1. Performance- and stimulus-dependent oscillations in monkey prefrontal cortex during short-term memory
- Author
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Gordon Pipa, Ellen S Staedtler, Eugenio F Rodriguez, James A Waltz, Lars Muckli, Wolf Singer, Rainer Goebel, Matthias H J Munk, Cognitive Neuroscience, RS: FPN CN I, and Costa, Rui M.
- Subjects
visual short-term memory ,prefrontal cortex ,local field potential ,behavioral performance ,Synaptic integration ,Cognitive Neuroscience ,Short-term memory ,Local field potential ,Stimulus (physiology) ,Spatial memory ,lcsh:RC346-429 ,Sensory Systems ,lcsh:RC321-571 ,Cellular and Molecular Neuroscience ,ddc:590 ,Visual memory ,stimulus coding ,Visual short-term memory ,Psychology ,Prefrontal cortex ,lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry ,Neuroscience ,lcsh:Neurology. Diseases of the nervous system ,Original Research - Abstract
Short-term memory requires the coordination of sub-processes like encoding, retention, retrieval and comparison of stored material to subsequent input. Neuronal oscillations have an inherent time structure, can effectively coordinate synaptic integration of large neuron populations and could therefore organize and integrate distributed sub-processes in time and space. We observed field potential oscillations (14–95 Hz) in ventral prefrontal cortex of monkeys performing a visual memory task. Stimulus-selective and performance-dependent oscillations occurred simultaneously at 65–95 Hz and 14–50 Hz, the latter being phase-locked throughout memory maintenance. We propose that prefrontal oscillatory activity may be instrumental for the dynamical integration of local and global neuronal processes underlying short-term memory.
- Published
- 2009