AUTHOR=Pipa Gordon , Staedtler Ellen S., Rodriguez Eugenio F., Waltz James A., Muckli Lars , Singer Wolf , Goebel Rainer , Munk Matthias H. TITLE=Performance- and stimulus-dependent oscillations in monkey prefrontal cortex during short-term memory JOURNAL=Frontiers in Integrative Neuroscience VOLUME=3 YEAR=2009 URL=https://www.frontiersin.org/journals/integrative-neuroscience/articles/10.3389/neuro.07.025.2009 DOI=10.3389/neuro.07.025.2009 ISSN=1662-5145 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.