Excessive α-ß Oscillations Mark Enlarged Motor Sign Severity and Parkinson's Disease Duration.
Mov Disord
; 38(6): 1027-1035, 2023 06.
Article
em En
| MEDLINE
| ID: mdl-37025075
ABSTRACT
BACKGROUND:
ß Oscillations in the subthalamic nucleus (STN) have been proven to contribute to Parkinson's disease (PD), but the exact borders of ß subbands vary substantially across the studies, and information regarding heterogeneity of ß rhythmic activity is still limited. Recently, α oscillations in the basal ganglia have also become the focus of PD research.OBJECTIVES:
The aim was to study rhythmic oscillations in the STN in PD patients to identify different subbands with stable oscillatory peaks within a broad α-ß range and to establish their associations with motor symptoms.METHODS:
Local field potentials inside the STN were recorded during deep brain stimulation (DBS) surgeries. After calculating power spectra and extracting an aperiodic component, oscillatory peaks in the 8- to 35-Hz range with amplitude exceeding 90th percentile were clustered into three bands. Peak parameters were estimated for two lower subbands. Clinical features were compared in patients with and without oscillation peaks in the lowest α-ß subband.RESULTS:
We isolated α-ß (8-15 Hz), ß (15-25 Hz), and ß-γ (25-35 Hz) subbands within the 8- to 35-Hz spectral range using oscillatory parameters and Ward's hierarchical clustering. Additional α-ß oscillatory peaks were found in about half of patients with ß peaks; they were located more ventrally compared to ß. We have found a significant increase in disease duration, bradykinesia, and rigidity scores in the group with additional α-ß peaks.CONCLUSIONS:
Increased α-ß oscillations may emerge as additional phenomena complementing ß oscillations; they may mark disease progression in PD and affect DBS stimulation setup. © 2023 International Parkinson and Movement Disorder Society.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Doença de Parkinson
/
Núcleo Subtalâmico
/
Estimulação Encefálica Profunda
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
Mov Disord
Assunto da revista:
NEUROLOGIA
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Federação Russa