בחינת ההשפעה של מסיחים מעוררי רגש על תגובות אוטונומיות וביצוע משימה בסביבה מדומה בילדים עם וללא שיתוק מוחין
MPACT OF EMOTIONAL DISTRACTERS ON AUTONOMIC RESPONSES AND TASK PERFORMANCE IN A VIRTUAL ENVIRONMENT BY CHILDREN WITH AND WITHOUT CEREBRAL PALSY
sharon Kirshner1, Tamar (P L) Weiss2,Emanuel Tirosh3,4
שרון קירשנר, תמר וייס, עמנואל תירוש
1HaEmek Medical Center, Afula
,2 Department of Occupational Therapy, University of Haifa,Mount Carmel, Haifa
3 Faculty of Medicine, Technion- Israel Institute of Technology,Haifa
4The Child Development Center, Bnai-Zion Medical Center,Haifa
Background: This study examined whether a functional virtual environment (VE) may be used to provide affective stimuli that affect autonomic responses and task performance of children with and without cerebral palsy (CP).
Materials & Methods: Fifteen children with CP and 19 typically developing peers (6-12 years) participated. After completing behavioral questionnaires (e.g., State and Trait Anxiety Inventory), children prepared virtual meals within a video-capture, virtual meal-making VE; either a negative, positive, or neutral visual stimulus was displayed. Children also passively viewed the same pictures while rating their valence and arousal levels. Heart rate (HR) and skin conductance (SCR) were recorded synchronously with stimulus onset.
Results: Significant differences were found between groups in task performance and heart rate variability (HRV); higher “low frequency” to “high frequency” (LF:HF) ratio in children with CP compared to controls during the meals associated with a negative stimulus (U= 59.00, p= 0.011). Only children with CP had significant positive correlations between trait anxiety and LF:HF ratio during virtual meal-making associated with positive (Rs=0.534, p=0.049) and negative stimuli (Rs=0.732, p=0.003) but not during neutral stimuli. For children with CP the amplitude of SCR during passive picture viewing was significantly higher for negative than for positive stimuli (p= 0.017) but there were no significant changes in autonomic responses during virtual meal-making task.
Conclusions: This VE appears to be a feasible platform for investigation of differences in autonomic responses between children with and without CP.