Canada

To explain how perception processes are performed, understanding how continuous sensory streams are temporally segmented into discrete units is central. This is particularly the case in speech perception where temporal segmentation is key for identifying linguistic units contained between consecutive events in time. We propose an original probabilistic construct, that we call &quot;Bayesian gates&quot;, to segment temporally continuous streams of sensory stimuli into sequences of decoders. We first define Bayesian gates mathematically and describe their properties. We then illustrate their behavior in the context of a model of word recognition in speech perception. We show that, based on an event detection module, they sequentially parse the acoustic stimulus, so that each syllable decoder only processes a segment of the sensory signal.

CogSci 2022

Bayesian gates: a probabilistic modeling tool for temporal segmentation of sensory streams into sequences of perceptual accumulators

To explain how perception processes are performed, understanding how continuous sensory streams are temporally segmented into discrete units is central. This is particularly the case in speech perception where temporal segmentation is key for identifying linguistic units contained between consecutive events in time. We propose an original probabilistic construct, that we call "Bayesian gates", to segment temporally continuous streams of sensory stimuli into sequences of decoders. We first define Bayesian gates mathematically and describe their properties. We then illustrate their behavior in the context of a model of word recognition in speech perception. We show that, based on an event detection module, they sequentially parse the acoustic stimulus, so that each syllable decoder only processes a segment of the sensory signal.

poster

Join us for CogSci2022! Our 44th Annual Conference will be centered around the theme of diversity, with an accompanying range of keynotes and invited speakers who themselves highlight the diversity of our field. Our three symposia are Cognition across Diverse Populations, Cognition within Diverse Societies, and Global Challenges for Cognitive Science. The conference is being offered in a fully hybrid environment for onsite and online attendees.
 
 [**The Program at a Glance can be found here**](https://cognitivesciencesociety.org/wp-content/uploads/2022/07/Cogsci-2022-PAAG-Detailed-July-12final-1.pdf)
 [**The Detailed Program can be found here**](https://cognitivesciencesociety.org/wp-content/uploads/2022/08/DeArmond-CogSci2022-program-v113-final.pdf)

This conference requires a registration to attend. Please use the link below to secure your ticket. The website will be available to all registered attendees on July 25th. 

[Register to Attend](https://cognitivesciencesociety.org/registration/)

Registration Is Required

The 44th Annual Meeting of the Cognitive Science Society highlighted research on the theme Cognitive Diversity in addition to the full breadth and diversity of research topics offered by the society’s membership. 





To grasp visual relationships, such as those presented in figures or diagrams, viewers must often compare the spatial relationships between visual structures (e.g., the slopes of two lines, sequences of DNA strands). Past work has found that this visual comparison process is optimized when visuals are placed directly, such that the relational correspondences are obvious (e.g., horizontal spatial structures placed vertically), and weakened when relational correspondences are impeded (e.g., horizontal spatial structures placed horizontally) (Matlen et al. 2020). However, this principle of spatial alignment has yet to be tested with other spatial structures beyond horizontal and vertical structures. Here, we tested this principle using diagonal spatial structures. The results bore out the spatial alignment principle – participants were faster and more accurate when diagonal structures were in direct relative to impeded placements. These findings have important implications for theories of comparison as well as for design and instruction.

Spatial alignment facilitates visual comparison in diagonal structures

Analogy problems involving multiple ordered relations of the same type create mapping ambiguity, requiring some mechanism for relational integration to achieve mapping accuracy. We address the question of whether the integration of ordered relations depends on their logical form alone, or on semantic representations that differ across relation types. We developed a triplet mapping task that provides a basic paradigm to investigate analogical reasoning with simple relational structures. Experimental results showed that mapping performance differed across orderings based on category, linear order, and causal relations, providing evidence that each transitive relation has its own semantic representation. Hence, human analogical mapping of ordered relations does not depend solely on their formal property of transitivity. Instead, human ability to solve mapping problems by integrating relations relies on the semantics of relation representations. We also compared human performance to the performance of several vector-based computational models of analogy. These models performed above chance but fell short of human performance for some relations, highlighting the need for further model development.

Impact of Semantic Representations on Analogical Mapping with Transitive Relations

Understanding how people generalize and extrapolate from
limited amounts of data remains an outstanding challenge. We
study this question in the domain of scalar function learning,
and propose a simple model based on the Principle of Maxi-
mum Entropy (Jaynes, 1957). Through computational model-
ing, we demonstrate that the theory makes two specific predic-
tions about peoples’ extrapolation judgments, that we validate
through experiments. Moreover, we show that existing Gaus-
sian Process models of function learning cannot account for
these effects.

Maximum Entropy Function Learning

Transfer of cognitive abilities has often been described in regard to Working Memory, while little has been said about Cognitive Control. Recent studies have proposed that congruency cues can be used to investigate learning-guided cognitive control adaptations in a trial-by-trial fashion during conflict tasks. In the present study, we employed congruency cues within an inducer/diagnostic paradigm to (1) induce a control learning between cue and string congruency in a Flanker task variant and (2) test whether this learning could transfer to a different Flanker variant. Results provided evidence that participants can learn to strategically employ congruency cues to adapt their cognitive control and that these learned control strategies/routines can be transferred to a very similar task variant (near transfer). Further experiments will be performed to explore the extent of this transfer.

Transfer of Learning-Guided Cognitive Control through Congruency Cues: a study involving two variants of Flanker task

How are experiences of events used to update knowledge of predictive relations in semantic memory? We examined the roles of anterior-lateral entorhinal cortex (alEC), important for encoding recently experienced temporal relations, and middle temporal gyrus (MTG), involved in familiar event concepts. Participants underwent fMRI during exposure to novel event sequences and a memory probe phase (Session 1) and the same process a week later (Session 2). Across distinct sequences, predictive relations among similar events could either be Consistent, or the roles of the events could swap (Inconsistent). We examined the effect of Consistency on the strength of relational memory content. Areas that integrate across diverse experiences should be aided in the Consistent condition. We found that alEC performed this integrative role in Session 1, and at Session 2, similar effects were also observed in MTG. We suggest that these areas both contribute to building relational knowledge from experience.

Integration of Event Experiences to Build Relational Memory in the Human Brain

Categorization is a fundamental cognitive strategy employed to ease information processing and to aid memory formation. Past research on how humans categorize objects has used images of objects as experimental stimuli. Concurrently, studies in the past 10 years have found differences in the processing of images as compared to real-world objects. One proposed explanation is that these results are due to differences in the affordances of images versus objects. Using a similarity judgement paradigm, we explored the effect of affordances in a categorization task including words (object names), images, and objects. Consistent with previous research, we found significant differences in how participants made similarity judgements of images and objects. Moreover, we found that similarity judgments using object names were much more similar to the judgments of pictures than of objects. An exploratory cluster analysis opens the possibility of framing such differences as affordance driven. These results suggest a need for more ecologically valid categorization tasks, more conservative inferences when using images as stimuli in these tasks, and the need for further exploring the role of affordances in categorization.

The Treachery of Images: Objects, Pictures, Words and the Role of Affordances in Similarity Judgements

Biodiversity is a complex concept entailing scientific and political aspects. The usage of analogies, especially metaphors, that have positive influences on the understanding of complex concepts, on attitudes and behaviors, seems an interesting strategy to achieve this goal. Based on biodiversity analogies elaborated by 259 participants, a first study aims to identify two important protective approaches: preservationism that encourages humankind to limit their intervention on nature and conservationism that allows humankind to exploit nature with parsimony. We analyzed their analogies and results highlight three major groups: a scientific, a conservationist and a preservationist dimension. A second study investigates the effects of metaphorical framing on environmental attitudes and behaviors. 277 University students read a short text framing biodiversity with a preservationist or conservationist metaphor or without metaphor framing. A decision-making task and an environmental concern scale were completed. Results showed an effect of the conservationist metaphor on the decision-making task.

Framing biodiversity Conceptions

The way we think about social issues may be significantly affected by the language used to speak about them. Thibodeau & Boroditsky (2011) found that significant differences in reasoning were noted after exposure to even a single metaphor. In four experiments, we suggest similar findings through testing the effects of metaphorical framings of the crisis of homelessness in Los Angeles County where either 1) HOMELESSNESS IS AN ILLNESS, 2) HOMELESSNESS IS A HOSTILE ENCOUNTER or 3) a non-metaphorical framing. Participants read a brief passage or were given visual stimuli (a novel approach) designed to evoke one of the frames or the control and then responded to a series of questions on how to best address the issue. Current analysis of the data in the ongoing survey suggests that use of conceptual metaphor leads participants to recruit frame-semantic knowledge of the source domain to draw inferences that lead to differences in reasoning.

Addressing homelessness in LA County by combat or cure: Examining the effect of conceptual metaphor on reasoning

Reasoning and reflective thought are critical to the study and practice of philosophy. However, findings from social cognition have challenged the extent to which many decisions are driven by explicit reasoning. We report an experiment that examines how reflective thinking impacts subjects’ judgements on various philosophical topics. Subjects were presented various scenarios on common philosophical topics (e.g., mind-body dualism); each scenario stated a given position. Some subjects were asked to indicate the extent to which they endorsed these positions (control), whereas others were asked to engage in a reflective thinking task before making this choice. Our results revealed that the reflective thinking group was more skeptical of the scenarios’ stated positions than the control group, but this effect depended on the topic of the scenarios. Thus, reflective thinking and reasoning do indeed seem to impact philosophical judgments, but this effect seems to depend on the topic under consideration.

The Effects of Reflective Reasoning on Philosophical Dilemmas

The Distribution Question (DQ) asks: Can we know which animals beside humans are conscious? The current best practices for answering DQ rely on a version of a marker approach, which seeks to find some observable features that indicate consciousness. I argue that the marker approach all but guarantees a positive answer regarding any animal selected for investigation-including sponges. This makes answering the DQ currently unachievable. What will turn it into an achievable goal is to have a robust theory of consciousness, which, I argue, requires we adopt the premise that all animals are conscious.

Premium content

Bayesian gates: a probabilistic modeling tool for temporal segmentation of sensory streams into sequences of perceptual accumulators

Next from CogSci 2022

Spatial alignment facilitates visual comparison in diagonal structures

Stay up to date with the latest Underline news!

PRESENTATIONS

CONFERENCES

COMPANY

RESOURCES