Neural gain control measured through cortical gamma oscillations is associated with sensory sensitivity.

ABSTRACT: Gamma oscillations facilitate information processing by shaping the excitatory input/output of neuronal populations. Recent studies in humans and nonhuman primates have shown that strong excitatory drive to the visual cortex leads to suppression of induced gamma oscillations, which may reflect inhibitory-based gain control of network excitation. The efficiency of the gain control measured through gamma oscillations may in turn affect sensory sensitivity in everyday life. To test this prediction, we assessed the link between self-reported sensitivity and changes in magneto-encephalographic gamma oscillations as a function of motion velocity of high-contrast visual gratings. The induced gamma oscillations increased in frequency and decreased in power with increasing stimulation intensity. As

SUBMITTER: Orekhova EV 

PROVIDER: S-EPMC6865508 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature