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  Pupil dilation as an implicit measure of appetitive Pavlovian learning

Pietrock, C., Ebrahimi, C., Katthagen, T. M., Koch, S. P., Heinz, A., Rothkirch, M., et al. (2019). Pupil dilation as an implicit measure of appetitive Pavlovian learning. Psychophysiology, e13463. doi:10.1111/psyp.13463.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-917F-A Version Permalink: http://hdl.handle.net/21.11116/0000-0004-D84A-6
Genre: Journal Article

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Pietrock_et_al-2019-Psychophysiology.pdf (Publisher version), 1021KB
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 Creators:
Pietrock, Charlotte1, 2, Author
Ebrahimi, Claudia1, 2, Author
Katthagen, Teresa M. 1, 2, Author
Koch, Stefan P.1, 2, Author
Heinz, Andreas1, 2, 3, 4, Author
Rothkirch, Marcus1, 2, Author
Schlagenhauf, Florian1, 2, 4, 5, Author              
Affiliations:
1Department of Psychiatry and Psychotherapy, Charité University Medicine Berlin, Germany, ou_persistent22              
2Berlin Institute of Health (BIH), Germany, ou_persistent22              
3NeuroCure Cluster of Excellence, Charité University Medicine Berlin, Germany, ou_persistent22              
4Bernstein Center for Computational Neuroscience, Berlin, Germany, ou_persistent22              
5Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634549              

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Free keywords: Associative learning; Attention; Eye-tracking; Pupil dilation; Reward
 Abstract: Appetitive Pavlovian conditioning is a learning mechanism of fundamental biological and pathophysiological significance. Nonetheless, its exploration in humans remains sparse, which is partly attributed to the lack of an established psychophysiological parameter that aptly represents conditioned responding. This study evaluated pupil diameter and other ocular response measures (gaze dwelling time, blink duration and count) as indices of conditioning. Additionally, a learning model was used to infer participants' learning progress on the basis of their pupil dilation. Twenty-nine healthy volunteers completed an appetitive differential delay conditioning paradigm with a primary reward, while the ocular response measures along with other psychophysiological (heart rate, electrodermal activity, postauricular and eyeblink reflex) and behavioral (ratings, contingency awareness) parameters were obtained to examine the relation among different measures. A significantly stronger increase in pupil diameter, longer gaze duration and shorter eyeblink duration was observed in response to the reward-predicting cue compared to the control cue. The Pearce-Hall attention model best predicted the trial-by-trial pupil diameter. This conditioned response was corroborated by a pronounced heart rate deceleration to the reward-predicting cue, while no conditioning effect was observed in the electrodermal activity or startle responses. There was no discernible correlation between the psychophysiological response measures. These results highlight the potential value of ocular response measures as sensitive indices for representing appetitive conditioning.

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Language(s): eng - English
 Dates: 2019-07-202019-04-092019-07-222019-08-19
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1111/psyp.13463
PMID: 31424104
Other: Epub ahead of print
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Project name : Lern- und Gewöhnungsprozesse als Prädiktoren für die Entwicklung und Aufrechterhaltung alkoholbezogener Störungen / FOR 1617
Grant ID : SCHL1969/2‐2 ; SCHL1969/4‐1
Funding program : -
Funding organization : Deutsche Forschungsgemeinschaft (DFG)
Project name : -
Grant ID : -
Funding program : Elsa‐Neumann Scholarship
Funding organization : Humboldt Universität zu Berlin

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Title: Psychophysiology
Source Genre: Journal
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Publ. Info: New York, NY [etc.] : Blackwell Publishing Inc. [etc.]
Pages: - Volume / Issue: - Sequence Number: e13463 Start / End Page: - Identifier: ISSN: 0048-5772
CoNE: https://pure.mpg.de/cone/journals/resource/954925334698