ERIC Number: ED307988
Record Type: RIE
Publication Date: 1988-Apr
Reference Count: 0
Newborn's Motor Response to Pure-Tone Stimulation.
Olsho, Lynne Werner; Gillenwater, Jay M.
The effects of pure tone stimulation on ongoing motor activity of infants 1 to 4 days of age were studied using a passive, contactless monitoring device. Stimuli were pure tone bursts of 0.5, 1, and 4 kHz presented free field at an approximate level of 70 dB A. Signal trials consisted of 500 ms tone bursts, with rise/fall time equal to 10 ms, and with 500 ms silent intervals between bursts in a 10 s pulse train. No-signal trials were also 10 s in duration, but no tone burst occurred. Probability of a no-signal trial equaled 0.25. Trials started when the baby was active at a criterion level for at least 10 s. Activity was measured as the variance of the instantaneous output of the monitoring device. The probability of increase or maintenance of pre-trial activity was significantly higher on signal trials than on no-signal trials, especially for 0.5 and 4 kHz tone bursts. This effect may reflect a temporary sound-induced change in the infant's cyclic motility, and could afford a means for testing hearing in newborns. (Author)
Publication Type: Reports - Research; Speeches/Meeting Papers
Education Level: N/A
Authoring Institution: N/A
Note: Paper presented at the International Conference for Infant Studies (Washington, DC, April 20-24, 1988).