Identification of degenerated synaptic boutons in the dorsal claustrum of the cat after electrolytic lesions of the intralaminar thalamic nuclei.

The aim of this study is to investigate whether the dorsal claustrum receives afferent input from the intralaminar thalamic nuclei - centromedian nucleus, central lateral nucleus and paracentral nucleus. The intralaminar thalamic nuclei of eight cats were electrolytically lesioned. We obtained samples from the dorsal claustrum for electron microscopic analysis from the second to the seventh post-procedural day.

Cytoarchitecture of the dorsal claustrum of the cat: a quantitative Golgi study.

The claustrum is a subcortical nucleus, found in the telencephalon of all placental mammals. Earlier Golgi studies have mostly focused on a qualitative description of the types of neurons. The aim of the present study was to describe the types of neurons found in the dorsal claustrum of the cat using the Golgi impregnation method and to perform a quantitative analysis of the following morphometric parameters: number of terminals (ends), total dendritic length, dendritic complexity, spine density (in spiny projection neurons), varicosity density (in aspiny interneurons).

Ultrastructure of the dorsal claustrum in cat. II. Synaptic organization.

The claustrum is a bilateral subcortical nucleus situated between the insular cortex and the striatum in the brain of all mammals. It consists of two embryologically distinct subdivisions - dorsal and ventral claustrum. The claustrum has high connectivity with various areas of the cortex, subcortical and allocortical structures.

A Comparative Quantitative Analysis of the Postnatal Changes in the Myocardium of the Left and Right Ventricles in Rats.

Background: The growth of the heart during the foetal and early postnatal development takes places mainly due to hyperplasia. The late postnatal development is characterised by cardiomyocytic hypertrophy in response to normal physiological mechanisms and increased load. To study the cell size most authors measure the diameter either directly or indirectly.

Electron microscopic study of Golgi-impregnated and gold-toned neurons and fibers in the claustrum of the cat.

The claustrum is a subcortical nucleus found in the telencephalon of all placental mammals. It is a symmetrical, thin and irregular sheet of grey matter which lies between the inner surface of the insular cortex and the outer surface of the putamen. The claustrum has extensive connections with the visual, auditory, somatosensory and motor regions of the cortex, as well as with subcortical and allocortical regions.