Gerber S E
J Am Aud Soc. 1979 Nov-Dec;5(3):123-9.
Fifteen normal infants were seen at the ages of 1, 2, and 3 months. Cardiac responses to auditory stimuli of various frequencies and intensities were evaluated to determine the effects of age of the infant, frequency of the stimulus, and intensity of the stimulus. Heart rate was measured by a fingertip pulse counter and recorded on a polygraph. While the heart rate was being monitored, the infant was presented with a series of tone bursts of 1.5-sec duration with an interstimulus interval of 13.5 sec. Frequencies and intensities of stimuli were found to have no effects on the response. The cardiac rate response was influenced more by the ages of the infants than by stimulus parameters. Variability of the data for two-month-old children seemed to indicate a transition occurring at this age. However, the major influence upon the response was found to be the prestimulus heart rate.
对15名正常婴儿在1个月、2个月和3个月大时进行了观察。评估了心脏对各种频率和强度听觉刺激的反应，以确定婴儿年龄、刺激频率和刺激强度的影响。通过指尖脉搏计数器测量心率，并记录在多导记录仪上。在监测心率时，向婴儿呈现一系列持续1.5秒的纯音脉冲，刺激间隔为13.5秒。发现刺激的频率和强度对反应没有影响。心率反应受婴儿年龄的影响大于受刺激参数的影响。两个月大儿童数据的变异性似乎表明在这个年龄正在发生转变。然而，发现对反应的主要影响是刺激前的心率。
