Electrodermal reactivity to emotion processing in adults with autistic spectrum disorders

Area of Science:

• Neuroscience
• Psychology
• Autism Spectrum Disorder Research

Background:

• Alterations in emotion processing are a recognized feature of autism spectrum disorder (ASD).
• Previous research on emotion processing in ASD has yielded discrepant results, suggesting overt behavioral assessments may be insufficient.
• Covert emotional processes, assessed via physiological measures, require further investigation in ASD.

Purpose of the Study:

• To investigate covert emotional processing in adults with ASD using skin conductance response (SCR).
• To compare physiological and behavioral responses to emotional and non-emotional stimuli between individuals with ASD and neurotypical controls.

Main Methods:

• Utilized skin conductance response (SCR) to measure autonomic arousal.
• Compared behavioral accuracy and SCRs in 16 adults with ASD and 16 matched neurotypical adults.
• Participants performed tasks involving judging emotional facial expressions, face age, and object direction.

Main Results:

• Behavioral performance was comparable between ASD and control groups across all tasks.
• Individuals with ASD exhibited significantly lower SCRs than controls during the emotional judgment task.
• This suggests a difference in autonomic processing of emotional stimuli in ASD.

Conclusions:

• Adults with ASD may employ different cognitive strategies for emotion processing, linked to altered autonomic responses.
• Reduced physiological reactions to emotional faces in ASD could be associated with observed social impairments.
• Covert physiological measures like SCR offer valuable insights into the neurobiological underpinnings of ASD.