Beta oscillations precede joint attention and correlate with mentalization in typical development and autism
Patricia Soto-Icaza1, Lorena Vargas2, Francisco Aboitiz1
1Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Centro Interdisciplinario de Neurociencias, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.
Summary
Joint attention (JA) and mentalization are key for social skills. This study found differences in brain activity preceding JA in children with autism spectrum disorder (ASD), impacting their social development.
Area of Science:
- Neuroscience
- Developmental Psychology
- Child Psychiatry
Background:
- Joint attention (JA) is crucial for adult social functioning and precedes mentalization (Theory of Mind).
- Neural mechanisms underlying mentalization development are not fully understood.
- Autistic spectrum disorder (ASD) is characterized by deficits in JA and mentalization.
Purpose of the Study:
- To investigate the correlation between neural activity preceding JA and mentalization in typically developing (TD) children.
- To examine if this neural activity is impaired in children with ASD.
- To explore the role of specific neural mechanisms in mentalization during social interaction.
Main Methods:
- Electroencephalography (EEG) was used to record brain activity in children while they engaged with stimuli and an experimenter.
- Event-related potentials (ERPs), specifically the negative central (Nc) component, and beta oscillatory activity were analyzed.
- JA behavior frequency and its preceding neural correlates were assessed in TD and ASD groups.
Main Results:
- Both TD and ASD children exhibited comparable JA behavior frequency.
- TD children showed a higher amplitude Nc component preceding JA compared to ASD children.
- TD children exhibited increased temporoparietal beta activity before JA, which was absent in ASD children.
Conclusions:
- The study identifies specific neural differences in JA processing between TD and ASD children.
- Temporoparietal beta activity preceding JA is linked to mentalization abilities in both groups.
- These findings suggest that impaired beta oscillatory activity may underlie mentalization deficits in ASD.
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