Cited by 1,058Autism Spectrum Disorder ResearchGenetics and Neurodevelopmental DisordersFetal and Pediatric Neurological Disorders

Hypoplasia of cerebellar vermal lobules VI and VII in autism

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Courchesne, E., Yeung-Courchesne, R., Hesselink, J.R., Jernigan, T.L.·1988·New England Journal of Medicine

Abstract

Autism is a neurologic disorder that severely impairs social, language, and cognitive development. Whether autism involves maldevelopment of neuroanatomical structures is not known. The size of the cerebellar vermis in patients with autism was measured on magnetic resonance scans and compared with its size in controls. The neocerebellar vermal lobules VI and VII were found to be significantly smaller in the patients. This appeared to be a result of developmental hypoplasia rather than shrinkage or deterioration after full development had been achieved. In contrast, the adjacent vermal lobules I to V, which are ontogenetically, developmentally, and anatomically distinct from lobules VI and VII, were found to be of normal size. Maldevelopment of the vermal neocerebellum had occurred in both retarded and nonretarded patients with autism. This localized maldevelopment may serve as a temporal marker to identify the events that damage the brain in autism, as well as other neural structures that may be concomitantly damaged. Our findings suggest that in patients with autism, neocerebellar abnormality may directly impair cognitive functions that some investigators have attributed to the neocerebellum; may indirectly affect, through its connections to the brain stem, hypothalamus, and thalamus, the development and functioning of one or more systems involved in cognitive, sensory, autonomic, and motor activities; or may occur concomitantly with damage to other neural sites whose dysfunction directly underlies the cognitive deficits in autism.

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Crossref · 10.1056/nejm198805263182102

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  • Evidence from neuroanatomical, animal, and epidemiologic studies supports prenatal and early postnatal origins of autism.

    “evidence from neuroanatomical, animal, and epidemiologic studies support the prenatal and early postnatal origins of autism.19–24”
  • The cerebellum was the first brain region shown in the late 1980s to host neuroanatomical abnormalities in many autistic individuals.

    “The cerebellum was the first brain region shown in the late 80’s to host neuroanatomical abnormalities in many autistic individuals [33, 228, 229].”
  • The most frequently reported cerebellar anomalies in autism include smaller vermis volume, Purkinje cell numbers reduced by up to 50%, ectopic neurons in white matter, and patchy cytoarchitectonic ectopias in cerebellar cortex.

    “The anomalies most frequently reported include a smaller vermis volume, Purkinje cell numbers reduced by up to 50%, ectopic neurons in the white matter, and patchy cytoarchitectonic ectopias in the cerebellar cortex [32, 33, 118, 228, 229].”

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Research works printed but not linked: 8

  1. [3]3. Rutter M, Schopler E, eds. Autism: a reappraisal of concepts and treatment. New York: Plenum Press, 1978.
  2. [9]9. Williams RS, Hauser SL, Purpura DP, DeLong R, Swisher CN. Autism and -meud ea sos s edd sess d eas etr sons with autistic behavior. Arch Neurol 1980; 37:749-53.
  3. [18]18. Ameli R, Courchesne E, Lincoln AJ, Kaufman AS, Grillon C. Visual memory processes in high-functioning individuals with autism. J Autism Dev Disord (in press).
  4. [20]20. Courchesne E, Lincoln AJ, Yeung-Courchesne R, Elmasian R, Grillon C. Pathophysiologic findings in non-retarded autism and receptive developmental language disorder. J Autism Dev Disord (in press).
  5. [21]21. Courchesne E. The missing ingredients in autism. Presented at the Conference on Brain and Behavioral Development: Biosocial Dimensions, Elridge, Md., May 19–22, 1985.
  6. [23]23. Idem. Long-term habituation of acoustic startle following lesions of the cerebellar vermis or cerebellar hemisphere. Abstr Soc Neurosci 1986; 12:978.
  7. [33]33. eun a a n empn pus and the cerebellum: an electrophysiological study of the cat. J Physiol (Lond) 1979; 287:405-26.
  8. [38]38. Ryan LJ, Young SJ, Groves PM. Reticular and cerebellar stimulation mimic amphetamine actions on amplitude and timing of frontal cortex evoked neostriatal responses in rats. Abstr Soc Neurosci 1987; 13:978.

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Authors
Courchesne, E., Yeung-Courchesne, R., Hesselink, J. R., & Jernigan, T. L.
Affiliations
  • University of California San Diego (US)
  • United States Department of Veterans Affairs (US)
Venue
New England Journal of Medicine
Published
1988-05-26
Volume
318
Issue
21
Pages
1349-1354
ISSN
  • 0028-4793 (ISSN-L)
  • 1533-4406
OpenAlex
W2326708165
Cited by
1,058
References
50
Citations by year
2026: 9 · 2025: 11 · 2024: 19 · 2023: 21 · 2022: 26 · 2021: 31 · 2020: 22 · 2019: 23 · 2018: 22 · 2017: 16 · 2016: 38 · 2015: 29 · 2014: 41 · 2013: 40 · 2012: 34
FWCI
22.48
Type
journal article
Language
en
Open access
Locations
  • New England Journal of Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Institute of Mental Health (1-R01-MH-36840, R01MH036840)
  • National Institute of Neurological Disorders and Stroke (5-R01-NS 19855, R01NS019855)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Fetal and Pediatric Neurological Disorders
Keywords
autism spectrum disorder, cerebellar vermis, cerebellar hypoplasia, neocerebellum, structural brain abnormalities, cognitive impairment, intellectual disability, developmental neuroanatomy
MeSH terms
Adolescent, Adult, Autistic Disorder, Cerebellum, Child, Female, Humans, Magnetic Resonance Imaging, Male

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