Results: 10

Regional brain atrophy is related to social cognition impairment in multiple sclerosis

Arq. neuropsiquiatr; 79 (8), 2021
ABSTRACT Background: Multiple sclerosis exhibits specific neuropathological phenomena driving to both global and regional brain atrophy. At the clinical level, the disease is related to functional decline in cognitive domains as the working memory, processing speed, and verbal fluency. However, the comp...

Marcello Malpighi: the nervous system under a microscope

Arq. neuropsiquiatr; 79 (4), 2021
ABSTRACT The longstanding study of gross anatomy experienced a considerable improvement with the advent of the microscope in the early 17th century. The representative personality of this new era certainly was Marcello Malpighi, seen as "founder of microscopic anatomy". He studied, with a rudimentary com...

Gray matter atrophy in parkinsons disease and the parkinsonian variant of multiple system atrophy: a combined roi- and voxel-based morphometric study

Clinics; 75 (), 2020
OBJECTIVES: Parkinson's disease (PD) and the parkinsonian variant of multiple system atrophy (MSA-P) are distinct neurodegenerative disorders that share similar clinical features of parkinsonism. The morphological alterations of these diseases have yet to be understood. The purpose of this study was to e...

Differences in total brain volume between sexes in a cognitively unimpaired elderly population

Clinics; 75 (), 2020
OBJECTIVES: Although a large number of studies have shown brain volumetric differences between men and women, only a few investigations have analyzed brain tissue volumes in representative samples of the general elderly population. We investigated differences in gray matter (GM) volumes, white matter (WM...

Voxel-wise meta-analysis of structural changes in gray matter of Parkinsons disease patients with mild cognitive impairment

Braz. j. med. biol. res; 53 (6), 2020
Evidence from previous voxel-based morphometry (VBM) studies indicates that widespread brain regions are involved in Parkinson's disease with mild cognitive impairment (PD-MCI). However, the spatial localization reported for gray matter (GM) abnormalities is heterogeneous. The aim of the present study wa...

Morphological relationship between the superficial cortical and deep grey matter structures in adult human brains: a cadaveric study

Int. j. morphol; 37 (4), 2019
While various neurodegenerative diseases affect cortical mass differently, finding an optimal and accurate method for measuring the thickness and surface area of cerebral cortex remains a challenging problem due to highly convoluted surface of the cortex. We therefore investigated cortical thickness in a...

White matter volume is decreased in bipolar disorder at early and late stages

Abstract Introduction: Bipolar disorder (BD) is a debilitating mood condition that affects approximately 1.3% of people worldwide, although some studies report up to 3.9% lifetime prevalence and 4-6% in adults when broad diagnostic criteria are applied. Objective: To compare differences in total white ...

Effects of virtual reality therapy on upper limb function after stroke and the role of neuroimaging as a predictor of a better response

Arq. neuropsiquiatr; 76 (10), 2018
ABSTRACT Background: Virtual reality therapy (VRT) is an interactive intervention that induces neuroplasticity. The aim was to evaluate the effects of VRT associated with conventional rehabilitation for an upper limb after stroke, and the neuroimaging predictors of a better response to VRT. Methods: Pa...

Fisiopatología de la distonía
Pathophysiology of dystonia

Acta neurol. colomb; 33 (), 2017
La distonía es una entidad pobremente comprendida ya que a pesar que la era genómica ha proporcionado muchas pistas para la elucidación de los circuitos cerebrales responsables de este fenómeno, aún resta mucho por entender debido a que los modelos actuales son insuficientes para comprender a cabali...

Neural correlates of hallucinations in bipolar disorder

Objective: Approximately one-half of all patients affected by bipolar disorder present with psychotic features on at least one occasion. Several studies have found that alterations in the activity of mesolimbic and prefrontal regions are related to aberrant salience in psychotic patients. The aim of the ...