BACKGROUND AND PURPOSE McLeod neuroacanthocytosis syndrome (MLS) is an X-linked multisystem disorder with CNS manifestations resembling Huntington disease. Neuroimaging studies revealed striatal atrophy with predominance of the caudate nucleus. Our previous cross-sectional MRI study showed an association of volume loss in the caudate nucleus and putamen with the disease duration. METHODS In t...

The effects of somatostatin on the release of tritiated dopamine (DA) formed continuously from tritiated tyrosine were studied in vitro in superfused striatal slices and in vivo in both caudate nuclei and both substantiae nigrae of halothane-anesthetized cats using a push-pull cannula technique. Somatostatin (3 X 10(-10) to 3 X 10(-7) M) increased the spontaneous tritiated dopamine release from...

UNLABELLED The basal ganglia involve in a range of functions that are disturbed in schizophrenia patients. This study decomposed the resting-state data of 28 schizophrenia patients and 31 healthy controls with spatial independent component analysis and identified increased functional integration in the bilateral caudate nucleus in schizophrenia patients. Further, the caudate nucleus in patients...

The hippocampus and caudate nucleus are anatomical components of relatively independent memory systems and recent research has focused on the nature of the interaction between these two systems. The amygdala exerts a general modulatory influence on memory storage processes related, in part, to an organism's level of affective or emotional arousal. Moreover, affective state can influence the use...

time 1 may be because of our relatively small sample sizes or because the intrinsic group differences are hidden by the enlarging effect on the caudate nucleus with even a short period of neuroleptic exposure, and or of lithium. In future analyses, follow-up measures in this FE sample of SZ and psychotic affective subjects at MRI scan, time 2, will be of further interest to characterize more fu...

The primate brain has the remarkable ability of mapping sensory stimuli into motor behaviors that can lead to positive outcomes. We have previously shown that during the reinforcement of visual-motor behavior, activity in the caudate nucleus is correlated with the rate of learning. Moreover, phasic microstimulation in the caudate during the reinforcement period was shown to enhance associative ...

The value assigned to aversive events is susceptible to contextual influences. Here, we asked whether a change in the valuation of negative events is reflected in an altered neuronal representation of their expected aversive outcome. We show that experiencing an aversive event in the past, and choosing to experience it in the future, reduces its aversive value. This psychological change is mirr...

Studies on volumetric brain Magnetic Resonance Imaging (MRI) showed neuroanatomical abnormalities in pediatric Attention Deficit Hyperactivity Disorder (ADHD). In particular, the diminished right caudate volume is one of the most replicated findings among ADHD samples in morphometric MRI studies. In this paper, we propose a fullyautomatic method for internal caudate nucleus segmentation based o...

The neurochemical evidence of methamphetamine (MA)-induced toxicity to dopaminergic nerve terminals is well documented; however, the functional consequences are not clearly defined. The present study was designed to investigate whether MA-induced dopamine depletions affect locomotor activity, stereotypic behavior, and/or extracellular dopamine concentrations in the neostriatum. Male rats were t...