Coherent delta-band oscillations between cortical areas correlate with decision making
Coherent oscillations in the theta-to-gamma frequency range have/nbeen proposed as a mechanism that/ncoordinates neural activity/nin large-scale cortical networks i/nn sensory, motor, and cognitive/ntasks. Whether this mechanism also involves coherent oscillations/nat delta frequencies (1/n–/n4 Hz)...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2013 |
| País: | España |
| Institución: | Universitat Pompeu Fabra |
| Repositorio: | Repositorio Digital de la UPF |
| OAI Identifier: | oai:repositori.upf.edu:10230/23089 |
| Acceso en línea: | http://hdl.handle.net/10230/23089 http://dx.doi.org/10.1073/pnas.1314681110 |
| Access Level: | acceso abierto |
| Palabra clave: | Synchrony Low-frequency rhythm Brain circuits |
| Sumario: | Coherent oscillations in the theta-to-gamma frequency range have/nbeen proposed as a mechanism that/ncoordinates neural activity/nin large-scale cortical networks i/nn sensory, motor, and cognitive/ntasks. Whether this mechanism also involves coherent oscillations/nat delta frequencies (1/n–/n4 Hz) is not known. Rather, delta oscilla-/ntions have been associated with slow-wave sleep. Here, we show/ncoherent oscillations in the delta frequency band between parietal/nand frontal cortices during the decision-making component of a so-/nmatosensory discrimination task. Importantly, the magnitude of/nthis delta-band coherence is modulated by the different decision/nalternatives. Furthermore, during control conditions not requiring/ndecision making, delta-band coherences are typically much reduced./nOur work indicates an important role for synchronous activity in/nthe delta frequency band when large-scale, distant cortical net-/nworks coordinate their neural activity during decision making. |
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