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Age‐Related Changes in Occipital Alpha Rhythm of Adults with Down Syndrome
Author(s) -
Ono Yoshiro,
Yoshida Hironobu,
Momotani Yozo,
Yoshimasu Fumio,
Higashi Yuji
Publication year - 1992
Publication title -
psychiatry and clinical neurosciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.609
H-Index - 74
eISSN - 1440-1819
pISSN - 1323-1316
DOI - 10.1111/j.1440-1819.1992.tb00540.x
Subject(s) - alpha (finance) , rhythm , audiology , alpha rhythm , medicine , psychology , down syndrome , electroencephalography , developmental psychology , neuroscience , psychiatry , construct validity , psychometrics
A power spectral analysis was performed on occipital EECs recorded from 36 : Down Syndrome (DS) subjects aged 15 : to 54 : and compared with two control groups; 47 : healthy volunteers (Control) and 42 : mentally retarded people without DS (MR). The frequencies of occipital alpha rhythms of DS showed a eignIflcant inverse correlation with chronological age, while Control and MR did not. The average frequencies of DS were signIflcanUy low even in the youngest age‐group in comparison with those of Control, and also decreased in the age‐groups of 35 : and older compared with MR. It was considered that a slowing of alpha rhythm was a manifestation of premature aging that occurred in the underdeveloped brains of DS.