FLIGHT-CORRELATED ACTIVITY CHANGES IN NEURONS OF THE LATERAL ACCESSORY LOBES IN THE BRAIN OF THE LOCUST SCHISTOCERCA-GREGARIA
FLIGHT-CORRELATED ACTIVITY CHANGES IN NEURONS OF THE LATERAL ACCESSORY LOBES IN THE BRAIN OF THE LOCUST SCHISTOCERCA-GREGARIA
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DOI：
10.1007/bf00199481
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发表时间：
1994-11-01
期刊：
影响因子：
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通讯作者：
HOMBERG, U
中科院分区：
文献类型：
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作者：
HOMBERG, U
本研究调查了蝗虫在风诱导系绳飞行过程中大脑侧副叶神经元的活动变化。从腹侧神经索到外侧副叶的上升突起的神经元表现出飞行相关的兴奋，这种兴奋在飞行运动节律中被调节。在侧副叶分支的下行神经元与飞行持续时间相对应。在下降神经元中，风引发的反应比飞行运动活动的开始早22-60毫秒。连接外侧副叶与中央体、前视结节或其他脑区的神经元在飞行开始和飞行结束时表现出多种反应，包括活动变化。许多这些神经元的活动与飞行情况的联系不那么紧密，经常在飞行结束前恢复到背景水平。此外，大多数记录的神经元对静止的视觉刺激有反应。结果表明，蝗虫大脑的外侧副叶是连接中央体、视觉通路和腹侧神经索的综合纽带。讨论了这些脑区参与飞行控制的可能性。
The study investigates activity changes in neurons of the lateral accessory lobes in the brain of the locust Schistocerca gregaria during wind-elicited tethered flight. Neurons with ascending projections from the ventral nerve cord to the lateral accessory lobes showed flight-associated excitations which were modulated in the flight motor rhythm. Descending neurons with ramifications in the lateral accessory lobes were tonically ex cited corresponding to flight duration. The onset of wind-elicited responses in the descending neurons pre ceded the onset of flight motor activity by 22-60 milliseconds. Neurons connecting the lateral accessory lobes with the central body, the anterior optic tubercles, or other brain areas showed a variety of responses including activity changes during flight initiation and flight termination. Activity in many of these neurons was less tightly coupled to the flight situation and often returned to background levels before flight was terminated. Most of the recorded neurons responded, in addition, to stationary visual stimuli. The results suggest that the lateral accessory lobes in the locust brain are integrative links between the central body, visual pathways, and the ventral nerve cord. The possible involvement of these brain areas in flight control is discussed.