Fig. 3: Short-latency, pulse-locked responses in M1. | Nature Communications

Fig. 3: Short-latency, pulse-locked responses in M1.

From: Microstimulation of human somatosensory cortex evokes task-dependent, spatially patterned responses in motor cortex

Fig. 3

a Pulse-triggered average of the responses of three motor channels to ICMS at 100 Hz. On a subset of channels, such as these, responses were tightly locked to each pulse with millisecond or even sub-millisecond jitter across pulses. Blue line denotes the response during stimulation, black line the response during baseline (sham stimulation), gray box indicates blanked recording time to eliminate the stimulation artifact. Error bars represent bootstrapped standard error. Scale bar indicates a 10% probability of a spike occurring in a 0.5-ms bin. b Cumulative distribution of the latency of the peak pulse-locked, direct, response. Latencies tended to be shorter than 6 ms. c Pulse-triggered average of the response of a motor channel whose activity increases with stimulation but is not pulse locked. Error bars represent bootstrapped standard error.

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