In:
eLife, eLife Sciences Publications, Ltd, Vol. 7 ( 2018-02-26)
Kurzfassung:
Cortical gamma oscillations have been implicated in a variety of cognitive, behavioral, and circuit-level phenomena. However, the circuit mechanisms of gamma-band generation and synchronization across cortical space remain uncertain. Using optogenetic patterned illumination in acute brain slices of mouse visual cortex, we define a circuit composed of layer 2/3 (L2/3) pyramidal cells and somatostatin (SOM) interneurons that phase-locks ensembles across the retinotopic map. The network oscillations generated here emerge from non-periodic stimuli, and are stimulus size-dependent, coherent across cortical space, narrow band (30 Hz), and depend on SOM neuron but not parvalbumin (PV) neuron activity; similar to visually induced gamma oscillations observed in vivo. Gamma oscillations generated in separate cortical locations exhibited high coherence as far apart as 850 μm, and lateral gamma entrainment depended on SOM neuron activity. These data identify a circuit that is sufficient to mediate long-range gamma-band coherence in the primary visual cortex.
Materialart:
Online-Ressource
ISSN:
2050-084X
DOI:
10.7554/eLife.28569.001
DOI:
10.7554/eLife.28569.002
DOI:
10.7554/eLife.28569.003
DOI:
10.7554/eLife.28569.004
DOI:
10.7554/eLife.28569.005
DOI:
10.7554/eLife.28569.006
DOI:
10.7554/eLife.28569.007
DOI:
10.7554/eLife.28569.008
DOI:
10.7554/eLife.28569.009
DOI:
10.7554/eLife.28569.010
DOI:
10.7554/eLife.28569.011
DOI:
10.7554/eLife.28569.012
DOI:
10.7554/eLife.28569.014
DOI:
10.7554/eLife.28569.015
Sprache:
Englisch
Verlag:
eLife Sciences Publications, Ltd
Publikationsdatum:
2018
ZDB Id:
2687154-3