To study the role of amygdala in spatial memory through tasks of environmental cue manipulations, this study had been conducted on mice with recording electrodes at amygdala to monitor neuronal action potentials there and stimulating electrodes at middle forebrain bundle serving for electric stimulation rewards. In experiments, a CCO camera monitored and recorded mouse locomotions within open-fields and gathered neuronal data were digitalized and synchronized in a high speed CPU. The authors found that there was some amygdala neurons related to place; and those place-related cells were controlled by proximal cues. Moreover, those neurons responded clearly in familiar environment only. The result suggests the role of amygdala in spatial long-term memory retention, acting as a reference helping hippocampus in receiving novel information in new environments.
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