Response-locked changes in auto- and cross-covariations in parietal cortex

Action potentials from small groups of physically adjacent neurons were rec orded from the parietal cortex of two rhesus macaques performing a memory s accade task. Recordings were made using tetrodes and sorted into spike trai ns from individual cells. Auto- and crosscovariograms of spike times for in dividual cells and simultaneously recorded. pairs of cells, respectively, s how modulations synchronized with behavioral events consistent with visual, memory, and perisaccadic activity. (C) 1999 Elsevier Science B.V. All righ ts reserved.