Related Experiment Video
Updated: Aug 7, 2026
08:31
Conscious and Non-conscious Representations of Emotional Faces in Asperger's Syndrome
Published on: July 31, 2016
The amygdala and autism: implications from non-human primate studies
D G Amaral1, M D Bauman, C Mills Schumann
1Department of Psychiatry and Behavioral Sciences and Center for Neuroscience, The M.I.N.D. Institute, University of California at Davis, Davis, CA 95817, USA. dgamaral@ucdavis.edu
Genes, Brain, and Behavior
|November 11, 2003
Summary
The amygdala may not be the primary cause of social deficits in autism. Instead, amygdala dysfunction might explain abnormal fears and anxiety, which are common in autism.
Area of Science:
- Neuroscience
- Behavioral Neuroscience
- Developmental Neuroscience
Background:
- The amygdala has been proposed as a key component of social behavior networks.
- Neuropathology in the autistic brain's amygdala has been observed.
- Dysfunction of the amygdala has been hypothesized to contribute to social impairments in autism.
Purpose of the Study:
- To investigate the role of the amygdala in social behavior using non-human primate models.
- To re-evaluate the amygdala's contribution to autism-related social deficits.
Main Methods:
- Lesion studies in adult and infant macaque monkeys.
- Analysis of behavioral responses to fear-inducing stimuli and novel social interactions.
Main Results:
- Amygdala lesions did not fundamentally impair social behavior in macaque monkeys.
- Damage to the amygdala affected responses to fear stimuli and interaction with novel conspecifics.
- The amygdala appears crucial for threat detection and fear responses.
Conclusions:
- The amygdala may not be the primary cause of impaired social behavior in autism.
- Amygdala dysfunction in autism may contribute to abnormal fears and anxiety.
- The amygdala's role in threat detection and fear response is significant.
Related Concept Videos
01:16Role of Amygdala in Memory
The amygdala is a small, almond-shaped structure responsible for processing and storing memories, particularly those linked to emotions like fear and stress. It plays an essential role in the brain's response to emotionally significant events and often enhances memory formation by triggering stress hormone release. The amygdala is vital for encoding and retrieving memories associated with fear or stress, a process that is adaptive by helping organisms avoid dangerous situations.
One of the...
One of the...
01:19Autism Spectrum Disorder
Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.