TY - JOUR
T1 - Coherent delta-band oscillations between cortical areas correlate with decision making
AU - Nácher, Verónica
AU - Ledberg, Anders
AU - Deco, Gustavo
AU - Romo, Ranulfo
PY - 2013/9/10
Y1 - 2013/9/10
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.
AB - 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.
KW - Brain circuits
KW - Low-frequency rhythm
KW - Synchrony
UR - http://www.scopus.com/inward/record.url?scp=84883766200&partnerID=8YFLogxK
U2 - 10.1073/pnas.1314681110
DO - 10.1073/pnas.1314681110
M3 - Article
C2 - 23980180
AN - SCOPUS:84883766200
SN - 0027-8424
VL - 110
SP - 15085
EP - 15090
JO - Proceedings of the National Academy of Sciences of the United States of America
JF - Proceedings of the National Academy of Sciences of the United States of America
IS - 37
ER -