interactions in transforming experience into memory. I will present evidence that this transformation process begins at encoding, as event details are prioritized and bound through medial temporal lobe interactions. As memories are retrieved, these details are reconstructed through cortico-hippocampal networks that mediate the experience of recollection. Together, these results highlight the utility of network approaches for characterizing the complexity of multidimensional episodic representations.

This talk will be virtual with Maureen Ritchey joining us via video conference from the USA.

Zoom link:

https://ruhr-uni-bochum.zoom.us/j/66419012771?pwd=SWc0dG55SUNTcStyVTVIR09KZE94UT09

Abstract:  In the empirically-informed philosophical literature, conscious recollection, of the kind characterised by sensory mental imagery, is typically tied to the notion of episodically remembering specific events in one’s personal past. One might worry that this overlooks distinctive ways in which we sometimes recollect persisting objects. Of course, one way to recollect an object is by remembering an event in which one encountered it, but it also seems possible to recollect, say, a person from one’s remote past without remembering any event(s) in which one encountered them. In this talk I’ll explore the significance to philosophy (and perhaps semantics) of remembering objects, and I'll consider whether theorising about these neglected cases need introduce any complexities for dialogue between philosophy and cognitive science.

Format: Hybrid

James Openshaw will give his talk in person in GA 04/187 at the Ruhr University Bochum

Zoom link:

https://ruhr-uni-bochum.zoom.us/j/66419012771?pwd=SWc0dG55SUNTcStyVTVIR09KZE94UT09

Format: Hybrid

Efficient data compression is essential for capacity-limited systems, such as biological perception, memory, and attention. We hypothesize that the need for efficient compression shapes biological systems in many of the same ways it shapes engineered systems. If true, then the tools engineers use to analyze and design systems, namely rate-distortion theory (RDT), can profitably be used to understand human behavior. In this talk, we'll start by discussing three general principles for efficient data compression, and provide experimental data evaluating the implications of these principles for human performance. Next, we'll note that exact RDT methods are often computationally intractable, and explore a deep neural network architecture that implements RDT in an approximate manner. Lastly, we'll hypothesize that perception, sensory memory, short-term memory, and long-term memory lie along a continuum, differing primarily in terms of their capacity limitations. 

This talk will take a hybrid format with Robert Jacobs joining us via video conference from the USA.

Zoom link:

https://ruhr-uni-bochum.zoom.us/j/66419012771?pwd=SWc0dG55SUNTcStyVTVIR09KZE94UT09

The B-Bo Memory Symposium is a collaborative effort of the SFB 1280, SFB 874, SFB 1315 and the FOR 2812. It is an internal event where all members get to network and build synergies and collaborations between research groups. This years event will either take place in Bochum or virtually. Further details will be announced on the B-Bo Memory Alliance's web site.

We are delighted to welcome Pernille Hemmer to Bochum. This talk will take a hybrid form please sign up here https://forms.gle/oXng9f2bDcT7oXp46 so that we can plan accordingly. Registration for in person participation closes Sunday 06.03.22

Zoom link:

https://ruhr-uni-bochum.zoom.us/j/69456334528?pwd=UjdWekRzTDdmV043T1U1UWpJcnhPQT09

Meeting ID: 694 5633 4528

Passcode: 828030

Endel Tulving definded episodic memory as the record of a person’s sensory, conceptual, temporal, spatial, emotional, and self-referential experiences associated with a personally witnessed event. The self-referential aspect, which Endel Tulving called ‘autonoetic consciousness’, hallmarks in his view defining features of episodic memory: self-involvement, subjective sense of time, and consciousness of encoding and retrieval. Consequentially, he denied young infants, unconscious humans, and animal species episodic memory. But encoding and remembering are neurocognitive processes that build up at any moment, transcending an unconscious state before entering consciousness. This begs the question what the encoded or retrieved information is the moment before entering consciousness, if not episodic memory? And what is this information, if not episodic memory, while being replayed during the unconsciousness of slow-wave sleep? In this talk, I summarize recent experimental evidence in wake humans forming memories from subliminal images (not visible to the conscious mind) and evidence in unconscious humans forming memories during slow-wave sleep. I finally propose a computational definition of episodic memory that no longer includes consciousness and the self/identity as defining features. Instead, I suggest that building blocks of episodic memory are the flexible associations formed at encoding between sensed aspects of an episode’s constituents (space, time, percepts, concepts, etc.). Identity or the self may or may not be constituents of an episodic memory. I suggest that an episodic memory may be formed with and without consciousness and that the formed memory may change its representational status from conscious to unconscious and vice versa during its lifetime. Computational definitions of episodic memory allow for comparative memory research in preverbal infants, nonverbal or aphasic humans, unconscious humans, humans lacking perceptual dimensions, and animal species.

Zoom link: https://ruhr-uni-bochum.zoom.us/j/69456334528?pwd=UjdWekRzTDdmV043T1U1UWpJcnhPQT09

Meeting ID: 694 5633 4528 

Passcode: 828030

Intentional states can be understood as involving content and a particular attitude taken towards that content. States that involve a cognitive attitude, such as beliefs, play an epistemic or guiding role, and have a mind-to-world direction of fit—they are satisfied if the intentional state matches the world. States that involve a conative attitude, such as desires, play a motivational role, and have a world-to-mind direction of fit—the world must be made to match the content of the mental state. What direction of fit do memory and imagination possess? Memory, like belief, seems to have a mind-to-world direction of fit. Our memory is successful or correct if it matches the (past) world. Yet is the same true of imaginings? I suggest that some forms of imagination play a guiding role and share this mind-to-world direction of fit with memory. Yet other varieties of imagination, such as many instances of episodic prospection, seem to have a world-to-mind direction of fit. Many episodic future thoughts function like desires, in that one seeks to shape the world to fit with how one imagines it. These conative imaginings, I suggest, play a motivational rather than a guiding role in our cognitive economies, and they involve a distinct kind of attitude to episodic remembering.

Zoom link: https://ruhr-uni-bochum.zoom.us/j/69456334528?pwd=UjdWekRzTDdmV043T1U1UWpJcnhPQT09

Meeting ID: 694 5633 4528 

Passcode: 828030

This talk will be given in tandem by Prof. Echterhoff and Dr Ullrich Wagner

The construction of episodic memories is often shaped by interpersonal communication. For instance, after communicators have adapted (“tuned”) their messages to their audience’s position (judgment, attitude) toward a topic, their memory for the topic is typically biased in the direction of their audience-tuned message. A bulk of research suggests that this audiene-tuning memory bias can be conceptualized as the result of the communicators’ creation of a shared reality with their audience.
In this talk, we present recent findings on the cognitive and motivational underpinnings of this bias.  According to a motivational account of cognitive accessibility (Eitam & Higgins, 2010), information that is congruent (vs. incongruent) with the attitude of the audience toward the target person should be more accessible than audience-incongruent information. In our experiments, accessibility was empirically assessed by reaction times. Three experiments consistently reveal that, across different experimental variations, audience-congruent trait information becomes more accessible than audience-incongruent trait information, as indicated by speedier reactions (see Figure 1). Furthermore, this trait-level accessibility bias correlated with communicators’ epistemic trust in their audience and with a novel self-report measure assessing the experience of shared reality about the target person.
In conclusion, we argue that traits comprise situation-invariant characteristics of a person. Thus, traits (vs. specific behaviors) capture information that is stable across different episodes and hence have to a greater extent the quality of semantic (vs. episodic) information. The present findings are consistent with the notion that the established audience-congruent recall bias emerges from the enrichment of episodic memory traces with semantic information (Cheng & Werning, 2016), resulting in the evaluatively biased construction of an episode about the original behaviors of the target person.

Zoom link: https://ruhr-uni-bochum.zoom.us/j/69456334528?pwd=UjdWekRzTDdmV043T1U1UWpJcnhPQT09

Meeting ID: 694 5633 4528 

Passcode: 828030

The beneficial effect of congruency between new information and prior knowledge is a well-established finding in memory research. At the same time, mismatch between prediction (presumably based on prior knowledge) and actual experience leads to prediction error signal, which has been postulated to enhance one-shot episodic learning as well. I will present an overview of theoretical model and experimental studies that aim at resolving the apparent paradox of enhanced memory for prediction-matching events vs. prediction-violating events. The findings thus far underscore that the relationship between prediction error and episodic memory is far from being well characterized.

Zoom link: https://ruhr-uni-bochum.zoom.us/j/69456334528?pwd=UjdWekRzTDdmV043T1U1UWpJcnhPQT09

Meeting ID: 694 5633 4528

Password: 828030

Cognitive archaeologists deploy increasingly precise evidence about changes in material culture, social organisation, technical skill, and symbolic activity to identify historical changes in cognition. Although memory is a natural domain for such enquiry, some views of its nature, functions, and evolution make it hard to find room for substantial cognitive change on the timescales in question. I explore a hypothesis about the emergence of richer personal memories around the larger stable settlements of the Neolithic Middle East like Çatalhöyük, c.7000-6000 BCE. I bring archaeological evidence into contact with two bodies of work on memory in cognitive theory: on the social and communicative role of episodic recall, and on the scaffolded or situated nature of remembering. Basic human capacities for remembering, imagining, and mental time travel, in place well before the Neolithic, are deployed or knitted together in specific, culturally-inflected ways. Children learn skills of and norms for autobiographical remembering in slow, multi-staged, variable processes of enculturation, involving diverse cognitive, affective, interpersonal, and narrative resources. The hypothesis that the Neolithic saw significant if uneven changes in these norms and practices, with new demands on tracking events and commitments over time, can help sharpen the requirements for assessing claims about cognitive change.

Zoom link: https://ruhr-uni-bochum.zoom.us/j/91270017621?pwd=SVRFUEpqZnoxZ0RSazkyQ1ZVY202QT09

Meeting ID:912 7001 7621 Passcode: 306406

In the past few decades, episodic memory has been studied extensively, but so far little is understood about how episodic memory is used to affect behavior. In this talk, I will present our hypothesis and preliminary modeling results. We postulate that episodic memory can either be retrieved and directly used for decision-making, or be replayed to the neocortex so that it learns a solution of a cognitive task. We term these two kinds of learning one-shot learning and replay learning, respectively. Meanwhile, a third learning paradigm is implied where the neocortex directly extract information from online experiences as they occur, but does not have access to these experiences afterwards (online learning). Hence, hippocampal animals or patients can only employ online learning, but not one-shot or replay learning. I will show that whether a subject (an artificial agent in the simulation) is able to solve a task by relying on the three learning paradigms depends differently on the number of learning trials and the complexity of the task. This finding can help us understand better the sometimes contradictory findings on whether a certain task such as, for example, contextual fear conditioning is dependent on the hippocampus or not. We believe that understanding how episodic memory affects behavior will be an important step towards elucidating the nature of episodic memory.

Zoom link: https://ruhr-uni-bochum.zoom.us/j/69456334528?pwd=UjdWekRzTDdmV043T1U1UWpJcnhPQT09

Meeting ID: 694 5633 4528 

Passcode: 828030

Memory skills differ considerably across the general population – from age-related memory loss to the outstanding feats of memory champions. Memory research focuses largely on normal or impaired memory, whereas little is known about the cognitive and neurobiological basis of exceptional memory skills. I will present insights from a series of studies on the world’s leading memory champions, and naïve subjects undergoing mnemonic training. Our studies suggest that the outstanding skills of memory champions rely on mnemonic strategies that allow for more efficient neural coding, and a direct access to long-term memory structures also during classical working memory tasks. Moreover, training in these strategies drives regional brain activation and network connectivity also in normal individuals towards the neural patterns observed in memory champions.

Zoom link: https://ruhr-uni-bochum.zoom.us/j/69456334528?pwd=UjdWekRzTDdmV043T1U1UWpJcnhPQT09

Meeting ID: 694 5633 4528 

Passcode: 828030

The second retreat of the research unit FOR2812 will take place on Sept. 24th and 25th 2021. We will discuss results from our research, plan the conference that is to take place at the end of the first funding period and prepare our grant application for a second funding period. For us it is all about an interdisciplinary approach so we will focus on setting up collaborations between projects and developing new interdisciplinary ideas.

Memories for events require a particular viewpoint, but we can also flexibly shift our viewpoint to novel perspectives during remembering. Shifting to a novel perspective can reshape the characteristics of memories and is supported by regions in the posterior parietal brain regions. However, not all individuals are able to flexibly shift the visual perspective of their memories. In this talk, I will discuss recent research distinguishing the function of the precuneus and angular gyrus in shifting perspective, the role of individual differences in perspective taking abilities, and impact of shifting perspective on emotional aspects of memories.

Zoom meeting room details:

Link: 

https://ruhr-uni-bochum.zoom.us/j/95260951194?pwd=UFNCZmFpaWpTaGpvbnVoWmQ1WmY0Zz09

Meeting ID: 952 6095 1194

Passcode:  452163

The development of shared memories is a fundamental characteristic of human communities. From small groups such as families to large ones such as nations, communities form collective memories of past events that often impact their identities and behaviors. This emergent outcome (i.e., shared memories) is thought to occur owing to a dynamic system of information sharing and memory updating, which fundamentally depends on communication. In this talk, I will present a research program to study how communities dynamically form these collective memories. Using experiments that involve conversational interactions in social networks, I will show how large-scale social phenomena (i.e., collective memory) can emerge out of microlevel local dynamics (i.e., mnemonic reinforcement and suppression effects). The social-interactionist approach proposed herein points to optimal strategies for spreading information in social networks and provides a framework for measuring and forging collective memories in communities of individuals. 

Zoom meeting room details:

Link: 

https://ruhr-uni-bochum.zoom.us/j/95260951194?pwd=UFNCZmFpaWpTaGpvbnVoWmQ1WmY0Zz09

Meeting ID: 952 6095 1194

Passcode:  452163

Memory has long been conceived as a dynamic process. As Bartlett (1932) noted, “Remembering is not the re-excitation of innumerable fixed, lifeless and fragmentary traces, but rather an imaginative reconstruction or construction…”. Nevertheless, existing studies have largely emphasized the reactivation of encoded neural representations during memory retention and retrieval, whereas the dynamic nature of memory are still poorly understood. To address this question, we employ functional magnetic imaging (fMRI), intracranial electroencephalogram (iEEG) and magnetoencephalography (MEG) imaging technology to examine the neural representations with high spatial and temporal resolutions. In addition, by linking neural representations with deep neural network model, we could infer the representational formats during different memory stages and in different brain regions. Our results suggest that the reactivated representations during long-term memory retrieval have been systematically transformed from the encoded representations, in terms of both the representational formats and the brain regions containing the representations. Furthermore, this representational transformation occurs much faster than previously thought: it starts right after stimulus offset and continue to evolve from short-term memory retention to long-term memory retrieval. Finally, it is suggested that greater representational transformation during encoding is predictive of better long-term memory, and effective learning strategies, such as spaced learning and retrieval practice, often involve greater representational transformation. These results not only help us understand how memory is constructed and reconstructed, but also hold the potential to understand the role of episodic memory in supporting other cognitive functions, such as problem-solving and creative thinking.

Zoom meeting room details:

Link:

https://ruhr-uni-bochum.zoom.us/j/95260951194?pwd=UFNCZmFpaWpTaGpvbnVoWmQ1WmY0Zz09

Meeting ID: 952 6095 1194

Passcode:  452163

Visual images are a ubiquitous tool for representing and communicating information. This is true looking at the world around us – e.g., advertisements, news, and social media. It is also true when looking at the world within: Mental imagery is a frequent, and functional, feature of human cognition. Imagery necessarily has a perspective, and when it comes to actions and events, they can be visually depicted either from the actor’s first-person perspective or observer’s third-person perspective. This talk will review a program of research exploring the social-cognitive function of visual perspective in event imagery. This work supports a novel model of imagery perspective’s function by identifying a critical mechanism by which perspective operates: by shaping cognitive processing style. First-person imagery supports a processing style in which people’s understanding of events emerge from particular sensations and low-level associations that the concrete features of the pictured event evoke. Third-person imagery supports a processing style in which people’s understanding of events follows from a coherent integration of the pictured event with other high-level relevant knowledge according to the logic that governs an abstract belief system. These effects of imagery on cognitive processing style hold, regardless of whether imagery is internally generated or externally presented, and whether imagery depicts one’s own or others’ actions. This talk will review evidence supporting this model of imagery perspective’s cognitive function and demonstrating implications for judgment, emotion, and behavior. These findings distinguish the visual dimension of perspective from other dimensions on which perspective may vary and suggest connections with other theories concerning the self, memory, and event representation, as well as implications for phenomena including behavioral change, emotional coping, decision-making, and self-insight.

Zoom meeting room details:

Link: 

https://ruhr-uni-bochum.zoom.us/j/95260951194?pwd=UFNCZmFpaWpTaGpvbnVoWmQ1WmY0Zz09

Meeting ID: 952 6095 1194

Passcode:  452163

A lecture in the mini-lecture series "Memory and Self" organized by the Bochum-Grenoble Research Center. With scientific organization by Albert Newen (FOR 2812 - P7) and Kourken Michaelian (FOR 2812 - Mercator Fellow).

For more information including Zoom links to the meetings please visit http://phil-mem.org/events/2021-self.php

A lecture in the mini-lecture series "Memory and Self" organized by the Bochum-Grenoble Research Center. With scientific organization by Albert Newen (FOR 2812 - P7) and Kourken Michaelian (FOR 2812 - Mercator Fellow).

For more information including Zoom links to the meetings please visit http://phil-mem.org/events/2021-self.php

A lecture in the mini-lecture series "Memory and Self" organized by the Bochum-Grenoble Research Center. With scientific organization by Albert Newen (FOR 2812 - P7) and Kourken Michaelian (FOR 2812 - Mercator Fellow).

For more information including Zoom links to the meetings please visit http://phil-mem.org/events/2021-self.php

A lecture in the mini-lecture series "Memory and Self" organized by the Bochum-Grenoble Research Center. With scientific organization by Albert Newen (FOR 2812 - P7) and Kourken Michaelian (FOR 2812 - Mercator Fellow).

For more information including Zoom links to the meetings please visit http://phil-mem.org/events/2021-self.php

Episodic memories are widely regarded as memories of personally experienced events. Early concepts about episodic memory were based on the storage model, according to which experiential content is preserved in memory and later retrieved. However, overwhelming empirical evidence suggests that the content of episodic memory is – at least to a certain degree – constructed in the act of remembering. Even though very few contemporary researchers would oppose this view of episodic memory as a generative process, it has not become the standard paradigm of empirical memory research. This is particularly true for studies of the neural correlates of episodic memory. Further hindering progress are large conceptual differences regarding episodic memory across different fields, such as neuroscience, philosophy, and psychology. This interdisciplinary workshop therefore aims to bring together researchers from all relevant fields to advance the state of the art in the research on generative episodic memory.

For more information about the workshop including: call for papers, registration, program, etc. please visit https://for2812.rub.de/gem2021

A central idea in the grounded cognition framework is that memory consists of simulated action and perception. Results of empirical studies indicate that pictures of manipulable objects such as coffee cups and hammers activate the motor actions that are compatible with the grasping actions that would be performed on a real object. Researchers have concluded from these results that motor simulations are central to object recognition. The best examples are studies showing alignment and grasp compatibility effects. These studies have shown that responses to irrelevant stimulus properties, such as color or upright/inverted orientation, are faster if the response hand is on the same side as the object’s graspable part than if it is on the other side (i.e., the alignment effect). Likewise, responses are faster when the required response grip (e.g., precision grip) matches the grip that would be used on the object than when it does not match (i.e., the grasp compatibility effect). These findings have traditionally been interpreted as providing evidence for the view that object perception results in the automatic activation of specific actions associated with the object. An alternative view, however, proposes that these effects are best explained by abstract spatial coding. In this view, alignment and grasp compatibility effects are variations of the standard Simon effect. In this talk I will review evidence from our lab that is consistent with this latter interpretation.

Zoom meeting room details:

Link: 

https://ruhr-uni-bochum.zoom.us/j/99840180341?pwd=anNRSk9WakRLd01tR1ZuMnBiaUlwQT09

Meeting ID: 998 4018 0341

Passcode:  Fb852v

The issue on how traumatic experiences affect memory has led to one of the most contentious debates in psychological science. A widely held belief is that traumatic experiences can result in repressed memories referring to an unconscious blockage of memories. The idea of repressed memories, however, does not rest on sound scientific assumptions and can lead therapists to suggestively seek for hidden buried memories resulting in the creation of false memories of sexual abuse. Numerous legal cases have shown that such false memories can lead to false accusations and even wrongful convictions. In this talk, I will show that this debate is far from over. Many academics, legal professionals, and members from the general public continue to believe in unconscious repressed memories. I will show what the likely causes are of this belief and stress that this belief will continue to damage the legal system potentially leading to more false accusations.

Zoom meeting room details:

Link: 

https://ruhr-uni-bochum.zoom.us/j/99840180341?pwd=anNRSk9WakRLd01tR1ZuMnBiaUlwQT09

Meeting ID: 998 4018 0341

Passcode:  Fb852v

Together with Benjamin Jainta

When we remember personally experienced episodes, we mentally travel back in time and create a scenario of the past. The novel framework of our research group suggests that during scenario construction, the episodic memory trace, entailing information about an episodes sequential structure, is enriched with relevant semantic information. However, episodic memories are not like exact video-recordings of our past that we can simply watch over and over again. On the contrary: episodic memories are flexible and prone to change. It is believed that internal models derived from memories are regularly updated based on new information which allows us to maintain valuable predictions in an ever-changing environment. What still remains to be understood is (1) how the two components in scenario construction (sequential and semantic information) are involved in memory updating on a neural level and (2) which conditions render episodic memories more or less prone to change. To address these questions, we conducted a functional magnetic resonance imaging (fMRI) experiment in which we violated expectations based on before encoded episodes on a sequential and semantic level and additionally applied two experimental factors, self-performance and self-perspective, which manipulated the experiential quality of episodes. In our talk, we will focus on presenting the methods of our study which will also serve as a basis for our follow-up experiments and discuss preliminary results.

Zoom meeting room details:

Link: 

 https://ruhr-uni-bochum.zoom.us/j/99840180341?pwd=anNRSk9WakRLd01tR1ZuMnBiaUlwQT09

Meeting ID: 998 4018 0341

Passcode:  Fb852v

Memory research has accumulated a wealth of data over the last decades. However, it seems that the more we learn, the less we know about what memory is and how it works. I propose that the way forward is to acknowledge that memory is always studied indirectly and that observed behavior is always the result of a complex interaction of several cognitive processes, which in isolation can be fairly simple. By contrast, the conventional interpretation is that any observed behavioral effect in a memory study is the result of memory processing, which makes memory seem highly complex. Taking a computational model of recognition memory as an example, I will show that many factors that previously were interpreted as attributes of the recognition memory system can be modeled as the result of other factors such as the stimulus statistics or a decision making process. Even the need for two distinct memory processes, called recollection and familiarity, vanishes in our model. This view of a simple generic memory that is used in a much more complex process has enabled us to account for other phenomena such as ABA renewal and the dependence of visual discrimination on the hippocampus. We believe that this approach has even wider applicability and work towards extending it.

Zoom meeting room details:

Link: 

 https://ruhr-uni-bochum.zoom.us/j/99840180341?pwd=anNRSk9WakRLd01tR1ZuMnBiaUlwQT09

Meeting ID: 998 4018 0341

Passcode:  Fb852v

Episodic memory can be thought of as involving a form of temporal perspective-taking. The remember imaginatively occupies a point in time in the past. This is also sometimes referred to as mental time travel. I will offer some reflections on what this human ability to engage in temporal perspective-taking consists in, including how it differs from spatial perspective-taking and how it might be related to counterfactual reasoning abilities.  

Zoom meeting room details:

Link: 

 https://ruhr-uni-bochum.zoom.us/j/93607143813?pwd=d1A1QVhydTFkNnpHK2xrWHh2MEg1dz09

Meeting ID: 936 0714 3813

Passcode:  374170

Zoom meeting room details:

Link: 

https://ruhr-uni-bochum.zoom.us/j/97457942133?pwd=SGVEdTZmY0UxZGEvVlkzZlYyZnpxUT09

Meeting ID: 974 5794 2133

Passcode:  374170

Judgments based on episodic memory are often thought to be immune to errors of misidentification (IEM). Yet there is a certain category of episodic memories that seems to threaten this supposed immunity of our memory-based judgments. Are observer memories a threat to the (potential) IEM feature of memory-based judgments? In recent years the phenomenon of observer memories has raised a growing amount of interest amongst philosophers, in particular due to its potential implication for the issue of IEM. In the resulting ongoing debate, some say that observer memories are a threat to the IEM enjoyed by episodic memory (Michaelian, 2020); others say that such memories pose no such threat (Fernández, 2018; Lin, 2020). In this paper, we argue for a middle way. First, we frame the debate, claiming that the existing literature lacks a satisfying definition both of observer memories and of the precise issue of errors of identification in such memories. Then, we contribute to the debate by challenging an anti-separatist assumption about the relation between phenomenal and intentional features of observer memories that looms behind this debate. On this assumption, if the rememberer’s self is built into the phenomenal content, by implication it is also built into the intentional content. We reject this assumption and offer a moderate separatist account of the relation between phenomenal and intentional content. Then, distinguishing between different species of observer memories by drawing upon the empirical literature, we say that for one species the rememberer’s self is part of the phenomenal content but not built into the intentional content: such observer memories are not a threat to IEM. In contrast, for another species of observer memories, the rememberer’s self is both part of the phenomenal content and intentional content. This species of observer memory poses a threat to IEM in a qualified way. In particular, whether this species of observer memory is a threat to IEM or not depends on the type of information that is used to construct the representation of the self in such images.

Zoom meeting room details:

Link:

https://ruhr-uni-bochum.zoom.us/j/97204546502?pwd=RmxsYUdRSzNzVVhiY3o3L0xpSnd3UT09

Meeting ID: 972 0454 6502

Password: 671485

In this article, I outline various ways in which artifacts are interwoven with autobiographical memory systems and conceptualize what this implies for the self. I first sketch the narrative approach to the self, arguing that who we are as persons is essentially our (unfolding) life story, which, in turn, determines our present beliefs and desires, but also directs our future goals and actions. I then argue that our autobiographical memory is partly anchored in our embodied interactions with an ecology of artifacts in our environment. Lifelogs, photos, videos, journals, diaries, souvenirs, jewelry, books, works of art, and many other meaningful objects trigger and sometimes constitute emotionally laden autobiographical memories. Autobiographical memory is thus distributed across embodied agents and various environmental structures. To defend this claim, I draw on and integrate distributed cognition theory and empirical research in human-technology interaction. Based on this, I conclude that the self is neither defined by psychological states realized by the brain nor by biological states realized by the organism, but should be seen as a distributed and relational construct.

People have vivid, confidently held memories of the circumstance in which they learned of a public, emotionally charged event, as well as memories about the event itself. The dynamics though which these memories are formed and retained are investigated in the context of the attack of September 11, 2001 in the United States. The results of a 10-year longitudinal study, a study on intergenerational transmission of memories, and a study on ageing will be discussed. The role flashbulb memories play in allowing people to give witness to public tragedies will be explored.

Our memories are not static. Each attempt to retrieve a past event can adaptively change the underlying memory space. Here I discuss my work on the neurocognitive mechanisms that enable the selective retrieval of episodic memories. I present behavioural and electrophysiological (M/EEG) work that provides insight into how a memory trace unfolds in time during retrieval, on a sub-trial scale. Further, I show evidence from a series of fMRI studies in which we track the representational changes that occur in a memory trace over time and across repeated retrievals. The latter findings demonstrate that retrieval adaptively modifies memories by strengthening behaviourally relevant and weakening behaviourally irrelevant, interfering components. Together, this work sheds light onto the neural dynamics of the retrieval process, and informs theories of adaptive memory.

In recent years, analysis of functional magnetic resonance imaging (fMRI) data in humans has expanded to include approaches focusing on the relational content in patterns of fMRI data rather than single-voxel activation profiles. Among these so-called multivariate pattern analysis (MVPA) techniques, representational similarity analysis (RSA) is the one that has most often been used to explore how semantic structure is represented in similarity patterns in the brain. Interestingly, RSA has also been used to show that when previously unrelated elements become linked through episodic memory, brain regions such as the hippocampus respond with changed pattern similarity for these elements. Thus, this analysis approach is well suited to investigate the interaction between semantic and episodic memory. In my talk, I will first give a general overview over what RSA is and how it has been applied in previous studies. Then, I will present ideas for the experiments in our project P4, and show some preliminary results from piloting studies.

The first retreat of the research unit FOR2812 will take place on Sept. 27th and 28th 2019. We will discuss preliminary results and plan the workshop that is to take place in 2020, as well as install the collaborations between the subprojects.