Corticospinal excitability in human sleep as assessed by transcranial magnetic stimulation.
basic_science · Level V
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Abstract
The excitability of the corticospinal system was studied in 23 healthy subjects in sleep stages NREM2, NREM4, REM, and wakefulness using transcranial magnetic stimulation. Assessment of motor thresholds, stimulus-response curves, and latencies of motor evoked potentials shows activation of the fast-conducting corticospinal fibers in all sleep stages and a neuronal recruitment pattern similar to wakefulness, however, at a lower level of excitability and with significant differences between sleep stages.
Medical subject headings
- Cerebral Cortex
- Magnetoencephalography
- Sleep
- Spinal Cord