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How embodied is perceptual decision making? Evidence for separate processing of perceptual and motor decisions.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Filimon, Flavia Philiastides, Marios G. Nelson, Jonathan D. Kloosterman, Niels A. Heekeren, H. R. Van |
| Copyright Year | 2013 |
| Abstract | The extent to which different cognitive processes are "embodied" is widely debated. Previous studies have implicated sensorimotor regions such as lateral intraparietal (LIP) area in perceptual decision making. This has led to the view that perceptual decisions are embodied in the same sensorimotor networks that guide body movements. We use event-related fMRI and effective connectivity analysis to investigate whether the human sensorimotor system implements perceptual decisions. We show that when eye and hand motor preparation is disentangled from perceptual decisions, sensorimotor areas are not involved in accumulating sensory evidence toward a perceptual decision. Instead, inferior frontal cortex increases its effective connectivity with sensory regions representing the evidence, is modulated by the amount of evidence, and shows greater task-positive BOLD responses during the perceptual decision stage. Once eye movement planning can begin, however, an intraparietal sulcus (IPS) area, putative LIP, participates in motor decisions. Moreover, sensory evidence levels modulate decision and motor preparation stages differently in different IPS regions, suggesting functional heterogeneity of the IPS. This suggests that different systems implement perceptual versus motor decisions, using different neural signatures. |
| Starting Page | 349 |
| Ending Page | 355 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://eprints.gla.ac.uk/82527/1/82527.pdf |
| Alternate Webpage(s) | http://www.jneurosci.org/content/jneuro/33/5/2121.full.pdf |
| Alternate Webpage(s) | http://www.jonathandnelson.com/papers/2013filimonHowEmbodied.pdf |
| PubMed reference number | 23365248v1 |
| Alternate Webpage(s) | https://doi.org/10.1523/JNEUROSCI.2334-12.2013 |
| DOI | 10.1523/jneurosci.2334-12.2013 |
| Journal | The Journal of neuroscience : the official journal of the Society for Neuroscience |
| Volume Number | 33 |
| Issue Number | 5 |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | CNS disorder Cerebral cortex Decision Making Eye Movements Hypothalamic Area, Lateral Movement Sensorimotor Cortex Structure of intraparietal sulcus dinoflagellate sulcus fMRI |
| Content Type | Text |
| Resource Type | Article |
