Dynamics of striate cortical activity in the alert macaque: I. Incidence and stimulus-dependence of gamma-band neuronal oscillations
S Friedman-Hill, PE Maldonado, CM Gray - Cerebral cortex, 2000 - academic.oup.com
Using single and multiunit recordings in the striate cortex of alert macaque monkeys, we find
that gamma-band (20–70 Hz) oscillations in neuronal firing are a prominent feature of V1
neuronal activity. The properties of this rhythmic activity are very similar to those previously
observed in the cat. Gamma-band activity is strongly dependent on visual stimulation,
largely absent during spontaneous activity and, under the conditions of our experiment, not
time-locked to the vertical refresh of the computer monitor (80 Hz) used to present the …
that gamma-band (20–70 Hz) oscillations in neuronal firing are a prominent feature of V1
neuronal activity. The properties of this rhythmic activity are very similar to those previously
observed in the cat. Gamma-band activity is strongly dependent on visual stimulation,
largely absent during spontaneous activity and, under the conditions of our experiment, not
time-locked to the vertical refresh of the computer monitor (80 Hz) used to present the …
Dynamics of striate cortical activity in the alert macaque: II. Fast time scale synchronization
PE Maldonado, S Friedman-Hill, CM Gray - Cerebral Cortex, 2000 - academic.oup.com
Synchronous neuronal activity with millisecond precision has been postulated to contribute
to the process of visual perceptual grouping. We have performed multineuron recordings in
striate cortex of two alert macaque monkeys to determine if the occurrence and properties of
this form of activity are consistent with the minimal requirements of this theory. We find that
neuronal synchronization with millisecond precision is a prevalent and robust feature of
stimulus-evoked activity in striate cortex. It occurs among adjacent cells recorded by the …
to the process of visual perceptual grouping. We have performed multineuron recordings in
striate cortex of two alert macaque monkeys to determine if the occurrence and properties of
this form of activity are consistent with the minimal requirements of this theory. We find that
neuronal synchronization with millisecond precision is a prevalent and robust feature of
stimulus-evoked activity in striate cortex. It occurs among adjacent cells recorded by the …
