The response of the human newborn to visual movement |
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| Authors: | M M Haith |
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| Affiliation: | 1. First Department of Oral and Maxillofacial Surgery, Graduate School of Dentistry, Osaka University, Suita, Osaka, Japan;2. Department of Oral and Maxillofacial Surgery, National Center for Global Health and Medicine, Shinjuku-ku, Tokyo, Japan;3. Faculty of Nursing, Japanese Red Cross College of Nursing, Shibuya-ku, Tokyo, Japan;4. Biostatistics Section, Clinical Research Center, Chiba University Hospital, Chuo-ku, Chiba, Japan;5. School of Pharmaceutical Sciences, University of Shizuoka, Division of Drug Evaluation & Informatics, Suruga-ku, Shizuoka, Japan;1. Uppsala University, Department of Psychology, Uppsala Child and Baby Lab, Sweden;2. Karolinska Institutet, Department of Clinical Neuroscience, Division of Psychology, Sweden;3. Lund University, Forensic Psychiatry, Department of Clinical Sciences, Malmö, Sweden |
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| Abstract: | The present study was concerned with responsiveness and habituation of responsiveness of the human newborn to an intermittent moving visual stimulus. The response measure was suppression of the rate of nonnutritive sucking. The relation of age and sex to these phenomena were also investigated. Forty-one infants, 3–5 days of age, were given 12 control and 12 experimental trials, 10 seconds in duration, in which time they were given an opportunity to suck on a pacifier. The trials differed only in that intermittent movement of a light occurred during the second 5-second interval of the experimental trials. The reduction in sucking rate was reliably greater on exeprimental than control trials. No habituation was found with repeated presentations of the stimulus. Neither sex nor age was related to these main effects. Stable individual differences in sucking rate were found. |
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