Gamma and infra-slow oscillations shape neuronal firing in the rat subcortical visual system

Content Provider	Scilit
Author	Chrobok, Lukasz Palus-Chramiec, Katarzyna Jęczmień-Łazur, Jagoda Blasiak, Tomasz Lewandowski, Marian Henryk
Copyright Year	2018
Description	Journal: The Journal of physiology Physiological function of rhythmic firing in the neuronal networks of sensory systems has been linked with information coding. Also, neuronal oscillations in different frequency bands often change as a signature of brain state or sensory processing. Infra‐slow oscillation (ISO) in the neuronal firing dependent on the retinal network has been previously described in the structures of the subcortical visual system. In this paper, we show for the first time that firing of ISO neurons in the lateral geniculate nucleus is also characterised by a harmonic discharge pattern, i.e. action potentials are separated by the intervals governed by fundamental frequency in the gamma range (∼35 Hz). Similar phenomenon was recently described in the suprachiasmatic nuclei of the hypothalamus – the master biological clock. We found, that both gamma and ISO rhythms were synchronised within and between ipsilateral nuclei of the subcortical visual system and were dependent on the retinal activity of the contralateral eye. These oscillatory patterns were differentially influenced by transient and prolonged light stimulation regarding both frequency change direction and sustainability. Our study shows that the firing pattern of neurons in the subcortical visual system is shaped by oscillations from infra‐slow and gamma frequency bands that are plausibly generated by the retinal network. Additionally, results of this study pinpoints that both rhythms are not a distinctive feature of an image nor non‐image forming visual systems but rather constitute two channels carrying distinctive properties of the photic information. This article is protected by copyright. All rights reserved
Related Links	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5983133/pdf
Ending Page	2250
Page Count	22
Starting Page	2229
ISSN	00223751
e-ISSN	14697793
DOI	10.1113/jp275563
Journal	The Journal of physiology
Issue Number	11
Volume Number	596
Language	English
Publisher	Wiley-Blackwell
Publisher Date	2018-04-24
Access Restriction	Open
Subject Keyword	Journal: The Journal of physiology Electrophysiology Infra-slow Oscillation Lateral Geniculate Nucleus Subcortical Visual System
Content Type	Text
Resource Type	Article
Subject	Physiology Sports Science