Abstract
We studied cerebral evoked potentials on the scalp to the stimulation of the right hand from a change in weight of 400-480 g in ten subjects. Rise-time was 20g/10 ms, Inter Stimulus Interval 2s and stimulus duration was 100 ms. The cerebral activations were a double positive contralateral C3'/P70, P190, and a single negative frontal Fz/N70 component. We conclude that a brisk change of a hand held load elicits a significant evoked potential (EP) unlike the electrical somato-sensory EP (SEP). The stimulus is perceived as applied force. For this reason we call it a proprioceptive EP (PEP). Further studies of the PEP are needed to assess the influence of load manipulations and of muscle contraction and to explore the effect of attentional manipulation.
| Original language | English |
|---|---|
| Journal | Neuroscience Letters |
| Volume | 288 |
| Issue number | 2 |
| Pages (from-to) | 111-4 |
| Number of pages | 4 |
| ISSN | 0304-3940 |
| Publication status | Published - 14 Jul 2000 |
Keywords
- Adult
- Brain/physiology
- Efferent Pathways/physiology
- Electromyography
- Evoked Potentials, Somatosensory/physiology
- Hand/physiology
- Humans
- Male
- Motor Cortex/physiology
- Proprioception/physiology
- Reaction Time/physiology
- Weight-Bearing/physiology