Enhanced Extrastriate Activation during Observation of Distorted Finger Postures
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© 2003 MIT Press - Journals. This is the accepted version of the following article: Avikainen, Sari & Liuhanen, Sasu & Schürmann, Martin & Hari, Riitta. 2003. Enhanced Extrastriate Activation during Observation of Distorted Finger Postures. Journal of Cognitive Neuroscience. Volume 15, Issue 5. 658-663. ISSN 0898-929X (printed). DOI: 10.1162/jocn.2003.15.5.658, which has been published in final form at http://www.mitpressjournals.org/doi/abs/10.1162/jocn.2003.15.5.658#.VksDdkaBtIY.
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2003
Major/Subject
Mcode
Degree programme
Language
en
Pages
658-663
Series
Journal of Cognitive Neuroscience, Volume 15, Issue 5
Abstract
Hand and finger postures of other people are important body language cues that strongly contribute to the observer's decision about the person's intentions, thoughts, and attentional state. We compared neuromagnetic cortical activation elicited by color images of natural and distorted finger postures. The distorted postures contained computer-deformed joint angles and thereby easily caught the observer's attention. From about 260 msec onwards, extrastriate occipital areas of both hemispheres were activated more strongly by distorted than natural finger postures. We interpret this result as an early topdown effect of emotional valence on the processing of unusual hand shapes in the extrastriate visual cortex.Description
Keywords
hand postures, finger postures, body language, intentions, thoughts, neuromagnetic cortical activation, color images
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Citation
Avikainen, Sari & Liuhanen, Sasu & Schürmann, Martin & Hari, Riitta. 2003. Enhanced Extrastriate Activation during Observation of Distorted Finger Postures. Journal of Cognitive Neuroscience. Volume 15, Issue 5. 658-663. ISSN 0898-929X (printed). DOI: 10.1162/jocn.2003.15.5.658.