Pulsed ultrasound and electrocortical activity in fetal sheep.


The aim of this study was to determine if low intensity ultrasound affects electrocortical activity in chronically instrumented fetal sheep. A 3.5-MHz transducer was attached to each fetal skull (n = 9) and activated periodically to emit pulses of 5.8 microseconds duration at a repetition rate of 2 kHz generating a power output of 60 mW. The power supply… (More)


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