Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1152/jn.00927.2016 |
Interaction of compass sensing and object-motion detection in the locust central complex | |
Bockhorst, Tobias; Homberg, Uwe | |
通讯作者 | Homberg, Uwe |
来源期刊 | JOURNAL OF NEUROPHYSIOLOGY
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ISSN | 0022-3077 |
EISSN | 1522-1598 |
出版年 | 2017 |
卷号 | 118期号:1页码:496-506 |
英文摘要 | Goal-directed behavior is often complicated by unpredictable events, such as the appearance of a predator during directed locomotion. This situation requires adaptive responses like evasive maneuvers followed by subsequent reorientation and course correction. Here we study the possible neural underpinnings of such a situation in an insect, the desert locust. As in other insects, its sense of spatial orientation strongly relies on the central complex, a group of midline brain neuropils. The central complex houses sky compass cells that signal the polarization plane of skylight and thus indicate the animal’s steering direction relative to the sun. Most of these cells additionally respond to small moving objects that drive fast sensory-motor circuits for escape. Here we investigate how the presentation of a moving object influences activity of the neurons during compass signaling. Cells responded in one of two ways: in some neurons, responses to the moving object were simply added to the compass response that had adapted during continuous stimulation by stationary polarized light. By contrast, other neurons disadapted, i.e., regained their full compass response to polarized light, when a moving object was presented. We propose that the latter case could help to prepare for reorientation of the animal after escape. A neuronal network based on central-complex architecture can explain both responses by slight changes in the dynamics and amplitudes of adaptation to polarized light in CL columnar input neurons of the system. NEW & NOTEWORTHY Neurons of the central complex in several insects signal compass directions through sensitivity to the sky polarization pattern. In locusts, these neurons also respond to moving objects. We show here that during polarized-light presentation, responses to moving objects override their compass signaling or restore adapted inhibitory as well as excitatory compass responses. A network model is presented to explain the variations of these responses that likely serve to redirect flight or walking following evasive maneuvers. |
英文关键词 | insect brain central complex desert locust spatial orientation sky compass escape behavior goal conflict gain modulation context dependency neural modeling |
类型 | Article |
语种 | 英语 |
国家 | Germany |
收录类别 | SCI-E |
WOS记录号 | WOS:000408099400001 |
WOS关键词 | LOOMING-SENSITIVE NEURON ; ANTERIOR OPTIC TUBERCLE ; COLLISION-AVOIDANCE ; FLYING LOCUSTS ; INSECT BRAIN ; POLARIZED SKYLIGHT ; DROSOPHILA BRAIN ; COMPOUND EYE ; ORGANIZATION ; ORIENTATION |
WOS类目 | Neurosciences ; Physiology |
WOS研究方向 | Neurosciences & Neurology ; Physiology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/200699 |
作者单位 | Philipps Univ, Dept Biol, Anim Physiol, Karl von Frisch Str 8, D-35032 Marburg, Germany |
推荐引用方式 GB/T 7714 | Bockhorst, Tobias,Homberg, Uwe. Interaction of compass sensing and object-motion detection in the locust central complex[J],2017,118(1):496-506. |
APA | Bockhorst, Tobias,&Homberg, Uwe.(2017).Interaction of compass sensing and object-motion detection in the locust central complex.JOURNAL OF NEUROPHYSIOLOGY,118(1),496-506. |
MLA | Bockhorst, Tobias,et al."Interaction of compass sensing and object-motion detection in the locust central complex".JOURNAL OF NEUROPHYSIOLOGY 118.1(2017):496-506. |
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