Attention to central and peripheral visual space in a movement detection task: an event-related potential and behavioral study. II. Congenitally deaf adults

Letter: Suprastriate hemianopia.

Intravenous regional sympathetic block with guanethidine

Brain plasticity: 'visual' acuity of blind persons via the tongue.

Human somatosensory evoked potentials to mechanical pulses and vibration: contributions of SI and SII somatosensory cortices to P50 and P100 components.

Somatosensory evoked responses: latency differences in blind and sighted persons

The somatosensory evoked response to vibrotactile stimuli was studied in 20 subjects. This type of response to stimuli of 1000 ms duration displays ‘on’ and ‘off’ components. The latter consists of a surface negative deflection of about 100–120 ms peak latency, followed by a slower positive wave. As in the averaged visual evoked response an afteractivity of frequency 8–10 Hz may follow the ‘on’ component. This activity may either mask the ‘off’ component, be initiated by the termination of the stimulus, or its rhythm can be interrupted by the stimulus end.In view of the similarity between the averaged evoked response to visual and vibrotactile stimuli, it is suggested that visual and somatosensory information may be processed according to a common pattern.

Moshe Feinsod

Papers

Somatosensory evoked responses: latency differences in blind and sighted persons

'On' and 'off' components in the human somatosensory evoked response.

A new photostimulator for continuous recording of the visual evoked potential.