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

  title={Granule cells of the olfactory tubercle and the question of the islands of calleja},
  author={O. Eugene Millhouse},
  journal={Journal of Comparative Neurology},
  • O. E. Millhouse
  • Published 1 November 1987
  • Biology
  • Journal of Comparative Neurology
The granule cell clusters in the rat olfactory tubercle were studied in Nissl‐stained and Golgi‐impregnated sections. Discrete cell clusters that vary in size and shape occur mainly in the multiform layer and less often in the molecular layer. In cell‐stained sections they consist of small, round granule cells, 5–8 μm in diameter, that often surround a core or hilar area, which may contain larger neurons. In Golgi sections, the uni‐ or bipolar granule cells have a globular‐shaped soma and… 

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.

Feline islands of calleja complex: I. Cytoarchitectural organization and comparative anatomy

Cytoarchitectural analyses demonstrated that the islands of Calleja complex (ICC) is highly developed and discretely organized in the cat. The feline complex is clearly divided into morphological

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.

Cyto- and Chemoarchitecture of the Monotreme Olfactory Tubercle

  • K. Ashwell
  • Biology
    Brain, Behavior and Evolution
  • 2006
The small olfactory tubercle region in the platypus is consistent with poor olfaction in that aquatic mammal, but the tubercle in the echidna is more like that of a microsmatic mammal than other placentals occupying a similar niche.

Feline islands of calleja complex: II. Cholinergic and cholinesterasic features

Histochemical analyses demonstrated that the islands of Calleja complex (ICC) in the cat is exceptionally rich in choline acetyltransferase (ChAT) and acetylcholinesterase (AChE), suggesting that the strong cholinergic innervation of the feline ICC is at least partially derived from satellite cells.

Ventral striatal Islands of Calleja neurons control grooming in mice

It is shown that optogenetic activation of OT D3 neurons robustly initiates self-grooming in mice while suppressing other ongoing behaviors, and has important implications for the neural control of grooming.

Efferent connections of the nucleus of the lateral olfactory tract in the rat

The efferent connections of the nucleus of the lateral olfactory tract (LOT) were examined in the rat with the Phaseolus vulgaris leucoagglutinin (PHA‐L) technique. Our observations reveal that



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.

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

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

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.

The structure of the nucleus of the lateral olfactory tract

It is suggested that the NLOT may have a significant role in localizing olfactory stimuli to one side of the midline and correlate the Golgi data about NLOT afferents and efferents with the results obtained by other investigators who have used experimental tract‐tracing methods.

A Golgi and ultrastructural study of the monkey globus pallidus

Golgi preparations reveal that the most frequent type of pallidal neuron (principal cell), which has been recognized in all previous reports, is large (20–50 (Am)), fusiform, with dendrites up to 700

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

A Golgi analysis of the primate globus pallidus. I. Inconstant processes of large neurons, other neuronal types, and afferent axons

Two neuronal types other than large pallidal neurons were isolated: the smallest were considered to be local circuit neurons, while intermediate‐sized neurons might be the origin of a particular efference.

The hypothalamic suprachiasmatic nucleus of rat: Intrinsic anatomy

The internal structure of the suprachiasmatic nucleus (SCN) was studied qualitatively and quantitatively in several hundred rat brains with a variety of methods including several types of Golgi