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  Investigating pupil-linked arousal to complex and statistically uncertain auditory patterns

Basgol, H., Dayan, P., & Franz, V. (2022). Investigating pupil-linked arousal to complex and statistically uncertain auditory patterns. Poster presented at 64th Conference of Experimental Psychologists (TeaP 2022): Tagung experimentell arbeitender Psycholog:innen, Köln, Germany.

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 Creators:
Basgol, H, Author
Dayan, P1, 2, Author              
Franz, VH, Author              
Affiliations:
1Department of Computational Neuroscience, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_3017468              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: Humans track regularities in the environment and thereby adapt their behavior to changes. Changes offer risk and/or opportunity, therefore mandating arousal, and require internal models of environmental regularities to be either updated or completely reset and replaced with newly learnt alternatives. The locus coeruleus and the norepinephrine system (LC-NE) are thought to regulate such arousal and model updating and replacement in the brain. LC-NE’s effects on pupil dilation responses (PDRs) lead to the latter’s use as biomarkers for arousal and model change. We will measure PDRs to investigate the relationship between uncertainty of auditory patterns, arousal and model change. Generalizing Zhao et al. (2019, Nature Communications), we will generate auditory patterns consisting of pairs of (a) random auditory sequences, (b) regular sequences composed of the same tones, (c) constant tones, and (d) white noise. This allows various environmental changes to be realized (e.g., a switch from a regular pattern to a random pattern for abrupt change, or a switch from a random pattern to a regular pattern for gradual change) so the role of LC-NE in model change can be studied. We will also manipulate the complexity of the auditory patterns by varying the number of tones per sequence to reveal the relationship between pupil-linked arousal and model complexity. So as to tap automatic processes, participants will not be instructed to pay attention to the regularity of the auditory patterns (instead they will be asked to detect a possible gap in the patterns).

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 Dates: 2022-032022
 Publication Status: Published in print
 Pages: -
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Title: 64th Conference of Experimental Psychologists (TeaP 2022): Tagung experimentell arbeitender Psycholog:innen
Place of Event: Köln, Germany
Start-/End Date: 2022-03-20 - 2022-03-23

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Title: 64th Conference of Experimental Psychologists: TeaP 2022
Source Genre: Proceedings
 Creator(s):
Malejka, S, Editor
Barth, M, Editor
Haider, H, Editor
Stahl, C, Editor
Affiliations:
-
Publ. Info: Lengerich, Germany : Pabst
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 383 Identifier: DOI: 10.23668/psycharchives.5677