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. 2014 Oct 29;7:40. doi: 10.3389/fneng.2014.00040

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Copyright © 2014 Laxpati, Mahmoudi, Gutekunst, Newman, Zeller-Townson and Gross.

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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Spectral and correlational response to medial septal pulse stimulation demonstrate time-locked and frequency specific responses. Stimulation at 50 mW/mm², 10 ms pulse width, and 7 Hz (A–C), 17 Hz (D–F), and 35 Hz (G–I) each produced unique and frequency-specific responses in the spectrum (A,D,G), spectrogram (B,E,H), and autocorrelation (C,F,I) of the LFP signal time-locked to the stimulation. Blurred edges near stimulus onset and offset are a result of a wide (4 s) moving window that better resolved the frequency-specificity of the response. The autocorrelation demonstrates a highly correlated LFP signal at stimulation time points, suggesting a locking of oscillatory phase to the stimulus.