Chunk #14 — Materials and Methods — Data analysis — Gamma power estimation

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Low and High Gamma Oscillations in Rat Ventral Striatum have Distinct Relationships to Behavior, Reward, and Spiking Activity on a Learned Spatial Decision Task.

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spectral estimation), known as Slepians (Mitra and Bokil, 2008; Percival and Walden, 1993). We used the Chronux mtspecgramc function for MATLAB, with the following parameters: window size, 0.5 s; time step, 50 ms; five tapers; bandwidth 6 Hz. From the resulting spectrogram, power in the 45–55 Hz frequency range was averaged to obtain a “gamma-50” time series which could then be analyzed as a function of time and spatial location. Average power in the 70–85 Hz range was used for “gamma-80”.