TY - JOUR

T1 - Evoked potentials to electrical stimulation of the facial nerve in the carp tectum mesencephali

AU - Vasilevskaya, N. E.

AU - Stankevich, L. N.

PY - 1976/1/1

Y1 - 1976/1/1

N2 - Tectal evoked potentials to stimulation of the facial nerve, containing afferent fibers of nonolfactory chemoreception, in the carp are positive evoked potentials with a latent period of 5 to 25 msec which show no phase shift as the microelectrode is advanced to a depth of 600 μ. Depending on the amplitude and latency of evoked potentials seven active zones differing in one or both parameters were distinguished in the ipsilateral tectum mesencephali. The role of impulses from the medulla in the mechanism of tectal evoked potentials to facial nerve stimulation is proved by differences in latent periods and disappearance of the tectal response (although it is preserved in the primary center) after severance of connections between the two parts of the brain. Descending influences from the tectum on the primary center were found: its extirpation disturbs evoked potential generation in several parts of the medullla, so that they either disappear completely or their parameters are modified.

AB - Tectal evoked potentials to stimulation of the facial nerve, containing afferent fibers of nonolfactory chemoreception, in the carp are positive evoked potentials with a latent period of 5 to 25 msec which show no phase shift as the microelectrode is advanced to a depth of 600 μ. Depending on the amplitude and latency of evoked potentials seven active zones differing in one or both parameters were distinguished in the ipsilateral tectum mesencephali. The role of impulses from the medulla in the mechanism of tectal evoked potentials to facial nerve stimulation is proved by differences in latent periods and disappearance of the tectal response (although it is preserved in the primary center) after severance of connections between the two parts of the brain. Descending influences from the tectum on the primary center were found: its extirpation disturbs evoked potential generation in several parts of the medullla, so that they either disappear completely or their parameters are modified.

UR - http://www.scopus.com/inward/record.url?scp=0017181504&partnerID=8YFLogxK

U2 - 10.1007/BF01065236

DO - 10.1007/BF01065236

M3 - Article

C2 - 1264291

AN - SCOPUS:0017181504

VL - 8

SP - 33

EP - 39

JO - Neurophysiology

JF - Neurophysiology

SN - 0090-2977

IS - 1

ER -