Fig. 3: Analysis of single-neuron activity from microelectrode recordings.

A A 5-second example trace illustrates a neuron firing in an irregular pattern. The panel beneath displays the log interspike interval of the spiketrain, with a double Gaussian exponential fit applied to quantify the neuron’s firing patterns. B Four example traces represent neurons oscillating within the theta, alpha, low beta, and high beta frequency ranges over a 1-s duration. For each frequency, the corresponding spiketrain autocorrelation functions span a half-second lag. The Lomb-Scargle periodogram of the autocorrelation function is also provided, helping to quantify the strength of the neuronal oscillation. C An example trace demonstrates a neuron exhibiting strong low beta oscillations. Below this, the downsampled binary sequence of the spiketrain is displayed as a gray trace. The green wave represents the low beta filtered binary sequence, and the black trace illustrates the Hilbert-transformed waveform of the beta power amplitude. The horizontal orange line indicates the burst duration threshold, while the red boxes pinpoint detected bursts.