Document Detail


Conception season and cerebral asymmetries among American baseball players: implications for the seasonal birth effect in schizophrenia.
MedLine Citation:
PMID:  19395089     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
People with schizophrenia and children born with neural tube defects both tend to be conceived most often in May-June, about a month before the summer solstice, and least often in November-December, a month before the winter solstice. Such timings, coupled with evidence of cerebral asymmetry deficits in schizophrenia, and evidence that asymmetry development and neural tube closure represent concurrent fourth-embryonic-week processes both sensitive to oxidant stress, led us to the hypothesis that pro-oxidant sunlight actions capable of affecting the mother's blood could result in a peri-June peak of inhibition and a peri-December peak of facilitation of both processes. Here, using birth and hand preference data from baseball statistics, we tested the hypothesis's prediction that, as a group representing minimal cerebral lateralization, left-handed players would show the same conception rhythm as that observed in the above disorders. We found that not only strict left-handers (those both batting and throwing left) were most often conceived in May-June but that also strict right-handers and other players denoting more extreme levels of cerebral lateralization were most often conceived in November-December.
Authors:
Giovanni Marzullo; Frank Clarke Fraser
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Publication Detail:
Type:  Journal Article     Date:  2009-04-23
Journal Detail:
Title:  Psychiatry research     Volume:  167     ISSN:  0165-1781     ISO Abbreviation:  Psychiatry Res     Publication Date:  2009 May 
Date Detail:
Created Date:  2009-05-04     Completed Date:  2009-06-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7911385     Medline TA:  Psychiatry Res     Country:  Ireland    
Other Details:
Languages:  eng     Pagination:  287-93     Citation Subset:  IM    
Affiliation:
Per Aspera Research Foundation, New York, NY 10023, United States. gmarzullo@prspr.org
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MeSH Terms
Descriptor/Qualifier:
Baseball / physiology*,  statistics & numerical data
Birth Certificates*
Brain / physiopathology*
Cohort Studies
Functional Laterality / physiology
Humans
Schizophrenia / physiopathology*
Seasons*
United States

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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