Bölüm & Birim & Kişi
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Browsing Bölüm & Birim & Kişi by Publisher "Elsevier Ireland Ltd, Elsevier House, Brookvale Plaza, East Park Shannon, Co, Clare, 00000, Ireland"
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Publication Event-Related Beta Oscillations Are Affected By Emotional Eliciting Stimuli(Elsevier Ireland Ltd, Elsevier House, Brookvale Plaza, East Park Shannon, Co, Clare, 00000, Ireland, 2010-10-15) Güntekin, Bahar; BAŞAR, EROL; TR204666; TR142226According to previous results, negative emotional facial expressions elicit oscillatory beta responses The present study analyzes event-related beta oscillations upon presentation of International Affective Picture System (IAPS) and aims to show whether behavior of beta in response to negative IAPS pictures also have similar dynamics IAPS pictures (unpleasant, pleasant, and neutral) were presented as a block and random passive viewing to 14 healthy subjects (8 male). Only with pictures with similar luminance level were selected as stimuli. Event-Related Potentials (ERPs) were recorded from 30 different scalp locations, and adaptive digital filtering was used for analysis in different frequency windows. The maximum peak-to-peak amplitudes were measured for each subject's averaged beta responses (15-30 Hz) in the 0 and 300 ms time window. Beta responses were significantly higher for unpleasant pictures than for pleasant and neutral pictures (average 50%). Beta responses were significantly higher for unpleasant than for pleasant pictures over frontal, central and parietal electrode sides (p < 0.05). Furthermore, beta responses were significantly higher for unpleasant than for neutral pictures over parietal and occipital electrodes (p < 0 04) In addition, the pleasant pictures elicited higher beta responses than neutral pictures over occipital electrode sites (p < 0 04) The results of the present study indicate that negative emotions are related to increased beta responses in humans, independent of stimulus types (facial expression or IAPS pictures) Accordingly, beta responses to negative emotions are possibly a common phenomenon The standardization of luminance in pictures may reduce divergences between results from different laboratories (C) 2010 Elsevier Ireland Ltd All rights reserved.Publication Prevalence and risk factors of depression among community dwelling elderly(Elsevier Ireland Ltd, Elsevier House, Brookvale Plaza, East Park Shannon, Co, Clare, 00000, Ireland, 2014) Yaka, Erdem; Keskinoğlu, Pembe; Uçku, Reyhan; Yener, Görsev; Tunca, Zeliha; 142538; 190994; 2062; 143760; 143327Depression in the elderly is associated with increased morbidity and mortality. The purpose of this study was to determine the prevalence and risk factors of depression among community-dwelling older population in an urban setting in Turkey. This cross-sectional study was conducted among 482 elderly individuals 65 years and over in an urban area. Cluster sampling method was used for sample size. Depression in the elderly had been diagnosed by a clinical interview and Geriatric Depression Scale. Data were collected by door-to-door survey. Chi square test was used for statistical analysis. P value, which was calculated by the results of chi square test and coefficient of phi (phi) below 0.05 was included in the analysis of logistic regression. Depression was significantly associated with female gender, being single or divorced, lower educational status, low income, unemployment, and lack of health insurance. However, logistic regression analysis revealed higher depression rates in the elderly with chronic obstructive pulmonary disease, psychiatric disease, cerebrovascular disease, low income and being dependent. Depression is common among community-dwelling older people in an urban area of Izmir, Turkey. Older adults living in community should be cautiously screened to prevent or manage depression. (C) 2014 Elsevier Ireland Ltd. All rights reserved.