Cognitive Science

Wintersemester 2019 - 2020

Fridays at 10AM, Building 6

November 08, 2019

Speaker: Cristiane Souza (ISCTE - Lisbon University)

Topic: Declarative memories in ASD: the role of conceptual knowledge in retrieval and the hippocampal connectivity.

Abstract: Individuals with Autism Spectrum Disorders (ASD) present a distinctive pattern regarding declarative memories [1]. Although their general semantic-memory is preserved [1,2], they present episodic-memory impairments associated with a compromised activity of the left hippocampal region indicating possible shortcomings in categorical processing [1]. Moreover, they have difficulties in processing atypical-items (i.e., items that are less representative of their own category, as “penguin” as a “bird”) [2,3] in comparison with healthy participants, to whom the distinctiveness of atypical items enhances episodic-memory retrieval [4]. Taking together, this possible pattern of impairments in both declarative memories suggests a compromised hippocampus-cortical network. Examining declarative memories interaction in this clinical group might provide relevant cues about the role of the hippocampus in human memory systems. The present study examined the role of conceptual knowledge - encoding-schemas (categorical X perceptive) and typicality (typical X atypical) - on retrieval in ASD in comparison with a typically developed control group. Specifically, we investigated the hypothesis that typicality-related impairment impacts retrieval in this clinical group due to alleged anomalies in hippocampal connectivity. Results are discussed in light of the interdependence hypothesis of semantic-memory and episodic-memory systems, particularly focusing on the role of the hippocampus in semantic memory-formation.

 

References:

1. Gaigg, S. B., Bowler, D. M., Ecker, C., Calvo-Merino, B., & Murphy, D. G. (2015). Episodic recollection difficulties in ASD result from atypical relational encoding: Behavioral and neural evidence. Autism Research, 8(3), 317-327.

2. Carmo, J. C., Duarte, E., Pinho, S., Filipe, C. N., &, Marques, J. F. (2016). Preserved proactive interference in Autism Spectrum Disorder. Journal of Autism and Developmental Disorders, 46(1), 53-63.

3. Gastgeb, H. Z., & Strauss, M. S. (2012). Categorization in ASD: The role of typicality and development. Perspectives on Language Learning and Education, 19(2), 66-74.

4. Alves, M., & Raposo, A. (2015). Is it a bird? Differential effects of concept typicality on semantic memory and episodic recollection. Revista Portuguesa de Psicologia, 44, 65-79.

November 15, 2019 - Exceptionally at 2pm

Speaker: Joerg Beringer (BeriSoft Inc.)

Topic: Cognition Lab

Abstract: Joerg Beringer (Berisoft) will talk about Cognition Lab - a Web-based Cognitive Testing (www.cognitionlab.com)

November 22, 2019

Speaker: Radha Nila Meghanathan (Graduate School member)

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November 29, 2019

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December 06, 2019

Speaker: Radha Nila Meghanathan (Graduate School member)

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December 13, 2019

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January 10, 2020

Speaker: Iuliia Brishtel (Supervisor: Andreas Dengel)

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January 17, 2020

Speaker: Felix Hekele (Graduate School member - Supervisor: Thomas Lachmann)

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January 24, 2020

Speaker: Alexandra Hoffmann (Graduate School member - Supervisors: Thomas Lachmann & Gabriele Bleser)

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January 31, 2020

Speaker: Larissa Leist (Graduate School member - Supervisors: Maria Klatte & Daniela Czernochowski)

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February 07, 2020

Speaker: Maximilian Wolkersdorfer (Graduate School member - Supervisors: Thomas Schmidt & Daniela Czernochowski)

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February 14, 2020

Speaker: Sophia Von Versen (Graduate School member - Supervisors: Maria Klatte & Thomas Lachmann)

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