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. 2017 Sep 12;11:62. doi: 10.3389/fncir.2017.00062

Figure 4.

Figure 4

The effect of tetracaine injection to the medial septal (MS). (A) An example of a MS-inactivation insensitive site where SuM theta PSD persists throughout the recording. Top to bottom panels: change in HPC and SuM raw LFP, expanded raw LFP segments, RMS, HPC PSD, SuM PSD, HPC-SuM coherence and HPC-SuM theta PPC (B) same as in (A) but with a SuM site that demonstrated sensitivity to MS-inactivation. (C) Theta PSD changes as a result of MS-inactivation across HPC and SuM/MM from all sessions. (D) Raw spectra show data from all recording pairs, with those that showed a statistically significant decrease (red traces) of HPC theta PSD attenuation, those did not (black traces) and those with a statistically significant increase (blue traces) of SuM/MM theta PSD after MS-inactivation. RMS, root mean squared power; PSD, power spectral density; PPC, pair-wise phase consistency; HPC, hippocampus; SuM, supramammillary nucleus; MM, mammillary bodies. **p < 0.01, ***p < 0.001.