The role of the extrastriate body area in action perception
| Autor: | Paul E. Downing, Alison J. Wiggett, Bryn D. Tew, Marius V. Peelen |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Adult
Male Visual perception Adolescent Social Psychology Movement media_common.quotation_subject Motion Perception Development Visual system Stimulus (physiology) Brain mapping Extrastriate body area Behavioral Neuroscience Perception parasitic diseases medicine Humans Visual Pathways Motion perception Visual Cortex media_common Brain Mapping Communication business.industry Visual cortex medicine.anatomical_structure Visual Perception Female business Psychology Neuroscience Photic Stimulation |
| Zdroj: | Social Neuroscience. 1:52-62 |
| ISSN: | 1747-0927 1747-0919 |
| DOI: | 10.1080/17470910600668854 |
| Popis: | Numerous cortical regions respond to aspects of the human form and its actions. What is the contribution of the extrastriate body area (EBA) to this network? In particular, is the EBA involved in constructing a dynamic representation of observed actions? We scanned 16 participants with fMRI while they viewed two kinds of stimulus sequences. In the coherent condition, static frames from a movie of a single, intransitive whole-body action were presented in the correct order. In the incoherent condition, a series of frames from multiple actions (involving one actor) were presented. ROI analyses showed that the EBA, unlike area MT + and the posterior superior temporal sulcus, responded more to the incoherent than to the coherent conditions. Whole brain analyses revealed increased activation to the coherent sequences in parietal and frontal regions that have been implicated in the observation and control of movement. We suggest that the EBA response adapts when succeeding images depict relatively similar postures (coherent condition) compared to relatively different postures (incoherent condition). We propose that the EBA plays a unique role in the perception of action, by representing the static structure, rather than dynamic aspects, of the human form. |
| Databáze: | OpenAIRE |
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