Responses of descending neurons to looming stimuli in the praying mantis Tenodera aridifolia

Yoshifumi Yamawaki, Yoshihiro Toh

研究成果: ジャーナルへの寄稿学術誌査読

26 被引用数 (Scopus)


Responses to visual stimuli of some neurons that descend the nerve cord from the brain were recorded extracellularly in the mantis Tenodera aridifolia. Most of the recorded neurons showed their largest responses to looming stimuli that simulated a black circle approaching towards the mantis. The neurons showed a transient excitatory response to a gradually darkening or receding circle. The neurons showed sustained excitation to the linearly expanding stimuli, but the spike frequency decreased rapidly. The responses of the neurons were affected by both the diameter and the speed of looming stimuli. Faster or smaller looming stimuli elicited a higher peak frequency. These responses were observed in both recordings from the connective between suboesophageal and prothoracic ganglia and the connective between prothoracic and mesothoracic ganglia. There was a one-to-one correspondence of spike firing between these two recordings with a fixed delay. The neurons had the receptive field on ipsilateral side to its axon at the cervical connective. These results suggest that there is a looming-sensitive descending neuron, with an axon projecting over prothoracic ganglion, in the mantis nervous system.

ジャーナルJournal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology
出版ステータス出版済み - 3月 2009

!!!All Science Journal Classification (ASJC) codes

  • 生態、進化、行動および分類学
  • 生理学
  • 動物科学および動物学
  • 行動神経科学


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