introduction: the claustrum interconnects with the allocortical and neocortical regions and also projects to the hippocampus and the amygdala. .the role of claustrum in the complex partial seizure is not clear. thus in this study the effect of amygdala lesion on anterior claustrum kindled seizures in rat were investigated. methods: male wistar rats, weighting 250-300 g, were received dc current...

Introduction: The claustrum interconnects with the allocortical and neocortical regions and also projects to the hippocampus and the amygdala. .The role of claustrum in the complex partial seizure is not clear. Thus in this study the effect of amygdala lesion on anterior claustrum kindled seizures in rat were investigated. Methods: Male Wistar rats, weighting 250-300 g, were received DC curren...

The claustrum has been implicated in the kindling of generalized seizures from limbic sites. We examined the susceptibility of the anterior claustrum itself to kindling and correlated this with an anatomical investigation of its afferent and efferent connections. Electrical stimulation of the anterior claustrum resulted in a pattern of rapid kindling with two distinct phases. Early kindling inv...

In 28 cats after injections of HRP solution (0.20-0.50 mikrol) to the claustrum from the lateral side or from above, large numbers of HRP labeled cells were found in the anterior pretectal nuclei. This concerned the anterior compact nucleus more than the anterior reticular. This type of labeling was not observed after injections of HRP to the cerebral cortex and striatum. The results speak in f...

The claustrum is a surprisingly large, sheet-like neuronal structure hidden beneath the inner surface of the neocortex. We found that the portions of the claustrum connected with V4 appear to overlap considerably with those portions connected with other cortical visual areas, including V1, V2, MT, MST and FST, TEO and TE. We found extensive reciprocal connections between V4 and the ventral port...

The insular claustrum of the cat was studied using Kopsch modification of the Golgi technique. Neurons with or without dendritic spines were found. Among spiny neurons large pyramid-like cells with one main dendrite (S I type) appeared most frequently. Spindle-shaped neurons with two main dendrites (S II type) and multipolar ones (S III type) occurred much less frequently. Two types of aspimny ...

The claustrum, a subcortical telencephalic structure, is known to be reciprocally interconnected to almost all cortical regions; however, a systematic analysis of claustrocortical connectivity with physiologically identified lower and higher order visual cortical areas has not been undertaken. In the current study we used biotinylated dextran amine to trace the connections of the ferret claustr...

Discrete populations of brain cells signal differing types of spatial information. These "spatial cells" are largely confined to a closely-connected network of sites. We describe here, for the first time, cells in the anterior claustrum of the freely-moving rat encoding place, boundary and object information. This novel claustral spatial signal potentially directly modulates a wide variety of a...

The claustrum is an intriguing brain structure, featuring the highest connectivity per regional volume in the brain. It is a thin and elongated structure enclosed between the striatum and the insular cortex, with widespread reciprocal connections with the sensory modalities and prefrontal cortices. Retinotopic and somatotopic organizations have been described in the claustrum, and anatomical st...