The Relationship between Aging and Photic Driving EEG Response

Tadanori FUKAMI  Takamasa SHIMADA  Fumito ISHIKAWA  Bunnoshin ISHIKAWA  Yoichi SAITO  

IEICE TRANSACTIONS on Information and Systems   Vol.E94-D   No.9   pp.1839-1842
Publication Date: 2011/09/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E94.D.1839
Print ISSN: 0916-8532
Type of Manuscript: LETTER
Category: Biological Engineering
EEG,  photic driving response,  aging,  Z-score,  

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The present study examined the evaluation of aging using the photic driving response, a measure used in routine EEG examinations. We examined 60 normal participants without EEG abnormalities, classified into three age groups (2029, 3059 and over 60 years; 20 participants per group). EEG was measured at rest and during photic stimulation (PS). We calculated Z-scores as a measure of enhancement and suppression due to visual stimulation at rest and during PS and tested for between-group and intraindividual differences. We examined responses in the alpha frequency and harmonic frequency ranges separately, because alpha suppression can affect harmonic frequency responses that overlap the alpha frequency band. We found a negative correlation between Z-scores for harmonics and age by fitting the data to a linear function (CC: -0.740). In contrast, Z-scores and alpha frequency were positively correlated (CC: 0.590).