Short and long latency reflex responses elicited by electrical and mechanical stimulation in human hand muscle
Corresponding Author
I. M. TARKKA
Department of Health Sciences, University of Jyväskylä, University Central Hospital of Helsinki, Finland
Department of Health Sciences, University of Jyväskylä, SF-40100 Jyvaskyla, Finland.Search for more papers by this authorT. A. LARSEN
Department of Clinical Neurophysiology, University Central Hospital of Helsinki, Finland
Search for more papers by this authorCorresponding Author
I. M. TARKKA
Department of Health Sciences, University of Jyväskylä, University Central Hospital of Helsinki, Finland
Department of Health Sciences, University of Jyväskylä, SF-40100 Jyvaskyla, Finland.Search for more papers by this authorT. A. LARSEN
Department of Clinical Neurophysiology, University Central Hospital of Helsinki, Finland
Search for more papers by this authorAbstract
The relationship between electrically and mechanically induced reflex responses in the rectified, averaged surface electromyogram of the first interosseus dorsalis muscle was examined in 18 healthy human subjects. Both methods evoked identifiable short and long latency reflex responses. The onset latencies for short latency reflexes with electrical and mechanical stimulations were 30.6 ms (± 2.2 ms) and 28.9 ms (± 2.2 ms) and for long latency reflexes 50.0 ms(± 2.8 ms) and 51.2 ms (± 5.2 ms), respectively. The correlation of the onset latencies of the reflexes revealed significant correspondence between the electrical and mechanical methods implying at least partly mutual mechanisms.
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