Abstract
INTRODUCTION: A recent study showed hypoactivity in the beta/gamma band in female suicide ideators and suicide attempters diagnosed with depression, relative to a low-risk group. The current study aimed to conceptually replicate these results.
METHODS: In the iSPOT-D sample (n = 402), suicide ideators and low-risk individuals were identified. Confining analyses to females only, differences between low-risk individuals and suicide ideators were tested for using the electroencephalogram (EEG) frequency bands SMR (Sensori-Motor-Rhythm; 12-15 Hz), beta (14.5-30 Hz), beta I (14.5-20 Hz), beta II (20-25 Hz), beta III (25-30 Hz), gamma I (31-49 Hz) using LORETA-software.
RESULTS: None of the tested frequency bands showed to be significantly different between suicide ideators and low-risk individuals.
CONCLUSIONS: The current study could not conceptually replicate the earlier published results. Several reasons could explain this non-replication, among which possible electromyographic (EMG) contamination in the beta/gamma band in the original study.
TRIAL REGISTRATION: ClinicalTrials.gov identifier: NCT00693849 URL: http://clinicaltrials.gov/ct2/show/NCT00693849.
Original language | English |
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Article number | 108058 |
Number of pages | 4 |
Journal | Biological Psychology |
Volume | 161 |
Early online date | 26 Feb 2021 |
DOIs | |
Publication status | Published - Apr 2021 |
Keywords
- Suicide
- Electroencephalogram (EEG)
- Replication
- PREDICT OPTIMIZED TREATMENT
- HIGH-FREQUENCY
- ISPOT-D
- IDEATION
- OSCILLATIONS
- ANTAGONISTS
- POWER
- ADHD