title: [Functional brain activity in patients with Parkinson's disease during amantadin-sulfate therapy].
abstract: An investigation of bioelectrical brain activity in 32 patients with akinetic-rigid and trembling-rigid forms of Parkinson's disease was conducted before and after treatment with amantadin-sulfate on the basis of spectral-coherent EEG analysis. Comparing to controls, EEG deviations, mainly related to the main rhythm, were observed in 93.75% patients. Symptoms stabilization augmented EEG disorganization emerging in diffused spikes and sharp theta- and alpha-waves. The presence of paroxysmal activity in the form of synchronic bilateral groups of theta-waves and/or beta-waves was detected in 11 out of 32 patients, with paroxysmal activity of theta-waves being more evident in patients with a trembling PD form. In the group of patients with post treatment positive dynamics, EEG spectrum power increased in the range of alpha-beta-waves. Significant differences were mainly found in the range of beta-activity in frontal-parietal-occipital leads of the left hemisphere. The coherent analysis of EEG revealed that an amantadin-sulfate course resulted in normalization of space organization of biopotentials at the expense of a decrease of pathologically high indications of coherency for the majority of intra- and interhemisphere pairs of leads in alpha-, beta- and theta-ranges. In those regions, where the spectrum power increased in the same range, a significant decrease of the coherency indices was detected for inter hemispheric frontal-frontal, frontal-parietal and frontal-occipital leads and intracortical long connections of the left hemisphere. In amantadin-sulfate non-responders, the changes of EEG spectrum and coherency were insignificant.
authors.forename: R K
authors.initials: RK
authors.lastname: Arakelian
authors.forename: L N
authors.initials: LN
authors.lastname: Nerobkova
authors.forename: E A
authors.initials: EA
authors.lastname: Katunina
authors.forename: E A
authors.initials: EA
authors.lastname: Val'dman
authors.forename: I G
authors.initials: IG
authors.lastname: Kapitsa
authors.forename: T A
authors.initials: TA
authors.lastname: Voronina
authors.forename: G N
authors.initials: GN
authors.lastname: Avakian
authors.forename: E I
authors.initials: EI
authors.lastname: Gusev
mesh_terms: D000328:Adult; D000368:Aged; D000547:Amantadine / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use*; D000978:Antiparkinson Agents / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use*; D001921:Brain / Q000187:drug effects* / Q000503:physiopathology*; D004569:Electroencephalography / Q000187:drug effects*; D005260:Female; D007839:Functional Laterality / Q000187:drug effects; D006801:Humans; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000175:diagnosis / Q000188:drug therapy* / Q000503:physiopathology*; D012720:Severity of Illness Index
chemical_list: D000978:Antiparkinson Agents; D000547:Amantadine