The form of the structural asymmetries across the cerebral hemispheres, that support well-established functional asymmetries, are not well understood. Although, many previous studies have investigated structural differences in areas associated with strong functional asymmetries, such as language processes, regions of the brain with less well established functional laterality have received less ...

The degree of white matter (WM) myelination is rather inhomogeneous across the brain. White matter appears differently across the cortical lobes in MR images acquired during early postnatal development. Specifically at 1-year of age, the gray/white matter contrast of MR T1 and T2 weighted images in prefrontal and temporal lobes is reduced as compared to the rest of the brain, and thus, tissue s...

Objective: The deficit of male orgasm is an unusual clinical condition. This is a case report on secondary male anorgasmia with cerebral infarction. Material and Method: The patient was a 55-year-old man who had suffered from male anorgasmia, acquired type. The patient had a normal erectile response, but ejaculated without any sensation of orgasm. The patient underwent an evaluation by a psychi...

This article discusses the potential usefulness of brain/ behavior correlational analyses in functional neuroimaging studies of memory, and how such analyses can illuminate the role of medial temporal lobes (MTL) and the hippocampus in episodic and declarative memory processes such as encoding and retrieval. Reanalysis of the results of four previously reported positron emission tomography (PET...

BACKGROUND Dementia is common in Parkinson's disease, but the underlying brain pathology is not yet fully understood. AIM To examine the changes in the brain of patients with Parkinson's disease with mild cognitive impairment (MCI) and dementia, using structural magnetic resonance imaging. METHODS Using voxel-based morphometry, the grey matter atrophy on brain images of patients with Parkin...

Abstract. The increasing use of digital technology among adolescents and young adults has led to concerns about possible detrimental effects on cognitive brain functions. Indeed, as reviewed here, according behavioral brain-imaging studies, excessive media multitasking (i.e., using different in parallel) may lead enhanced distractibility problems maintaining attention. However, frequent video g...

Chess is a game that involves many aspects of high level cognition and requires sophisticated problem solving skills. However, there is little understanding of the neural basis of chess cognition. This study employed functional magnetic resonance imaging (fMRI) to identify cortical areas that are active during the analysis of chess positions compared with a spatial task with matched visual stim...

The role of the human frontal lobes (and predominantly their mediobasal parts) in regulation of the two types of unspecific activation was studied. These types were: fast orienting reactions and slow changes in levels of vigilance. 92 normal persons and 202 patients with lesions of the frontal lobes and other regions of the brain were observed. As indicators for the fast kind of activation we u...

We analyzed topology of brain functional networks in type 2 diabetes mellitus (T2DM) patients without mild cognitive impairment. We recruited T2DM patients without mild cognitive impairment (4 males and 8 females) and healthy control subjects (8 males and 16 females) to undergo cognitive testing and resting-state functional magnetic resonance imaging. Graph theoretical analysis of functional br...