Experience-dependent emergence of beta and gamma band oscillations in the primary visual cortex during the critical period.

Sci Rep

State Key Laboratory of Cognitive Neuroscience &Learning, IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing 100875, China.

Published: December 2015

Neural oscillatory activities have been shown to play important roles in neural information processing and the shaping of circuit connections during development. However, it remains unknown whether and how specific neural oscillations emerge during a postnatal critical period (CP), in which neuronal connections are most substantially modified by neural activity and experience. By recording local field potentials (LFPs) and single unit activity in developing primary visual cortex (V1) of head-fixed awake mice, we here demonstrate an emergence of characteristic oscillatory activities during the CP. From the pre-CP to CP, the peak frequency of spontaneous fast oscillatory activities shifts from the beta band (15-35 Hz) to the gamma band (40-70 Hz), accompanied by a decrease of cross-frequency coupling (CFC) and broadband spike-field coherence (SFC). Moreover, visual stimulation induced a large increase of beta-band activity but a reduction of gamma-band activity specifically from the CP onwards. Dark rearing of animals from the birth delayed this emergence of oscillatory activities during the CP, suggesting its dependence on early visual experience. These findings suggest that the characteristic neuronal oscillatory activities emerged specifically during the CP may represent as neural activity trait markers for the experience-dependent maturation of developing visual cortical circuits.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4673459PMC
http://dx.doi.org/10.1038/srep17847DOI Listing

Publication Analysis

Top Keywords

oscillatory activities
20
gamma band
8
primary visual
8
visual cortex
8
critical period
8
neural activity
8
visual
5
neural
5
oscillatory
5
activities
5

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!