Visual potentiation of vestibular responses in lamprey reticulospinal neurons

The European Journal of Neuroscience
F UllénS Grillner

Abstract

The lamprey normally swims with the dorsal side up. Illumination of one eye shifts the set-point of the vestibular roll control system, however, so that the animal swims with a roll tilt towards the source of light (the dorsal light response). A tilted orientation is often maintained for up to 1 min after the stimulation. In present study, the basis for this behaviour was investigated at the neuronal level. The middle rhombencephalic reticular nucleus (MRRN) is considered a main nucleus for the control of roll orientation in lampreys. Practically all MRRN neurons receive vestibular and visual input and project to the spinal cord. Earlier extracellular experiments had shown that optic nerve stimulation potentiates the response to vestibular stimulation in the ipsilateral MRRN. This most likely represents a neural correlate of the dorsal light response. Experiments were carried out in vitro on the isolated brainstem of the silver lamprey (Ichthyomyzon unicuspis). MRRN cells were recorded intracellularly, and the overall activity of descending systems was monitored with bilateral extracellular electrodes. The responses to 10 Hz optic nerve stimulation and 1 Hz vestibular nerve stimulation, and the influence of optic nerve stimulat...Continue Reading

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Citations

May 11, 1999·The Journal of Comparative Neurology·N BussièresR Dubuc
Oct 6, 2010·BMC Biology·Linda M NevinEthan K Scott
Oct 18, 2014·Frontiers in Integrative Neuroscience·Tatiana G DeliaginaPavel V Zelenin
Oct 6, 2007·Brain Research Reviews·Réjean DubucDanielle Veilleux
May 8, 2007·The Journal of Comparative Neurology·Brita RobertsonRéjean Dubuc
Dec 24, 2005·Physiological Reviews·Serge RossignolJean-Pierre Gossard
Nov 3, 2006·Journal of Neurophysiology·A KarayannidouT G Deliagina
Feb 17, 2007·Journal of Neurophysiology·Kazuya SaitohSten Grillner
Mar 27, 2004·Journal of Neurophysiology·Didier Le RayRéjean Dubuc
Nov 16, 2007·Journal of Neurophysiology·Salma S Islam, Pavel V Zelenin
Sep 25, 2020·Scientific Reports·Tobias Wibble, Tony Pansell
Feb 11, 2000·Journal of Neurophysiology·T G Deliagina, P Fagerstedt
Feb 11, 2000·Journal of Neurophysiology·T G DeliaginaG N Orlovsky
Jul 11, 1998·Journal of Neurophysiology·T WannierS Grillner
Aug 1, 1997·Journal of Neurophysiology·F UllénS Grillner
Dec 8, 2004·The Journal of Experimental Biology·Elena L PavlovaTatiana G Deliagina

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