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Centre for Policy on Ageing | |
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| Aging, smoking and hemispheric EEG asymmetry | | Author(s) | Verner J Knott, Anne Harr |
| Journal title | Canadian Journal on Aging, vol 16, no 4, Winter 1997 |
| Pages | pp 647-664 |
| Keywords | Mental ageing ; Dementia ; Tobacco smoking ; Older people ; Adults ; Comparison ; Canada. |
| Annotation | The influence of smoking on age-related brain function status has received little attention in research. In this Canadian study, quantified electroencephalographic (EEG) indices of hemispheric asymmetry were employed to assess whether smoker/non-smoker status affected the ageing brain and whether the ageing brain demonstrated an altered response to acute smoking/nicotine. Forty healthy volunteers participated, including 20 young (18-39 years) and 20 older (64-81 years ) adults. Half of the subjects in each category were lifelong smokers and half were cigarette smokers with average smoking histories of 9.3 and 52.0 years for young and older people respectively. Inter-hemispheric theta and alpha asymmetry indices illustrated greater left hemisphere power (relative to right) in older adults, while the reverse trend was seen in younger adults. Smokers and non-smokers both showed similar ageing trends but differed with respect to their presence in frontal and posterior regions. Acute smoking increased slow (delta) and fast (beta) inter-hemispheric indices but only in older smokers. The results are discussed in relation to normal ageing, and in relation to disorders such as dementia of the Alzheimer's type (DAT). (AKM). |
| Accession Number | CPA-980720216 A |
| Classmark | D6: EA: ETT: B: SD: 48: 7S |
Data © Centre for Policy on Ageing |
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| ...from the Ageinfo database published by Centre for Policy on Ageing. |
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