We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Information Processing in the Primate Basal Ganglia during Sensory-Guided and Internally Driven Rhythmic Tapping.
- Authors
Bartolo, Ramo´n; Prado, Luis; Merchant, Hugo
- Abstract
Gamma (γ) and beta (β) oscillations seem to play complementary functions in the cortico-basal ganglia-thalamo-cortical circuit (CBGT) during motor behavior. We investigated the time-varying changes of the putaminal spiking activity and the spectral power of local field potentials (LFPs) during a task where the rhythmic tapping of monkeys was guided by isochronous stimuli separated by a fixed duration (synchronization phase), followed by a period of internally timed movements (continuation phase). We found that the power of both bands and the discharge rate of cells showed an orderly change in magnitude as a function of the duration and/or the serial order of the intervals executed rhythmically. More LFPs were tuned to duration and/or serial order in the γ- than the β-band, although different values of preferred features were represented by single cells and by both bands. Importantly, in the LFPs tuned to serial order, there was a strong bias toward the continuation phase for the γ-band when aligned to movements, and a bias toward the synchronization phase for the γ-band when aligned to the stimuli. Our results suggest that γ-oscillations reflect local computations associated with stimulus processing, whereas γ-activity involves the entrainment of large putaminal circuits, probably in conjunction with other elements of CBGT, during internally driven rhythmic tapping.
- Subjects
HUMAN information processing; MONKEY behavior; CELL physiology; BASAL ganglia; PRIMATE behavior; PHYSIOLOGY
- Publication
Journal of Neuroscience, 2014, Vol 34, Issue 11, p3910
- ISSN
0270-6474
- Publication type
Article
- DOI
10.1523/JNEUROSCI.2679-13.2014