Functional activity of the brain depending on the degree of severity occupational noise-induced hearing loss

Abstract

Thresholds of acoustical sensitivity, levels of perception of shepotny, informal conversation, UPP, characteristic of SSVP, neuropsychological features at 45 patients with easy degree of PNST (LONIHL) and at 50 - with moderate degree of ONIHL (UONIHL) are studied. LCP in the left frontal (Fs), central dark (Pz) leads increased in persons with ONIHL, and the inter-peak interval of the N13-N20 characterizing the central conduct time increased. The FAB, unlike the LONIHL, is characterized by deterioration of cognitive activity in the form of easily pronounced decrease of visual memory functions, expressive speech, FAB scale value indicating priority dysfunction of frontal, dark-occipital lobes, subcortical cerebral structures. Neurofunctional markers in UONIHL are the reduction of the indicators of the interfamily relations on the frontal department, conceptual thinking, visual image memory, expressive speech, MMSE and FAB tests, the increase of LCP in the left temporal, central dark, occipital right central N13-N20, inter-peak N25.