The island of Calleja complex of rat basal forebrain. I. Light and electron microscopic observations

@article{Ribak1982TheIO,
  title={The island of Calleja complex of rat basal forebrain. I. Light and electron microscopic observations},
  author={Charles E. Ribak and James H. Fallon},
  journal={Journal of Comparative Neurology},
  year={1982},
  volume={205}
}
An analysis of the cells and their processes within the island of Calleja complexes (ICC) was made in light and electron microscopic preparations to determine synaptic relationships within this part of the basal forebrain. The light microscopic preparations showed that the ICC contained two cell types, granule cells and large cells. In electron microscopic preparations, the somata of granule cells were grouped together and were directly apposed to other somata of granule cells. Specialized… 

Electron microscopy of cell islands in layer II of the primate entorhinal cortex

An electron microscopic analysis of cell islands in layer II of the entorhinal cortex from rhesus monkeys was made to determine the ultrastructural features of these unique neuronal clusters. The

Granule cells of the olfactory tubercle and the question of the islands of calleja

The granule cell clusters in the rat olfactory tubercle were studied in Nissl‐stained and Golgi‐impregnated sections and revealed a small population of granule cells is spine‐rich, which may contain larger neurons.

Aggregations of granule cells in the basal forebrain (islands of Calleja): Golgi and cytoarchitectonic study in different mammals, including man

A constant topographical relationship exists between granule cell clusters and the parvicellular sublenticular cell groups, which reach their maximum development in man, and between gran‐ ule cells and the rostra1 extension of the nucleus basalis of Meynert.

The islands of Calleja complex of rat basal forebrain. III. Histochemical evidence for a Striatopallidal system

The characteristics of the islands of Calleja complex (ICC) in the basal forebrain of the rat were studied with immunohistochemistry, histofluorescence, acetylcholinesterase staining, India ink

Cell configurations in the olfactory tubercle of the rat

The rat olfactory tubercle was studied with the rapid Golgi method. Several distinct cell types were identified mainly on the basis of the size of their somata and the structure of their dendrites.

Ultrastructure of neurons in the nucleus basalis of meynert in squirrel monkey

No remarkable ultrastructural differences were observed between nucleus basalis so‐mata in the substantia innominata and external pallidal lamina, or between horseradish peroxidase‐labeled and unlabeled large cells.

Cell structure in the islands of calleja in carnivore brains

The aim of the present work was to study the structural and ultrastructural characteristics of all types of nerve cells present in the islands of Calleja in carnivores and to detect the presence of some of their presumed projections (to the posterolateral hypothalamus).

Membrane properties of the granule cells of the islands of Calleja of the rat studied in vitro.

Current‐clamp recordings indicated that the granule cells of the islands of Calleja are excitable and contain a number of additional regulatory conductances.

Immunocytochemical localization of choline acetyltransferase in rat ventral striatum: a light and electron microscopic study

Results suggest that the densely ChAT-positive neuropil areas within ventral striatum receive more cholinergic innervation than the more lightly stained neuropils areas within the dorsal striatum.
...

References

SHOWING 1-10 OF 11 REFERENCES

The islands of calleja: Organization and connections

Observations indicate that the islands of Calleja constitute a unique population of granule cells, located in the olfactory tubercle, innervated by dopamine neurons of the mesencephalon and interconnected with Olfactory and non‐olfactory components of the basal forebrain.

Fine structure and synaptic connections of the common spiny neuron of the rat neostriatum: A study employing intracellular injection of horseradish peroxidase

Medium‐sized spiny neurons of the rat neostriatum, identified by intracellular injection of horseradish peroxidase, were examined at both light and electron microscopic levels. These neurons were

Ultrastructure of Golgi-impregnated and gold-toned spiny and aspiny neurons in the monkey neostriatum

Results offer unequivocal evidence for the differences in the ultrastructure of these two most common categories of medium-size neostriatal neurons, which may help in their proper identification in standard material, as well as information on the types and distributions of synaptic inputs onto these neurons.

The GABA Neurons and their axon terminals in rat corpus striatum as demonstrated by GAD immunocytochemistry

The presence of GAD within these terminals is consistent with results of other investigations which have indicated that the striatopallidal and striatoentopeduncular pathways as well as neostriatal local circuit neurons and/or collaterals from neostRIatal projection neurons, use GABA as a neurotransmitter.

Freeze-fracture studies on the synapse between the type I hair cell and the calyceal terminal in the guinea-pig vestibular system

The scarcity of chemical synaptic junctions, the absence of gap junctions between the cells and the unique arrangement of particles in the hair cell plasmalemma surrounding regions of close membrane apposition may indicate an unusual mode of synaptic transmission between the type I hair cell and the calyx.