Fig. 7
From: Population coding of conditional probability distributions in dorsal premotor cortex
M1 does not reflect the probability of upcoming movements. a–d PSTHs and GLM results for M1 neurons. Columns have the same schematics as Fig. 3. First row of PSTHs: Normalized averages of reach neurons, defined as those neurons significant for movement during the late period, but not position in the early period of the GLM. This was the same criteria as for SR neurons in PMd. Second row: Normalized averages of reach & position neurons, defined as those neurons significant for movement during the late period, and position in the early period of the GLM. This was the same criteria as for PR neurons in PMd. Note that we did not use the same “SR/PR” nomenclature as PMd, because there was no evidence in the PSTHs of M1 neurons that position was used to represent potential upcoming movements. e Same schematic as Fig. 4a, but for M1 reach & position neurons. Left: The normalized average firing rate, as a function of time and relative angular position. Activity is averaged across all reach & position neurons. Right: The normalized average firing rate in the 100 ms prior to target onset, plotted as a function of the relative angular hand position
