Abstract：
:The cartilaginous and non-neopterygian bony fishes have an electric sense typically comprised of hundreds or thousands of sensory canals distributed in broad clusters over the head. This morphology facilitates neural encoding of local electric field intensity, orientation, and polarity, used for determining the position of nearby prey. The coelacanth rostral organ electric sense, however, is unique in having only three paired sensory canals with distribution restricted to the dorsal snout, raising questions about its function. To address this, we employed magnetic resonance imaging methods to map electrosensory canal morphology in the extant coelacanth, Latimeria chalumnae, and a simple dipole 'rabbit ears' antennae model with toroidal gain function to approximate their directional sensitivity. This identified a unique focal region of electrosensitivity directly in front of the mouth, and is the first evidence of a low-resolution electro-detector that solely facilitates prey ingestion.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Berquist RM,Galinsky VL,Kajiura SM,Frank LRdoi
10.1038/srep08962subject
Has Abstractpub_date
2015-03-11 00:00:00pages
8962issn
2045-2322pii
srep08962journal_volume
5pub_type
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pub_type： 杂志文章
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journal_title：Scientific reports
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pub_type： 杂志文章,meta分析,评审
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journal_title：Scientific reports
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