Fig 6. Phase preference of phase-locked cells.

A: Human Data (Data segment 2). B: PING Network Data. C: ING Network Data. D: CHING Network Data. The preferred phases of each phase-locked cell are displayed in polar graph representation. Note that, since phases were calculated from −π to π (see Spike-LFP phase-locking in Materials and methods Section), these polar graphs should be interpreted clockwise with time. The vector size gives a measure of the phase distribution of each cell. Big amplitude vectors indicate very concentrated distributions while small amplitude vectors indicate less concentrated ones (see S3 Fig). The color of each vector encodes the type of the cell of whom it represents the phase: red (FS), dark red (FS2), green (RS) and dark green (Ch). Cell number IDs are indicated. Dark colored vectors indicate the average phase among each neuron type and Δθ the phase difference among them. Data segment 2 presented 43 minutes of recordings, containing 14 seconds of Gamma activity.