| 摘要 |
An apparatus for sensitive measurement and recording of the responses and activity in a biological specimen useful for the toxicological and pharmacological investigation of drugs, chemicals and gaseous environments. The apparatus includes an environmental chamber in which a biological specimen is stereotaxically mounted for positioning in selectable engagement with the probe of a piezoelectric transducer. The atmosphere within the chamber may be controlled to provide a particular gas within the chamber such as a contaminated or polluted air environment. The physiological activity or responses of a specimen to a selected gas or to manually administered drugs or chemicals are measured by the transducing device. The signal is then suitably amplified, filtered, processed and controlled to provide a visual or auditory recording of the processed signal. |
