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  Hysteresis as an implicit prior in tactile spatial decision making

Thiel, S. D., Bitzer, S., Nierhaus, T., Kalberlah, C., Preusser, S., Neumann, J., et al. (2014). Hysteresis as an implicit prior in tactile spatial decision making. PLoS One, 9(2): e89802. doi:10.1371/journal.pone.0089802.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-8182-C Version Permalink: http://hdl.handle.net/21.11116/0000-0003-7CCC-D
Genre: Journal Article

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 Creators:
Thiel, Sabrina D.1, 2, Author              
Bitzer, Sebastian1, Author              
Nierhaus, Till1, 3, Author              
Kalberlah, Christian1, Author              
Preusser, Sven1, Author              
Neumann, Jane1, 4, Author              
Nikulin, Vadim V.5, 6, Author              
van der Meer, Elke2, 3, Author
Villringer, Arno1, 4, Author              
Pleger, Burkhard1, 4, 7, Author              
Affiliations:
1Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634549              
2Department of Cognitive Psychology, Humboldt University Berlin, Germany, ou_persistent22              
3Berlin School of Mind and Brain, Humboldt University Berlin, Germany, ou_persistent22              
4Integrated Research and Treatment Center Adiposity Diseases, University of Leipzig, Germany, ou_persistent22              
5Neurophysics Group, Department of Neurology, Charité University Medicine Berlin, Germany, ou_persistent22              
6Centre for Cognition and Decision Making, National Research University Higher School of Economics, Moscow, Russia, ou_persistent22              
7Clinic for Cognitive Neurology, University of Leipzig, Germany, ou_persistent22              

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 Abstract: Perceptual decisions not only depend on the incoming information from sensory systems but constitute a combination of current sensory evidence and internally accumulated information from past encounters. Although recent evidence emphasizes the fundamental role of prior knowledge for perceptual decision making, only few studies have quantified the relevance of such priors on perceptual decisions and examined their interplay with other decision-relevant factors, such as the stimulus properties. In the present study we asked whether hysteresis, describing the stability of a percept despite a change in stimulus property and known to occur at perceptual thresholds, also acts as a form of an implicit prior in tactile spatial decision making, supporting the stability of a decision across successively presented random stimuli (i.e., decision hysteresis). We applied a variant of the classical 2-point discrimination task and found that hysteresis influenced perceptual decision making: Participants were more likely to decide ‘same’ rather than ‘different’ on successively presented pin distances. In a direct comparison between the influence of applied pin distances (explicit stimulus property) and hysteresis, we found that on average, stimulus property explained significantly more variance of participants’ decisions than hysteresis. However, when focusing on pin distances at threshold, we found a trend for hysteresis to explain more variance. Furthermore, the less variance was explained by the pin distance on a given decision, the more variance was explained by hysteresis, and vice versa. Our findings suggest that hysteresis acts as an implicit prior in tactile spatial decision making that becomes increasingly important when explicit stimulus properties provide decreasing evidence.

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Language(s): eng - English
 Dates: 2013-08-142014-01-272014-02-26
 Publication Status: Published online
 Pages: -
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1371/journal.pone.0089802
PMID: 24587045
PMC: PMC3935932
Other: eCollection 2014
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Title: PLoS One
Source Genre: Journal
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Publ. Info: San Francisco, CA : Public Library of Science
Pages: - Volume / Issue: 9 (2) Sequence Number: e89802 Start / End Page: - Identifier: ISSN: 1932-6203
CoNE: /journals/resource/1000000000277850