Medicina Fluminensis, Vol. 47 No. 3, 2011.
Izvorni znanstveni članak
Spectrum-weighted EEG frequency as an indicator of mental arousal in patients with anorexia
Aneta Demerdzieva
; Department for Psychophysiology, Pediatric Clinic, Faculty of Medicine, Skopje, Republic of Macedonia
Nada Pop-Jordanova
; Department for Psychophysiology, Pediatric Clinic, Faculty of Medicine, Skopje, Republic of Macedonia
Sažetak
Aim: Anorexia is characterized by weight loss leading to a body weight of at least 15% below the normal. The aim of this study was to analyze the spectrum weighted frequency-
fb (brain rate) as an indicator of general mental arousal in anorectics and to compare
the results with healthy preadolescents of the same age and gender. Methods: The diagnosis
was made according to two statistic manuals (DMS-IV-R and ICD-10), medical history, neuropsychological assessment, biochemical analysis and quantitative electroencephalography.
Results from spectra power for four conditions (eyes closed, eyes open, visual
continuous performance test – VCPT and auditory continuous performance test – ACPT) were exported to brain rate software. Results and Discussion: Using factorial ANOVA we found that there is a strong statistical significance between results of brain rate for control group of healthy subjects vs. observed anorectic group (p<0.001). The post hoc Bonferroni test (summary of significant difference of groups) showed that only the fb values for central region are statistically significant. The post hoc analysis regarding condition found a significant
difference in fb values for EC vs. EO and EC vs. ACPT for posterior region and for EC vs. VCPT for frontal region (all p<0.05). Conclusions: Brain rate – fb is a good indicator for general
mental activity but, further investigations are needed in order to add fb as an indicator of mental arousal in assessment of mental diseases in childhood.
Ključne riječi
anorexia; QEEG; spectrum weighted frequency – fb (brain rate)
Hrčak ID:
71757
URI
Datum izdavanja:
5.9.2011.
Posjeta: 2.226 *