Staged decline of visual processing capacity in mild cognitive impairment and Alzheimer's disease

Bublak P, Redel P, Sorg C, Kurz A, Foerstl H, Mueller HJ, Schneider WX, Finke K (2011)
Neurobiology of Aging 32(7): 1219-1230.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
Visual information intake was assessed with a whole-report task in patients with probable Alzheimer's disease (AD), mild cognitive impairment (MCI), and healthy elderly control subjects. Based on a theory of visual attention (TVA), four parameters were derived characterising different aspects of visual processing capacity: perceptual threshold, iconic memory, processing speed, and visual short-term memory (VSTM) storage capacity. Results indicated increased perceptual thresholds in MCI, and an additional decline in processing speed and VSTM storage capacity in AD. Cholinomimetic medication had beneficial effects on processing speed in AD patients. Perceptual thresholds were associated with disease duration, but not with cognitive measures, while the reverse was true for speed and VSTM measures. These results reveal a staged pattern of deficits affecting pre-attentive visual processing in MCI, and attentive processing in AD. It is compatible with the amyloid cascade hypothesis and suggests that impaired visual processing is a pathological feature present already at the MCI stage and might represent a distinct marker of upcoming AD independently from memory deficits. (C) 2009 Elsevier Inc. All rights reserved.
Erscheinungsjahr
Zeitschriftentitel
Neurobiology of Aging
Band
32
Zeitschriftennummer
7
Seite
1219-1230
ISSN
PUB-ID

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Bublak P, Redel P, Sorg C, et al. Staged decline of visual processing capacity in mild cognitive impairment and Alzheimer's disease. Neurobiology of Aging. 2011;32(7):1219-1230.
Bublak, P., Redel, P., Sorg, C., Kurz, A., Foerstl, H., Mueller, H. J., Schneider, W. X., et al. (2011). Staged decline of visual processing capacity in mild cognitive impairment and Alzheimer's disease. Neurobiology of Aging, 32(7), 1219-1230. doi:10.1016/j.neurobiolaging.2009.07.012
Bublak, P., Redel, P., Sorg, C., Kurz, A., Foerstl, H., Mueller, H. J., Schneider, W. X., and Finke, K. (2011). Staged decline of visual processing capacity in mild cognitive impairment and Alzheimer's disease. Neurobiology of Aging 32, 1219-1230.
Bublak, P., et al., 2011. Staged decline of visual processing capacity in mild cognitive impairment and Alzheimer's disease. Neurobiology of Aging, 32(7), p 1219-1230.
P. Bublak, et al., “Staged decline of visual processing capacity in mild cognitive impairment and Alzheimer's disease”, Neurobiology of Aging, vol. 32, 2011, pp. 1219-1230.
Bublak, P., Redel, P., Sorg, C., Kurz, A., Foerstl, H., Mueller, H.J., Schneider, W.X., Finke, K.: Staged decline of visual processing capacity in mild cognitive impairment and Alzheimer's disease. Neurobiology of Aging. 32, 1219-1230 (2011).
Bublak, Peter, Redel, Petra, Sorg, Christian, Kurz, Alexander, Foerstl, Hans, Mueller, Hermann J., Schneider, Werner X., and Finke, Kathrin. “Staged decline of visual processing capacity in mild cognitive impairment and Alzheimer's disease”. Neurobiology of Aging 32.7 (2011): 1219-1230.

22 Zitationen in Europe PMC

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