Differential Effects of Lateralization-Task and Training on Low-Frequency EEG Oscillations in Upper- and Lower-Limb Amputees
PSYCHOLOGICAL REPORTS, 2026 (SSCI, Scopus)
- Yayın Türü: Makale / Tam Makale
- Basım Tarihi: 2026
- Doi Numarası: 10.1177/00332941261423126
- Dergi Adı: PSYCHOLOGICAL REPORTS
- Derginin Tarandığı İndeksler: Social Sciences Citation Index (SSCI), Scopus, Periodicals Index Online, ATLA Religion Database, Child Development & Adolescent Studies, EBSCO Education Source, Education Abstracts, Educational research abstracts (ERA), EMBASE, Gender Studies Database, MEDLINE, MLA - Modern Language Association Database, Psycinfo, Public Affairs Index, MLA International Bibliography, Social Sciences Abstracts, Academic Search Ultimate (EBSCO), Biomedical Reference Collection: Corporate Edition (EBSCO), Business Source Ultimate (EBSCO), Education Source Ultimate (EBSCO), Health Research Premium Collection (ProQuest), Sociology Source Ultimate (EBSCO)
- Anahtar Kelimeler: decision making < intelligence < mental & physical Health, rehabilitation < disability < disability & trauma, self-perceptions < social perceptions < mental & physical health, spatial ability < intelligence < mental & physical health, theory of mind < social perceptions < mental & physical health
- Gazi Üniversitesi Adresli: Evet
Özet
Amputation may disrupt body schema through impairments in attentional mechanisms within the central nervous system. This study examined behavioral performance and low-frequency oscillatory (LFO) activity in individuals with upper-limb amputations (ULA), lower-limb amputations (LLA), and healthy controls (HC). Participants included six ULA (5 Male, 1 Female), nine LLA (7 Male, 2 Female), and eleven HC (8 Male, 3 Female). During electroencephalography (EEG) recording, participants performed a hand laterality task with stimuli varying in laterality (right vs. left) and angular orientation (0 degrees vs. 180 degrees). EEG was recorded before and after lateralization training. Accuracy was higher for stimuli presented at 0 degrees than at 180 degrees (p < .05), and overall accuracy significantly improved following training (p < .001). ULA exhibited slower reaction times than LLA (p < .05). EEG results showed a greater increase in delta (1.5-3 Hz) power in ULA compared with HC (p < .05). Right-hand stimuli and those presented at 0 degrees modulated delta phase responses (p < .05). Increased theta (4-7 Hz) power and phase responses after training suggest enhanced oscillatory entrainment through attentional engagement (p < .05). Overall, behavioral and electrophysiological findings provide insight into bodily attention mechanisms in amputees and have implications for neurorehabilitation. Future studies with larger and more homogeneous samples are needed to improve generalizability and clarify underlying mechanisms.