Fischer T M, Yuan J W, Carew T J
Department of Psychology, Yale University, USA.
Behav Neurosci. 2000 Dec;114(6):1209-22. doi: 10.1037//0735-7044.114.6.1209.
The state of an animal's environment can be viewed as a source of information that can be used to regulate both ongoing and future behavior. The present work examined how the ambient environment can regulate the Aplysia siphon withdrawal reflex (SWR) by changing the environment between calm and turbulent. Results indicate that the SWR is dynamically regulated on the basis of variations in external conditions, so that responsiveness (measured as both reflex duration and threshold) is matched to the state of the environment. Prior exposure to a noxious stimulus (tailshock) has selective effects on this regulation, suggesting the existence of multiple regulatory mechanisms. Further, neurophysiological correlates to behavioral observations were measured in sensory and motor neurons. This will allow for a detailed cellular analysis of environmental information-processing in this system.
动物所处环境的状态可被视为一种信息源，该信息源可用于调节当前及未来的行为。本研究探讨了环境如何通过在平静和动荡之间改变环境来调节海兔的虹吸式退缩反射（SWR）。结果表明，SWR是根据外部条件的变化而动态调节的，因此反应性（以反射持续时间和阈值来衡量）与环境状态相匹配。先前暴露于有害刺激（尾部电击）对这种调节有选择性影响，这表明存在多种调节机制。此外，还在感觉神经元和运动神经元中测量了与行为观察相关的神经生理学指标。这将有助于对该系统中环境信息处理进行详细的细胞分析。
