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本文比较研究了小白鼠对主峰频率200Hz的前兆性轰隆声和对粉红噪声的记忆反应。结果表明,小白鼠不仅能对这种地声信号产生明显的记忆反应,而且受训鼠对这种地声信号敏感性显著增高。 1.地声组(Gs.G.)和噪声组(N.G.)穿门反应的时间-强度曲线(TIC)都近似指数衰减。在1—5s內(SPL 10dB)的峰值强度分别为0.71和0.40。对照观察(Con.)的TIC近似随机事件的正态分布,1—5s內的反应强度仅为0.13,11—15s內的峰值强度为0.32。 2.地声组对10dB的地声信号穿门反应的潜伏期为2.45±0.5s,即比噪声组平均短0.86s;对10—30dB的地声信号穿门反应的潜伏期比噪声组约短2s。 3.地声组穿门反应的群体效应明显增高。以3只鼠和4只鼠的群体穿门反应的比率分別为Con.的1.6倍和2.9倍。 4.地声组的受试动物对250Hz纯音反应的TIC仍接近于对地声信号的反应,而对粉红噪声的反应明显地失去原来的反应特性。
This article comparatively studied the mice ’s memory response to the precursory rumble of the main peak frequency 200 Hz and the pink noise. The results showed that the mice not only had a significant memory response to these signals, but also the sensitivities of trained mice to these signals were significantly higher. 1. The time-intensity curves (TIC) of the gosling group (Gs.G.) and the noise group (N.G.) through the portal reaction all approximate exponential decay. The peak intensities within 1-5 s (SPL 10 dB) are 0.71 and 0.40, respectively. The TIC of the control observation (Con.) Approximates the normal distribution of random events with a response intensity of only 0.13 within 1-5 seconds and a peak intensity of 0.32 over the 11-15 s. (2) Geo-acoustic group had a latency of 2.45 ± 0.5s, which was 0.86s shorter than that of the noise group. The incubation period of 10-30dB geophone signal was about 2s shorter than that of the noise group . 3. Ge sound group door reaction population effect was significantly higher. The rates of demographic response in groups of 3 mice and 4 mice were 1.6 times and 2.9 times that of Con. The TIC of 250Hz pure tone response of the Geonet test animals is still close to that of the ground acoustic signal, but the response to the pink noise obviously loses the original reaction characteristics.