Abrams R M, Peters A J, Gerhardt K J, Burchfield D J
Department of Obstetrics and Gynecology, University of Florida, Gainesville 32610.
J Dev Physiol. 1993 Apr;19(4):171-7.
Behavioral state and cerebral glucose utilization were measured in six fetal sheep subjected to high intrauterine sound pressures created with a vibroacoustic stimulator pressed against the maternal abdomen. The signal consisted of a complex waveform that varied over time with a 50% duty cycle. An implanted hydrophone showed highest spectral levels between 3,000-16,000 Hz. The pulsed sound resulted in a significant loss of fetal rapid eye movement and non-rapid eye movement sleep. The stimulus also resulted in a disruption in the normally close relationship between these sleep states and cerebral glucose utilization rates in the brain as a whole and in its component parts.
对六只处于子宫内的胎羊进行了行为状态和脑葡萄糖利用率的测量，这些胎羊受到通过压在母羊腹部的振动声学刺激器产生的高子宫内声压影响。该信号由一个复杂的波形组成，其随时间变化，占空比为50%。植入的水听器显示在3000 - 16000赫兹之间频谱水平最高。脉冲声音导致胎儿快速眼动睡眠和非快速眼动睡眠显著减少。该刺激还导致这些睡眠状态与整个大脑及其各组成部分的脑葡萄糖利用率之间通常紧密的关系受到干扰。
