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Synchronized activity in prefrontal cortex during anticipation of visuomotor processing.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Liang, Hualou Ding, Mingzhou |
| Copyright Year | 2002 |
| Abstract | It is commonly presumed, though not well established, that the prefrontal cortex exerts top-down control of sensory processing. One aspect of this control is thought to be a facilitation of sensory pathways in anticipation of such processing. To investigate the possible involvement of prefrontal cortex in anticipatory top-down control, we studied the statistical relations between prefrontal activity, recorded while a macaque monkey waited for presentation of a visual stimulus, and subsequent sensory and motor events. Local field potentials were simultaneously recorded from prefrontal, motor, occipital and temporal cortical sites in the left cerebral hemisphere. Spectral power and coherence analysis revealed that during stimulus anticipation three of five prefrontal sites participated in a coherent oscillatory network synchronized in the beta-frequency range. Pre-stimulus network power and coherence were highly correlated with the amplitude and latency of early visual evoked potential components in visual cortical areas, and with response time. The results suggest that synchronized oscillatory networks in prefrontal cortex are involved in top-down anticipatory mechanisms that facilitate subsequent sensory processing in visual cortex. They further imply that stronger top-down control leads to larger and faster sensory responses, and a subsequently faster motor response. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.ccs.fau.edu/~bressler/pdf/NeuroReport02.pdf |
| Alternate Webpage(s) | http://www.ccs.fau.edu/~ding/neuroreport_2002.pdf |
| Alternate Webpage(s) | http://www.cnbc.cmu.edu/~samondjm/papers/Liangetal2002.pdf |
| Alternate Webpage(s) | http://www.biomed.drexel.edu/labs/liang/publications/NeuroReport02.pdf |
| PubMed reference number | 12438916v1 |
| Volume Number | 13 |
| Issue Number | 16 |
| Journal | Neuroreport |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Area striata structure Cerebral cortex Cerebral hemisphere structure (body structure) Large Left cerebral hemisphere Macaca Prefrontal Cortex Sensory Process Visual evoked cortical potential facilitation physical hard work |
| Content Type | Text |
| Resource Type | Article |
