Studies of selective attention in dogs using the coherence-phase characteristics of cortical potentials over a wide range of frequencies, 1-220 Hz.
The state of selective attention formed during operant food-related behavior was studied using the coherence-phase characteristics between potentials in several areas of the neocortex at frequencies of 1-220 Hz. Functional groups were identified among the areas compared, which appear to have priority for this state. The temporal relationships between potentials in these groups were established from values for coherence functions at a particular optimum level (0.7) mainly in the band 1-15 Hz and the high-frequency range 40-200 Hz. The phenomenon of synchronicity appeared at phase shifts close to zero, while at significant phase shifts the phenomenon of non-synchronous time relationships with defined spatial directions was seen in the high-frequency range.
Dumenko
V N
VN
Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow. VDumenko@Yandex.Ru
Kozlov
M K
MK
D000818:Animals; D001288:Attention / Q000502:physiology*; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000502:physiology*; D003216:Conditioning, Operant / Q000502:physiology; D003344:Cortical Synchronization; D004285:Dogs; D004567:Electrodes, Implanted; D004569:Electroencephalography; D005071:Evoked Potentials / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology; D012815:Signal Processing, Computer-Assisted