McCracken M S, Russell J L, Fletcher E R, Manley J
Lab Anim Sci. 1984 Oct;34(5):475-9.
A piezoelectric crystal was used to detect respiration rates and pulmonary retractions of guinea pigs in response to intratracheal administration of histamine. Voltage output from the crystal was displayed on a recorder for visual processing and interfaced to a microcomputer for automatic data processing. Using intratracheal instillation of histamine, this system accurately reproduced the visual observations of respiratory responses in guinea pigs.
使用压电晶体来检测豚鼠在气管内给予组胺后的呼吸频率和肺回缩情况。晶体的电压输出显示在记录仪上以便进行视觉处理，并与微型计算机连接以进行自动数据处理。通过气管内滴注组胺，该系统准确地重现了豚鼠呼吸反应的视觉观察结果。
