Key result
Mental concentration and arousal stimuli increased impulse frequency of spontaneously active sympathetic nerve units and initiated firing in previously silent units.
Observational
This physiological study demonstrates that single unit sympathetic nerve activity in human skin responds dynamically to mental and physical arousal stimuli.
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Mental arousal may modulate cutaneous vasomotor tone; leaves open its clinical relevance in autonomic testing.
Hallin et al. (1974) reported an observational. Mental concentration and arousal stimuli vs. Resting conditions was evaluated on Single unit activity in sympathetic nerve fibres. Mental concentration and arousal stimuli increased impulse frequency of spontaneously active sympathetic nerve units and initiated firing in previously silent units.
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