Meta-analysis and systematic review of the literature characterizing auditory mismatch negativity in individuals with autism

Meta-analysis and systematic review of the literature characterizing auditory mismatch negativity in individuals with autism. Schwartz, S., Shinn-Cunningham, B., & Tager-Flusberg, H. Neurosci Biobehav Rev, 87:106–117, 2018.
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A number of past studies have used mismatch negativity (MMN) to identify auditory processing deficits in individuals with autism spectrum disorder (ASD). Our meta-analysis compared MMN responses for individuals with ASD and typically developing controls (TD). We analyzed 67 experiments across 22 publications that employed passive, auditory-based MMN paradigms with ASD and TD participants. Most studies lacked design characteristics that would lead to an accurate description of the MMN. Variability between experiments measuring MMN amplitude was smaller when limited to studies that counterbalanced stimuli. Reduced MMN amplitude was found among young children with ASD compared to controls and in experiments that used nonspeech sounds. Still, few studies included adolescents or those with below-average verbal IQ. Most studies suffered from small sample sizes, and aggregating these data did not reveal significant group differences. This analysis points to a need for research focused specifically on understudied ASD samples using carefully designed MMN experiments. Study of individual differences in MMN may provide further insights into distinct subgroups within the heterogeneous ASD population.

@article{schwartz_meta-analysis_2018,
	title = {Meta-analysis and systematic review of the literature characterizing auditory mismatch negativity in individuals with autism},
	volume = {87},
	doi = {10.1016/j.neubiorev.2018.01.008},
	abstract = {A number of past studies have used mismatch negativity (MMN) to identify auditory processing deficits in individuals with autism spectrum disorder (ASD). Our meta-analysis compared MMN responses for individuals with ASD and typically developing controls (TD). We analyzed 67 experiments across 22 publications that employed passive, auditory-based MMN paradigms with ASD and TD participants. Most studies lacked design characteristics that would lead to an accurate description of the MMN. Variability between experiments measuring MMN amplitude was smaller when limited to studies that counterbalanced stimuli. Reduced MMN amplitude was found among young children with ASD compared to controls and in experiments that used nonspeech sounds. Still, few studies included adolescents or those with below-average verbal IQ. Most studies suffered from small sample sizes, and aggregating these data did not reveal significant group differences. This analysis points to a need for research focused specifically on understudied ASD samples using carefully designed MMN experiments. Study of individual differences in MMN may provide further insights into distinct subgroups within the heterogeneous ASD population.},
	urldate = {2021-05-10},
	journal = {Neurosci Biobehav Rev},
	author = {Schwartz, Sophie and Shinn-Cunningham, Barbara and Tager-Flusberg, Helen},
	year = {2018},
	keywords = {Auditory processing, Autism, Event-related potential, MMF, MMN, Meta-analysis, Mismatch field, Mismatch negativity, Oddball, Systematic review},
	pages = {106--117},
}

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