Higher anticipated force required a stronger inhibitory process in go/nogo tasks
| Autor: | Kosuke Akatsuka, Tetsuo Kida, Koji Inui, Yohei Tamura, Toshiaki Wasaka, Ryusuke Kakigi, Hiroki Nakata |
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| Rok vydání: | 2006 |
| Předmět: |
Adult
Male medicine.medical_treatment Stimulation Stimulus (physiology) Inhibitory postsynaptic potential Somatosensory system Event-related potential Physiology (medical) medicine Humans Muscle Skeletal Evoked Potentials Brain Evoked Potentials Motor Transcranial Magnetic Stimulation Electric Stimulation Sensory Systems Transcranial magnetic stimulation Electrophysiology Acoustic Stimulation Neurology Female Neurology (clinical) medicine.symptom Psychology Neuroscience Psychomotor Performance psychological phenomena and processes Muscle Contraction Muscle contraction |
| Zdroj: | Clinical Neurophysiology. 117:1669-1676 |
| ISSN: | 1388-2457 |
| DOI: | 10.1016/j.clinph.2006.03.032 |
| Popis: | Objective We investigated the effect of the inhibitory process with increasing muscle force on event-related potentials (ERPs) and motor evoked potentials (MEPs). Methods The subjects performed a S1–S2 paradigm with go/nogo tasks. S1 was an auditory tone burst, and S2 was an electrical stimulation applied to the second (go stimuli) or fifth digit (nogo stimuli) of the left hand. The recordings were conducted at 3 force levels; 10, 30 and 50% maximal voluntary contraction (MVC). After the presentation of S2, the subjects were instructed to adjust their force level to match the target line with a force trajectory line in only the go trials. Results Nogo-N140 was significantly more negative in amplitude than go-N140 in all conditions, and became larger with increasing muscle force. The MEP, which was recorded at 150 ms after S2, became significantly smaller with increasing muscle force in nogo trials, whereas it became larger in go trials. Conclusions Our results indicated that stronger inhibitory cerebral activity was needed for a nogo stimulus, in the case where a stronger response was needed for a go stimulus. Significance The present study showed a significant relationship between cortical inhibitory process and muscle force. |
| Databáze: | OpenAIRE |
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