Constancy and variability in cortical structure. A study on synapses and 
dendritic spines in hedgehog and monkey

Schüz, A

Item

ITEM ACTIONSEXPORT

Add to Basket

Please note that a newer version of this item is available:
https://pure.mpg.de/pubman/item/item_1794503_2

DetailsSummary

Released

Journal Article

Constancy and variability in cortical structure. A study on synapses and dendritic spines in hedgehog and monkey

MPS-Authors

/persons/resource/persons84202

Schüz, A
Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Schüz, A. (1995). Constancy and variability in cortical structure. A study on synapses and dendritic spines in hedgehog and monkey. Journal für Hirnforschung, 36(1), 113-122.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-ECC2-4

Abstract

Synapses and dendritic spines were investigated in the parietal cortex of the hedgehog (Erinaceus europaeus) and the monkey (Macaca mulatta). There was no significant difference in the density of synapses between the two species (14 synapses/100 microns2 in the hedgehog, 15/100 microns2 in the monkey), neither in the size of the synaptic junctions, in the proportion of Type I and Type II synapses (8-10 were of Type II in the hedgehog, 10-14 in the monkey) nor in the proportion of perforated synapses (8 in the hedgehog, 5 in the monkey). The only striking difference at the electron microscopic level concerned the frequency of synapses in which the postsynaptic profile was deeply indented into the presynaptic terminal. Such synapses were 10 times more frequent in the monkey. Dendritic spines were investigated in Golgi-preparations. The density of spines along dendrites was similar in both species. The results are discussed with regard to connectivity in the cortex of small and large brains.