Neural mechanisms of two different verbal working memory tasks: A VLSM study.

Currently, a distributed bilateral network of frontal-parietal areas is regarded as the neural substrate of working memory (WM), with the verbal WM network being more left-lateralized. This conclusion is based primarily on functional magnetic resonance imaging (fMRI) data that provides correlational evidence for brain regions involved in a task. However, fMRI cannot differentiate the areas that are fundamentally required for performing a task.

[Brain mapping in verbal and spatial thinking].

The goal of this study was to describe the topography of the active cortical areas and subcortical structuresin verbal and spatial thinking. The method of functional magnetic resonance imaging (fMRI) was used. 18 right-handed subjects participated in the study.

[FMRI-study of speech perception impairment in post-stroke patients with sensory aphasia].

The aim of the study was to find neurophysiological correlates of the primary stage impairment of speech perception, namely phonemic discrimination, in patients with sensory aphasia after acute ischemic stroke in the left hemisphere by noninvasive method of fMRI. For this purpose we registered the fMRI-equivalent of mismatch negativity (MMN) in response to the speech phonemes--syllables "ba" and "pa" in odd-ball paradigm in 20 healthy subjects and 23 patients with post-stroke sensory aphasia. In healthy subjects active brain areas depending from the MMN contrast were observed in the superior temporal and inferior frontal gyri in the right and left hemispheres.

[Postoperative computerized tomography of thoracic organs in lung cancer patients].

The report discusses the data on the complex radiation examination of 40 lung cancer patients at different stages of postoperative follow-up. Standard X-ray procedures and CT of thoracic organs were carried out. Considerable advantages offered by CT were recorded in the assessment of the pleural cavity, the remaining part of the lung and mediastinal organs.

[Thoracic computed tomography after surgical interventions on the lung].

The paper based on the analysis of computed tomographic data in 40 patients again underlines the importance of accurate and timely diagnosis of thoracic changes in the postoperative period. It shows that CT can provide information on thoracic organs and parts and presents the tomographic pattern of a postoperative uncomplicated period.