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. 2012 Jan 25;6:1. doi: 10.3389/fncir.2012.00001

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Copyright © 2012 Martin, Houitte, Guillermier, Petit, Bonvento and Gurden.

This is an open-access article distributed under the terms of the Creative Commons Attribution Non Commercial License, which permits non-commercial use, distribution, and reproduction in other forums, provided the original authors and source are credited.

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Gamma activity recorded during spontaneous activity in the olfactory bulb of GLAST^+/+ and GLAST^-/- mice. (A) Gamma bursts are present on each respiratory cycle, both in a GLAST^+/+ mouse (left) and a GLAST^-/- mouse (right) as displayed on representative local field potential recording examples. Top: raw signals 0.3–300 Hz; bottom: filtered signals 60–160 Hz. (B) Shift of gamma bursts frequency in GLAST^-/- mice. The signal is represented as a time (x-axis)–frequency (y-axis) decomposition between 10 and 160 Hz. The color scale represents signal power (μV²). (C). Normalized average power spectra (60–160 Hz) during spontaneous activity in GLAST^+/+ (n = 6) and GLAST^-/- (n = 6) mice. Frequency and power of gamma oscillations are significantly reduced in GLAST^-/- compared to controls. (D) Peaks values averaged for the population [GLAST^+/+ (n = 6); GLAST^-/- (n = 6)] confirm the frequency shift and power decrease in GLAST^-/- animals. **p < 0.001.