Changes in cortical field potentials during learning processes of go/no-go reaction time hand movement with tone discrimination in the monkey

Gemba, Hisae

doi:10.1016/0304-3940(93)90788-m

Cited by 5 publications

(1 citation statement)

References 16 publications

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“…This is consistent with the present study, which showed an activation pattern in the superior tempo ral gyrus different from that in the left transverse temporal gyrus. By recording cortical field poten tials during go/no-go reaction time hand movements with tone discrimination in the monkey, Gemba (1993) suggested that the superior temporal gyrus may process auditory information before the dis crimination in the prefrontal cortex. Corticocortical afferents from the prefrontal cortex to SMA seem to be important in giving rise to responses to auditory signals (Kurata and Tanji, 1985).…”

Section: Discussionmentioning

confidence: 99%

Frequency-Dependent Changes of Regional Cerebral Blood Flow during Finger Movements

Sadato

Ibáñez

Deiber

et al. 1996

J Cereb Blood Flow Metab

221

111

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To study the effect of the repetition rate of a simple movement on the distribution and magnitude of neuronal recruitment, we measured regional CBF (rCBF) in eight normal volunteers, using positron emission tomography and 15O-labeled water. An auditory-cued, repetitive flexion movement of the right index finger against the thumb was performed at very slow (0.25 and 0.5 Hz), slow (0.75 and 1 Hz), fast (2 and 2.5 Hz), and very fast (3 and 4 Hz) rates. The increase of rCBF during movement relative to the resting condition was calculated for each pair of movement conditions. Left primary sensorimotor cortex showed no significant activation at the very slow rates. There was a rapid rise of rCBF between the slow and the fast rates, but no further increase at the very fast rates. The right cerebellum showed similar changes. Changes in the left primary sensorimotor cortex and the cerebellum likely reflect the effect of the movement rate. The posterior supplementary motor area (SMA) showed its highest activation at the very slow rates but no significant activation at the very fast rates. Changes correlating with those in the SMA were found in the anterior cingulate gyrus, right prefrontal area, and right thalamus. The decreases in CBF may reflect a progressive change in performance from reactive to predictive.

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Section: Discussionmentioning

confidence: 99%