NDLI: Visual training paired with electrical stimulation of the basal forebrain improves orientation-selective visual acuity in the rat

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Visual training paired with electrical stimulation of the basal forebrain improves orientation-selective visual acuity in the rat

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Visual training paired with electrical stimulation of the basal forebrain improves orientation-selective visual acuity in the rat

Content Provider	Springer Nature Link
Author	Kang, Jun Il Groleau, Marianne Dotigny, Florence Giguère, Hugo Vaucher, Elvire
Copyright Year	2013
Abstract	The cholinergic afferents from the basal forebrain to the primary visual cortex play a key role in visual attention and cortical plasticity. These afferent fibers modulate acute and long-term responses of visual neurons to specific stimuli. The present study evaluates whether this cholinergic modulation of visual neurons results in cortical activity and visual perception changes. Awake adult rats were exposed repeatedly for 2 weeks to an orientation-specific grating with or without coupling this visual stimulation to an electrical stimulation of the basal forebrain. The visual acuity, as measured using a visual water maze before and after the exposure to the orientation-specific grating, was increased in the group of trained rats with simultaneous basal forebrain/visual stimulation. The increase in visual acuity was not observed when visual training or basal forebrain stimulation was performed separately or when cholinergic fibers were selectively lesioned prior to the visual stimulation. The visual evoked potentials show a long-lasting increase in cortical reactivity of the primary visual cortex after coupled visual/cholinergic stimulation, as well as c-Fos immunoreactivity of both pyramidal and GABAergic interneuron. These findings demonstrate that when coupled with visual training, the cholinergic system improves visual performance for the trained orientation probably through enhancement of attentional processes and cortical plasticity in V1 related to the ratio of excitatory/inhibitory inputs. This study opens the possibility of establishing efficient rehabilitation strategies for facilitating visual capacity.
Starting Page	1493
Ending Page	1507
Page Count	15
File Format	PDF
ISSN	18632653
Journal	Anatomy and Embryology
Volume Number	219
Issue Number	4
e-ISSN	18632661
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-05-23
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Acetylcholine Attention Cholinergic system Cortical plasticity Perceptual learning Neurosciences Cell Biology Neurology
Content Type	Text
Resource Type	Article
Subject	Neuroscience Anatomy Histology

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Visual training paired with electrical stimulation of the basal forebrain improves orientation-selective visual acuity in the rat

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