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A Synaptic Mechanism on Prepositus Hypoglossi Neurons Underlying Eye Fixation
Author(s) -
NAVARROLOPEZ JUAN D.,
ALVARADO JUAN CARLOS,
ESCUDERO MIGUEL,
DELGADOGARCÍA JOSÉ M.,
YAJEYA JAVIER
Publication year - 2003
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.2003.tb00253.x
Subject(s) - neuroscience , excitatory postsynaptic potential , fixation (population genetics) , eye movement , tonic (physiology) , cholinergic , reticular formation , biology , anatomy , inhibitory postsynaptic potential , central nervous system , biochemistry , gene
We have studied in vitro and in vivo the origin of the persistent neuronal activity underlying eye positions of fixation after eye saccades in the horizontal plane. It is proposed that the tonic firing presented by prepositus hypoglossi neurons during eye fixations is the result of the combined action of eye‐velocity signals arriving from excitatory burst neurons and the facilitative role of cholinergic terminals of reticular origin.