Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/27693
Appears in Collections:Psychology Journal Articles
Peer Review Status: Refereed
Title: Concurrent Cortical Representations of Function- and Size-Related Object Affordances: An fMRI Study
Author(s): Kourtis, Dimitrios
Vandemaele, Pieter
Vingerhoets, Guy
Keywords: Object affordances
Object size
Object function
Dorsal stream
Posterior parietal cortex
fMRI
Issue Date: 1-Dec-2018
Citation: Kourtis D, Vandemaele P & Vingerhoets G (2018) Concurrent Cortical Representations of Function- and Size-Related Object Affordances: An fMRI Study. Cognitive, Affective, & Behavioral Neuroscience, 18 (6), p. 1221–1232. https://doi.org/10.3758/s13415-018-0633-1.
Abstract: Previous work has shown that the perception of a graspable object may automatically potentiate actions that are tailored to specific action-related features of the object (e.g., its size) and may be related to its immediate grasping as well as to its long-term, functional use. We investigated the neural correlates of function-and size-related object affordances that may be concurrently potentiated by a graspable object. Participants were lying in a MR scanner holding a large switch in one hand and a small switch in the other hand. They passively attended a large or a small object with clearly separated functional and graspable end that was displayed centrally at an average angle of 45 degrees. Participants responded to the direction of an arrow that was overlaid on the object after a mean period of 1,000 ms after object onset and was pointing to the left or to the right with equal probability. Response times were shorter when the arrow pointed to the functional end of the object and when the responses were made with the switch that was congruent to the size of the perceived object. A clear distinction was found in the representation of function-and size-related affordances; the former was represented in the posterior parietal cortex and the latter in prefrontal, premotor, and primary sensorimotor cortices. We conclude that different aspects of object-directed actions may be automatically potentiated by individual object features and are represented in distinct brain areas.
DOI Link: 10.3758/s13415-018-0633-1
Rights: © The Author(s) 2018 This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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