Ultrastructure of Mauthner Neurons in Optokinetic Stimulation and Enucleation of the Eye

Autor:	E. N. Bezgina, I. B. Mikheeva, R. Sh. Shtanchaev, D. A. Moshkov, E. E. Grigorieva, N. Yu. Tsaplina, G. Z. Mikhailova, N. R. Tiras
Rok vydání:	2012
Předmět:	Chemistry General Neuroscience medicine.medical_treatment Dendrite Enucleation of the eye Mauthner cell medicine.anatomical_structure Ultrastructure medicine Excitatory postsynaptic potential Functional activity Cytoskeleton Neuroscience Optokinetic stimulation
Zdroj:	Neuroscience and Behavioral Physiology. 42:759-763
ISSN:	1573-899X 0097-0549
Popis:	Previous studies have shown that contralateral (to the preferred turning side) optokinetic stimulation and ipsilateral enucleation of the eye lead to significant (by a factor of 2–4) decreases in the volume of the ventral dendrite (VD) in one of the two Mauthner neurons (MN) of the goldfish, which becomes functionally more active. We report here our studies of MN ultrastructure after these unilateral influences from the visual system. In both cases, the whole length of the shrunken VD showed emptying of synapses and compaction of its cytoskeleton as compared with the cytoskeleton of the VD of the contralateral MN and the cytoskeleton of the lateral dendrites and bodies of both neurons. It is suggested that emptied synapses are part of the excitatory visual input and that the control of the functional activity of MN via VD involves both cytoskeletal and synaptic mechanisms.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f67cebdb203bd19a48596e2ade9f59d8 https://doi.org/10.1007/s11055-012-9631-x Zobrazit plný text záznamu Full text from SpringerLink