干旱区生态环境知识资源中心(Arid): Matched-filter coding of sky polarization results in an internal sun compass in the brain of the desert locust

Arid

DOI	10.1073/pnas.2005192117
	Matched-filter coding of sky polarization results in an internal sun compass in the brain of the desert locust
	Zittrell, Frederick; Pfeiffer, Keram; Homberg, Uwe
通讯作者	Homberg, U
来源期刊	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN	0027-8424
出版年	2020
卷号	117 期号:41 页码:25810-25817
英文摘要	Many animals use celestial cues for spatial orientation. These include the sun and, in insects, the polarization pattern of the sky, which depends on the position of the sun. The central complex in the insect brain plays a key role in spatial orientation. In desert locusts, the angle of polarized light in the zenith above the animal and the direction of a simulated sun are represented in a compass-like fashion in the central complex, but how both compasses fit together for a unified representation of external space remained unclear. To address this question, we analyzed the sensitivity of intracellularly recorded central-complex neurons to the angle of polarized light presented from up to 33 positions in the animal's dorsal visual field and injected Neurobiotin tracer for cell identification. Neurons were polarization sensitive in large parts of the virtual sky that in some cells extended to the horizon in all directions. Neurons, moreover, were tuned to spatial patterns of polarization angles that matched the sky polarization pattern of particular sun positions. The horizontal components of these calculated solar positions were topographically encoded in the protocerebral bridge of the central complex covering 360 degrees of space. This whole-sky polarization compass does not support the earlier reported polarization compass based on stimulation from a small spot above the animal but coincides well with the previously demonstrated direct sun compass based on unpolarized light stimulation. Therefore, direct sunlight and whole-sky polarization complement each other for robust head direction coding in the locust central complex.
英文关键词	sky compass polarized light spatial orientation central complex desert locust
类型	Article
语种	英语
开放获取类型	Green Published, hybrid
收录类别	SCI-E
WOS记录号	WOS:000579507500029
WOS关键词	DORSAL RIM AREA ; CENTRAL COMPLEX ; HEAD DIRECTION ; ATTRACTOR DYNAMICS ; RECEPTIVE-FIELDS ; ORIENTATION ; INTEGRATION ; SKYLIGHT ; VISION ; CUES
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326869
作者单位	[Zittrell, Frederick; Homberg, Uwe] Philipps Univ Marburg, Dept Anim Physiol, D-35032 Marburg, Germany; [Zittrell, Frederick; Homberg, Uwe] Philipps Univ Marburg, Ctr Mind Brain & Behav CMBB, D-35032 Marburg, Germany; [Zittrell, Frederick; Homberg, Uwe] Justus Liebig Univ Giessen, D-35032 Marburg, Germany; [Pfeiffer, Keram] Univ Wurzburg, Bioctr, Behav Physiol & Sociobiol, D-97074 Wurzburg, Germany
推荐引用方式 GB/T 7714	Zittrell, Frederick,Pfeiffer, Keram,Homberg, Uwe. Matched-filter coding of sky polarization results in an internal sun compass in the brain of the desert locust[J],2020,117(41):25810-25817.
APA	Zittrell, Frederick,Pfeiffer, Keram,&Homberg, Uwe.(2020).Matched-filter coding of sky polarization results in an internal sun compass in the brain of the desert locust.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,117(41),25810-25817.
MLA	Zittrell, Frederick,et al."Matched-filter coding of sky polarization results in an internal sun compass in the brain of the desert locust".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117.41(2020):25810-25817.