Abstract：
:Field potentials (FP) recorded from the surface of toad's optic tectum (OT) to electrical stimulation of the contralateral optic nerve (ON) show initial positive deflections P*, followed by negative wave N and positive wave P; the former result from axonal inputs, the latter two resemble excitatory and inhibitory postsynaptic processes, respectively. Electrostimulation of the pretectum ipsilaterally to the recorded OT--preceeding ON-stimulation--strongly attenuates the N wave, suggesting pretectotectal inhibitory influences. The N wave of the tectal FP evoked by ON-stimulation is reduced, too, after application of the neuropeptide-Y (NPY) to the tectal surface. Previous authors have shown that frog's pretectum contains NPY immunoreactive pretectotectal projecting cells.
journal_name
Brain Resjournal_title
Brain researchauthors
Schwippert WW,Ewert JPdoi
10.1016/0006-8993(94)01260-osubject
Has Abstractpub_date
1995-01-09 00:00:00pages
150-2issue
1eissn
0006-8993issn
1872-6240pii
0006-8993(94)01260-Ojournal_volume
669pub_type
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