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Continuous Stimulation Reduces Arousal Level: Stability of the Effect over Time

Yvonne Brackbill
Child Development
Vol. 44, No. 1 (Mar., 1973), pp. 43-46
Published by: Wiley on behalf of the Society for Research in Child Development
DOI: 10.2307/1127677
Stable URL: http://www.jstor.org/stable/1127677
Page Count: 4
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Continuous Stimulation Reduces Arousal Level: Stability of the Effect over Time
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Abstract

This study sought to determine whether the effect of continuous stimulation on arousal level persists over relatively long periods of time and whether its manifestations change over time, for example, as in homeostatic adjustment. 16 1-month-old infants served as subjects during 2-hour experimental and control sessions. The experimental condition provided extra stimulation of a continuous character in 4 sensory modalities. Measures of arousal level included heart rate, respiration regularity, motor activity, and state. The results show that continuous stimulation reduced arousal level both behaviorally and physiologically, that this effect occurred quite rapidly, and that it endured relatively unchanged over time.

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