Different roles of response covariability and its attentional modulation in the sensory cortex and posterior parietal cortex.

ABSTRACT: The covariability of neural responses in the neuron population is highly relevant to the information encoding. Cognitive processes, such as attention, are found to modulate the covariability in the visual cortex to improve information encoding, suggesting the computational advantage of covariability modulation in the neural system. However, is the covariability modulation a general mechanism for enhanced information encoding throughout the information processing pathway, or only adopted in certain processing stages, depending on the property of neural representation? Here, with ultrahigh-field MRI, we examined the covariability, which was estimated by noise correlation, in different attention states in the early visual cortex and posterior parietal cortex (PPC) of the human brain, and its

SUBMITTER: Jiang Y 

PROVIDER: S-EPMC10589615 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature