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Gamma oscillations in the midbrain spatial attention network: linking circuits to function

Sridharan, Devarajan and Knudsen, Eric I (2015) Gamma oscillations in the midbrain spatial attention network: linking circuits to function. In: CURRENT OPINION IN NEUROBIOLOGY, 31 . pp. 189-198.

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Official URL: http://dx.doi.org/10.1016/j.conb.2014.11.006

Abstract

Gamma-band (25-140 Hz) oscillations are ubiquitous in mammalian forebrain structures involved in sensory processing, attention, learning and memory. The optic tectum (01) is the central structure in a midbrain network that participates critically in controlling spatial attention. In this review, we summarize recent advances in characterizing a neural circuit in this midbrain network that generates large amplitude, space-specific, gamma oscillations in the avian OT, both in vivo and in vitro. We describe key physiological and pharmacological mechanisms that produce and regulate the structure of these oscillations. The extensive similarities between midbrain gamma oscillations in birds and those in the neocortex and hippocampus of mammals, offer important insights into the functional significance of a midbrain gamma oscillatory code.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the CURRENT BIOLOGY LTD, 84 THEOBALDS RD, LONDON WC1X 8RR, ENGLAND
Keywords: ENCODING NEURAL ASSEMBLIES; HIPPOCAMPUS IN-VITRO; CHICKS GALLUS-GALLUS; VISUAL-CORTEX; SUPERIOR COLLICULUS; OPTIC TECTUM; NUCLEUS ISTHMI; NEURONAL OSCILLATIONS; TARGET SELECTION; WORKING-MEMORY
Department/Centre: Division of Biological Sciences > Centre for Neuroscience
Depositing User: Id for Latest eprints
Date Deposited: 13 May 2015 07:03
Last Modified: 13 May 2015 07:03
URI: http://eprints.iisc.ac.in/id/eprint/51517

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