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. 2017 Sep 14;11:64. doi: 10.3389/fncir.2017.00064

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Copyright © 2017 Yague, Tsunematsu and Sakata.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Example simultaneous recording and cortical states during the period of spontaneous activity under anesthetized and unanesthetized conditions. (A) Simultaneous recording from the auditory cortex (AC) and basal forebrain (BF) under anesthetized (top) and unanesthetized conditions (bottom), with displaying local field potentials (LFPs) and single-unit activities (SUAs) in both areas. (B) Normalized (Z scored) power spectral density from spontaneous LFPs in the AC for each experimental condition (N_anesthetized = 8; N_{unanesthetized} = 15). Error indicates SEM. (C) Effect size of difference in power spectral density in (B). As expected, the unanesthetized condition was characterized by smaller delta (≤4 Hz) and larger theta (6–10 Hz) components compared to those in the anesthetized condition, indicating that two experimental conditions represent different brain states.