Differential Effects of Lateralization-Task and Training on Low-Frequency EEG Oscillations in Upper- and Lower-Limb Amputees

DİLEK B., Zapała D., Augustynowicz P., Yildirim E., Szubielska M., GÜNTEKİN B., ...Daha Fazla

Psychological Reports, 2026 (SSCI, Scopus) identifier identifier

  • 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, Child Development & Adolescent Studies, Education Abstracts, Educational research abstracts (ERA), Gender Studies Database, MLA - Modern Language Association Database, Psycinfo, Public Affairs Index, Social Sciences Abstracts
  • 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
  • Trakya 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° vs. 180°). EEG was recorded before and after lateralization training. Accuracy was higher for stimuli presented at 0° than at 180° (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° 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.