نتایج جستجو برای: caudate nucleus
تعداد نتایج: 114793 فیلتر نتایج به سال:
One of the most consistently reported brain regions of structural and functional difference in attention deficit hyperactivity disorder (ADHD) is the basal ganglia, particularly the caudate nucleus. Examining the structural organization of the basal ganglia in ADHD is important because it is the center of wider fronto-striatal networks, reported to be dysfunctional in ADHD. Fifteen right-handed...
Adults have difficulty discriminating nonnative phonetic contrasts, but under certain circumstances training can lead to improvement in this ability. Despite the ubiquitous use of performance feedback in training paradigms in this and many other domains, the mechanisms by which feedback affects learning are not well understood. In this event-related functional magnetic resonance imaging study, ...
Effects of mid-dorsal caudate nucleus on sensorimotor changes were studied in rats. After electrolytic lesion of this area of brain there was impairment in sensory functions and decline in motor component was observed to be statistically significant.
A single-nucleotide polymorphism (SNP) of the DRD3 gene (rs167771) was recently associated with autism spectrum disorders (ASD). Different polymorphisms of rs167771 corresponded to varying degrees of stereotyped behaviour. As DRD3 receptors are relatively overexpressed in the striatum, we investigated whether striatal volume was related to these polymorphisms in autism. We assessed volumes of c...
In 11 normal volunteers and six patients with Parkinson's disease, we compared six different analyses of dopaminergic function with L-3,4-dihydroxy-6-[18F]fluorophenylalanine (FDOPA) and positron emission tomography (PET). The caudate nucleus, putamen, and several reference regions were identified in PET images, using magnetic resonance imaging (MRI). The six analyses included two direct determ...
Sir, We thank Dr Morishita and colleagues (2014) for their interest and valuable contribution. Many studies report a slight decline in cognitive functioning after subthalamic nucleus (STN) stimulation for Parkinson’s disease (Parsons et al., 2006; Witt et al., 2008). The observed neuropsychological sequelae are likely caused by several independent factors: first, there is a patient-inherent ris...
Transient memory impairment can be occurred by many causes. One of them is acute focal brain lesion in strategic site. Caudate nucleus and medial basal ganglia (globus pallidus) are lesion of strategic site. They play its role in cognitive processing. But lateral basal ganglia (putamen) is known as a structure involving movement, not cognitive function. We report a interesting case of transient...
Bipolar disorder (BD) is a common, complex psychiatric illness characterised by extremes of mood and disordered thinking. Evidence from structural MRI implicates subtle grey matter abnormalities in BD in brain regions involved in affective regulation and executive function. However such studies are often underpowered with highly heterogeneous patient populations [1]. An important yet often negl...

 In present study, a reference based technique has been proposed to segment mid- brain structures in 3D Magnetic Resonance (MR) images using multi-resolution non-rigid registration. The scheme segmented the mid-brain two stages. During first stage, target image was registered an already while second segmentation information mapped from medical image. Using this scheme, aim nine including ...
Abstract Obsessive-compulsive disorder (OCD) is a chronic and severe psychiatric for which effective treatment options are limited. Structural functional neuroimaging studies have consistently implicated the orbitofrontal cortex (OFC) striatum in pathophysiology of disorder. Recent genetic evidence points to involvement components excitatory synapse etiology OCD. However, transcriptional altera...
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