Related Experiment Videos
Vestibular hyporeactivity in infants at risk for schizophrenia. Association with critical developmental disorders
Insights
Infants of mothers with schizophrenia showed transiently decreased vestibular responses, linked to neurodevelopmental disorders. These findings suggest disrupted central nervous system integration rather than organic vestibular issues.
Area of Science:
- Neuroscience
- Developmental Psychology
- Psychiatry
Background:
- Genetic risk for schizophrenia may involve evolving neurointegrative disorders.
- Early detection of neurodevelopmental issues in at-risk infants is crucial.
Purpose of the Study:
- To investigate vestibular responses in infants with a genetic risk for schizophrenia.
- To explore the association between vestibular function and neurodevelopmental outcomes.
Main Methods:
- Vestibular responses to caloric stimulation were measured in infants from birth to 2 years.
- Participants included ten infants born to mothers with schizophrenia.
- Developmental assessments were conducted up to 10 years of age.
Main Results:
- Transiently decreased vestibular responses were observed.
- These decreased responses correlated with developmental disorders and psychopathology at 10 years.
- Absent to decreased responses were linked to pandevelopmental retardation, "abnormally quiet" states, and failures of bimanual integration.
Conclusions:
- The transient nature of decreased vestibular responses suggests disrupted central nervous system integration, not organic lesions.
- Subtle decreases in arousal may accompany periods of disrupted neurointegration.
- Vestibular assessment may offer insights into early neurodevelopmental risks associated with schizophrenia.
Abstract:
Vestibular responses to caloric stimulation were measured from birth to age 2 years in ten infants born to schizophrenic mothers. This is part of a study of evolving neurointegrative disorders that may be associated with a genetic risk for schizophrenia. Transiently decreased vestibular responses coincided with several developmental disorders that were related to psychopathology at 10 years. Absent to decreased responses were associated with (1) a "pandevelopmental retardation" involving physical growth as well as postural-motor and visual-motor development, (2) an "abnormally quiet" state in the first month, and (3) failures of bimanual integration between 4 and 6 months. The transitory nature of the decreased nystagmus rules out the possibility of an organic lesion of the vestibular system. Rather, it suggests that some covert decrease in arousal accompanied those periods when central nervous system integration was disrupted.