Central projections of auditory nerve fibers in the western rat snake (Pantherophis obsoletus)

Simple item page
dc.contributor.authorHan, Dawei
dc.contributor.authorCarr, Catherine E.
dc.date.accessioned2023-10-05T19:11:40Z
dc.date.available2023-10-05T19:11:40Z
dc.date.issued2023-05-28
dc.description.abstractDespite the absence of tympanic middle ears, snakes can hear. They are thought to primarily detect substrate vibration via connections between the lower jaw and the inner ear. We used the western rat snake (Pantherophis obsoletus) to determine how vibration is processed in the brain. We measured vibration-evoked potential recordings to reveal sensitivity to low-frequency vibrations. We then used tract tracing combined with immunohistochemistry and Nissl staining to describe the central projections of the papillar branch of the VIIIth nerve. Applications of biotinylated dextran amine to the basilar papilla (homologous to the organ of Corti of mammals) labeled bouton-like terminals in two first-order cochlear nuclei, a rostrolateral nucleus angularis (NA) and a caudomedial nucleus magnocellularis (NM). NA formed a distinct dorsal eminence, consisted of heterogenous cell types, and was parvalbumin positive. NM was smaller and poorly separated from the surrounding vestibular nuclei. NM was distinguished by positive calbindin label and included fusiform and round cells. Thus, the atympanate western rat snake shares similar first-order projections to tympanate reptiles. Auditory pathways may be used for detecting vibration, not only in snakes but also potentially in atympanate early tetrapods.
dc.description.urihttps://doi.org/10.1002/cne.25495
dc.identifierhttps://doi.org/10.13016/dspace/xmf3-uc3g
dc.identifier.citationHan, D., & Carr, C. E. (2023). Central projections of auditory nerve fibers in the western rat snake (Pantherophis obsoletus). Journal of Comparative Neurology, 531, 1261–1273.
dc.identifier.urihttp://hdl.handle.net/1903/30699
dc.language.isoen_US
dc.publisherWiley
dc.relation.isAvailableAtCollege of Computer, Mathematical & Physical Sciencesen_us
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_us
dc.relation.isAvailableAtBiologyen_us
dc.relation.isAvailableAtUniversity of Maryland (College Park, MD)en_us
dc.subjectauditory
dc.subjectcochlear nerve
dc.subjectcochlear nuclei
dc.subjectimmunohistochemistry
dc.subjectreptile
dc.subjectsnake
dc.subjecttract tracing
dc.titleCentral projections of auditory nerve fibers in the western rat snake (Pantherophis obsoletus)
dc.typeArticle
local.equitableAccessSubmissionNo

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
J of Comparative Neurology - 2023 - Han - Central projections of auditory nerve fibers in the western rat snake .pdf
Size:
8.28 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.55 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Biology Research Works