Perception in ambiguous environments relies on the combination of sensory information from various sources. Most associative and primary cortical areas are involved this multisensory active integration process. As a result, entire cortex appears as heavily multisensory. In review, we focus contribution pulvinar to integration. This subcortical thalamic nucleus plays central role visual detectio...

The expression of cellular prion protein in the central nervous system of normal cats and in cases of kainic acid injections into the mediodorsal thalamic nucleus were studied. Cellular prion protein immunodetection varied in a rostrocaudal direction: the protein was less abundant in the brainstem than in the prosencephalon. Especially abundant were the positive cells in the cerebral cortex. Th...

Short-survival, sequential, and long-survival thymidine radiograms of rat embryos, fetuses, and young pups were analyzed in order to examine the time of origin, settling pattern, and neuroepithelial site of origin of the anterior thalamic nuclei--the lateral dorsal (lateral anterior), anterodorsal, anteroventral and anteromedial nuclei--and of two rostral midline structures--the anterior parave...

BACKGROUND AND PURPOSE Corticothalamic networks are considered core pathologic substrates for idiopathic generalized epilepsy; however, the predominant epileptogenic epicenters within these networks are still largely unknown. The current study aims to identify these epicenters by resting-state functional connectivity. MATERIALS AND METHODS To identify epicenters within the corticothalamic net...

OBJECTIVE Neuroimaging evidence suggested that the thalamic nuclei may play different roles in the progress of idiopathic generalized epilepsy (IGE). This study aimed to demonstrate the alterations in morphometry and functional connectivity in the thalamic nuclei in IGE. METHODS Fifty-two patients with IGE characterized by generalized tonic-clonic seizures and 67 healthy controls were involve...

BACKGROUND AND PURPOSE MR imaging has the potential capacity for noninvasively depicting the anatomy and function of thalamic nuclei. The purpose of this study was to identify the lateral geniculate nucleus (LGN), which is the thalamic relay nucleus for vision, with anatomic and functional MR imaging at 1.5 T. METHODS Three-millimeter-thick axial images were obtained from eight volunteers by ...

The major pathway for visual information reaching cerebral cortex is through the lateral geniculate nucleus (LGN) of the thalamus. Acting on this vital relay is another thalamic nucleus, the thalamic reticular nucleus (TRN). This nucleus receives topographically organized collaterals from both thalamus and cortex and sends similarly organized projections back to thalamus. The inputs to the TRN ...

BACKGROUND Mediodorsal (MD) thalamic nucleus, which is considered to take place between extra pyramidal and limbic feedback circuit, receives projective fibers from ventrolateral neurons of reticular part of substantia nigra (SNr). In order to better understand the influence and chemical reaction of these fibers upon MD nucleus, the morphology and synaptology of them were examined in the presen...

There is a strong correlation between the behavior of an animal and the firing mode (burst or tonic) of thalamic relay neurons. Certain differences between first- and higher-order thalamic relays (which relay peripheral information to the cortex versus information from one cortical area to another, respectively) suggest that more bursting might occur in the higher-order relays. Accordingly, we ...