Neonatal Movement Response Decrement and Recovery to Sounds as a Function of Stimulus Intensity

Response decrement, novelty response, and dishabituation of body movements to repeated presentations of a white noise stimulus of 66, 76, and 86 dB were studied in 89, 2-3-day-olds in the first epoch of active-quiet sleep following a feeding. Newborns receiving the 86 dB repeating stimulus had great...

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Bibliographic Details
Published in:Canadian Journal of Experimental Psychology 1993-12, Vol.47 (4), p.639-656
Main Authors: KISILEVSKY, BARBARA S, MUIR, DARWIN W
Format: Article
Language:English
Subjects:
Acoustic Stimulation
Attention
Auditory Stimulation
Babies
Biological and medical sciences
Body movement
Child development
Developmental psychology
Factors
Female
Fundamental and applied biological sciences. Psychology
Habituation
Habituation, Psychophysiologic
Human
Humans
Infant, Newborn - psychology
Intensity
Loudness Perception
Male
Motor Activity
Motor Processes
Movement
Newborn babies
Newborn. Infant
Noise
Psychoacoustics
Psychology
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Response Frequency
Responses
Sound
Stimulus Intensity
Stimulus Novelty
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Summary:Response decrement, novelty response, and dishabituation of body movements to repeated presentations of a white noise stimulus of 66, 76, and 86 dB were studied in 89, 2-3-day-olds in the first epoch of active-quiet sleep following a feeding. Newborns receiving the 86 dB repeating stimulus had greater movement scores compared to those receiving the 76 dB intensity who, in turn, had greater movement scores than those receiving the 66 dB intensity. All groups demonstrated movement response decline following repeated stimulation and a novelty response was observed when either a 66 or 76 dB repeating stimulus was increased to 86 dB. A novelty response was not observed when intensity was decreased and dishabituation was not observed following a novelty response. For a white noise stimulus, these findings are more consistent with the selective adaptation than the habituation explanation of neonatal response decrement to repeated auditory stimulation.
ISSN:1196-1961
0008-4255
1878-7290
DOI:10.1037/h0078875