TY  - JOUR
PY  - 2013//
TI  - Coherent delta-band oscillations between cortical areas correlate with decision making
JO  - Proceedings of the National Academy of Sciences of the United States of America
A1  - Nácher, Verónica
A1  - Ledberg, Anders
A1  - Deco, Gustavo
A1  - Romo, Ranulfo
SP  - 15085
EP  - 15090
VL  - 110
IS  - 37
N2  - Coherent oscillations in the theta-to-gamma frequency range have been proposed as a mechanism that coordinates neural activity in large-scale cortical networks in sensory, motor, and cognitive tasks. Whether this mechanism also involves coherent oscillations at delta frequencies (1-4 Hz) is not known. Rather, delta oscillations have been associated with slow-wave sleep. Here, we show coherent oscillations in the delta frequency band between parietal and frontal cortices during the decision-making component of a somatosensory discrimination task. Importantly, the magnitude of this delta-band coherence is modulated by the different decision alternatives. Furthermore, during control conditions not requiring decision making, delta-band coherences are typically much reduced. Our work indicates an important role for synchronous activity in the delta frequency band when large-scale, distant cortical networks coordinate their neural activity during decision making.<p />  <p>Language: en</p>
LA  - en
SN  - 0027-8424
UR  - http://dx.doi.org/10.1073/pnas.1314681110
ID  - ref1
ER  -