High frequency visual stimulation primes gamma oscillations for visually-evoked phase reset and enhances spatial acuity
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Abstract
The temporal frequency of sensory stimulation is a decisive factor in the bidirectional plasticity of perceptual detection thresholds. However, surprisingly little is known about how distinct temporal parameters of sensory input differentially impact neuronal, circuit, and perceptual function. Here we demonstrate that brief repetitive visual stimulation is sufficient to induce long-term plasticity of visual responses, with the temporal frequency of the visual stimulus determining the location and generalization of visual response plasticity. Brief repetitive low frequency stimulation (LFS, 2 Hz) is sufficient to induce a visual response potentiation that is exclusively expressed in layer 4 in response to the familiar stimulus. In contrast, brief, repetitive high frequency stimulation (HFS, 20 Hz) suppresses the activity of fast-spiking interneurons and primes ongoing gamma oscillatory rhythms for visually-evoked phase reset. Accordingly, visual stimulation subsequent to HFS induces non-stimulus specific visual response plasticity that is expressed in all cortical layers. The generalized visual response enhancement induced by HFS is paralleled by an increase in visual acuity measured by improved performance in a visual detection task.Keywords
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- Published version: Cerebral Cortex Communications, 2 (2), tgab016.
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