The contingent negative variation and the excitability of the spinal monosynaptic reflex.
A method is described which permits simultaneous measurement of changes in slow electroencephalographic potentials (Contingent Negative Variation-CNV) and the excitability of the spinal monosynaptic arc (H reflex) during the foreperiod of a simple reaction time experiment. Data from 11 normal subjects show that during the development of the CNV there is an augmentation of the amplitude of the H-reflex. It is suggested that the two phenomena are controlled by a common subcortical structure.
D000161:Acoustic Stimulation; D000328:Adult; D003265:Contingent Negative Variation; D004558:Electric Stimulation; D004569:Electroencephalography; D004576:Electromyography; D005071:Evoked Potentials; D005260:Female; D005712:Galvanic Skin Response; D006339:Heart Rate; D006801:Humans; D008297:Male; D009132:Muscles / Q000502:physiology; D011930:Reaction Time; D012023:Reflex, Monosynaptic; D013116:Spinal Cord / Q000502:physiology*; D013979:Tibial Nerve / Q000502:physiology