PMID: 6536905Dec 1, 1984Paper

Responses of the nucleus of the optic tract neurons projecting to the nucleus reticularis tegmenti pontis upon optokinetic stimulation in the rabbit

Neuroscience Research
K MaekawaM Kimura

Abstract

The activity of cells (n = 55) in the nucleus of the optic tract (NOT) in pigmented rabbits was recorded extracellularly. All cells were activated orthodromically from the optic chiasm (latency 2.3 +/- 0.4 ms, mean and S.D., n = 33). The mean conduction velocity of optic nerves to the NOT was 19.0 m/s, and the mean nuclear delay in the NOT was 0.9 ms. Stimulation to the nucleus reticularis tegmenti pontis (Nrtp) antidromically activated 37 cells (latency 1.0 +/- 0.3 ms) (Nrtp(+)cell) but did not antidromically activate the other 18 cells (Nrtp(-) cell). The response properties were studied by spike density histograms constructed during the application of moving visual stimuli (random dot patterns, 0.1-200 degrees/s). The optimal velocity was 5-50 degrees/s for the majority (74%, n = 29) of the total samples tested. Of 10 cells preferring high velocities (75-150 degrees/s), four times as many Nrtp(+) cells (n = 8) preferred high velocities as did Nrtp(-) cells. The optimal velocities of Nrtp(+) cells significantly correlated with the rostro-caudality of recording sites in the NOT, the more rostral cells preferring a slower velocity. Nrtp(+) cells preferred not only a horizontal (53%) but also a vertical or diagonal orientation i...Continue Reading

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Citations

Oct 21, 1993·Behavioural Brain Research·U J IlgK P Hoffmann
Oct 1, 1991·Neuroscience Research·U J Ilg, K P Hoffmann
Jun 6, 2003·Brain Research Bulletin·Neal H Barmack
Oct 14, 2005·Progress in Brain Research·Neal H Barmack
Jan 1, 1994·Experimental Brain Research·A Pereira JúniorC E Rocha-Miranda

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