Figure 1
From: The relationship between magnetic and electrophysiological responses to complex tactile stimuli
An example of a somatosensory MEG response. Simultaneous stimulation of right D1 and D2 evoked responses in the left hemisphere. The response waveforms at three stimulation rates are shown. From top to bottom, the interstimulus intervals (ISIs) were 2s, 1s and 0.33s. The filter range was 1–100 Hz. Each curve shows one channel's time course. The first response peak appeared at 19 ms (arrow). While the latency of this peak did not change across ISIs, the amplitude decreased with increasing stimulation rate.