[Neurophysiological mechanisms of voluntary attention: a review].
The review is focused on attention as behavior-controlling process. Neurophysiological, electrophysiological and neuropsychological studies of different brain structures during voluntary attention are analyzed. These data show that selective voluntary attention modulates activity of sensory specific cortical zones involved in relevant signal processing. Fronto-thalamic system consisting of prefrontal cortex and thalamic mediodorsal nuclei is shown to be main source of top-down selective modulation of voluntary attention. The review proposed the hypothetical model of selective cortical activity modulation during voluntary attention based upon the available data and evidence of own electroencephalographic studies.
Machinskaia
R I
RI
Institute of Developmental Physiology, Russian Academy of Education, Moscow. develop.physiol@relcom.ru
D000818:Animals; D001288:Attention / Q000502:physiology*; D001921:Brain / Q000033:anatomy & histology / Q000502:physiology*; D004569:Electroencephalography; D000882:Haplorhini; D006801:Humans; D008279:Magnetic Resonance Imaging; D009475:Neurons, Afferent / Q000502:physiology; D009482:Neurophysiology / Q000379:methods*; D010507:Periodicity; D017397:Prefrontal Cortex / Q000502:physiology; D013788:Thalamus / Q000502:physiology; D014793:Visual Cortex / Q000033:anatomy & histology / Q000502:physiology; D014796:Visual Perception / Q000502:physiology