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Literature DB >> 207548

Retinal afferents form Gray-type-I and type-II synapses in the suprachiasmatic nucleus (rat).

Abstract

The synapses of optic nerve afferents in the suprachiasmatic nucleus (SCN) usually form Gray type I (asymmetrical) synapses, but about 13% show clear-cut Gray type II ( symmetrical) active zones. Some presynaptic elements form a Gray type I--active zone with one dendrite and a Gray type II-active zone with another postsynaptic element at the same time. It is discussed whether this variabilility is related to a simultaneous excitatory and inhibitory action, to a variable activity or efficiency of the synapses or to various stages of maturation.

Entities: Species

Mesh：

Year: 1978 PMID： 207548 DOI： 10.1007/bf00237393

Source DB: PubMed Journal: Exp Brain Res ISSN： 0014-4819 Impact factor: 1.972

20 in total

1. Axo-somatic and axo-dendritic synapses of the cerebral cortex: an electron microscope study.

Authors: E G GRAY
Journal: J Anat Date: 1959-10 Impact factor: 2.610

2. Quantitative autoradiographic light- and electron microscopic studies on the retinohypothalamic connections in the rat.

Authors: J K Mai; E Junger
Journal: Cell Tissue Res Date: 1977-09-26 Impact factor: 5.249

6. Light and electron microscopic analyses of the medial terminal nucleus of the accessory optic system in the mouse. I. Normal structure.

Authors: H Yamada
Journal: Z Mikrosk Anat Forsch Date: 1974

1. Synapses of optic nerve afferents in the rat suprachiasmatic nucleus. II. Structural variability as revealed by morphometric examination.

Authors: F H Güldner
Journal: Cell Tissue Res Date: 1978-11-09 Impact factor: 5.249

2. Synapses of optic nerve afferents in the rat suprachiasmatic nucleus. I. Identification, qualitative description, development and distribution.

Authors: F H Güldner
Journal: Cell Tissue Res Date: 1978-11-09 Impact factor: 5.249

3. Suprachiasmatic nucleus neurones: excitation and inhibition mediated by the direct retino-hypothalamic projection in female rats.

Authors: Y Sawaki
Journal: Exp Brain Res Date: 1979-09 Impact factor: 1.972

3 in total

Retinal afferents form Gray-type-I and type-II synapses in the suprachiasmatic nucleus (rat).

1. Axo-somatic and axo-dendritic synapses of the cerebral cortex: an electron microscope study.

2. Quantitative autoradiographic light- and electron microscopic studies on the retinohypothalamic connections in the rat.

3. Noradrenergic axon terminals in the cerebral cortex of rat. III. Topometric ultrastructural analysis.

4. Effects of serotonin on central neurons: microiontophoretic administration.

5. Reciprocal lateral inhibition of on- and off-center neurones in the lateral geniculate body of the cat.

6. Light and electron microscopic analyses of the medial terminal nucleus of the accessory optic system in the mouse. I. Normal structure.

7. The mechanism of selective reinnervation of fish eye muscles. IV. Identification of repressed synapses.

8. Retinohypothalamic projection: electrophysiological evidence for the existence in female rats.

9. Synaptic changes in frog brain after stimulation with potassium chloride.

10. Postnatal development of the suprachiasmatic hypothalamic nucleus of the rat.

1. Synapses of optic nerve afferents in the rat suprachiasmatic nucleus. II. Structural variability as revealed by morphometric examination.

2. Synapses of optic nerve afferents in the rat suprachiasmatic nucleus. I. Identification, qualitative description, development and distribution.

3. Suprachiasmatic nucleus neurones: excitation and inhibition mediated by the direct retino-hypothalamic projection in female rats.