TY  - JOUR
UR  - https://doi.org/10.1515/lingvan-2018-0026
EP  - 10
SN  - 2199-174X
TI  - Perplexity ? a new predictor of cognitive changes in spoken language? ? results of the Interdisciplinary Longitudinal Study on Adult Development and Aging (ILSE)
KW  - language and aging
KW  -  speech processing
KW  -  Alzheimer?s disease
KW  -  mild cognitive impairment
N2  - Abstract: In addition to memory loss, progressive deterioration of speech and language skills is among the main symptoms at the onset of Alzheimer?s disease (AD) as well as in mild cognitive impairment (MCI). Detailed interview analyses demonstrated early symptoms years before the onset of AD/MCI. Automatic speech processing could be a promising approach to identifying underlying mechanisms in larger studies or even support diagnostics. Perplexity as a measure of predictability of text could be a sensitive indicator of cognitive deterioration. Therefore, voice recordings from the Interdisciplinary Longitudinal Study on Adult Development and Aging were analyzed with regard to neuropsychological parameters in participants that develop MCI/AD or remain cognitively healthy. Preliminary results indicate that perplexity predicts severity of cognitive deficits and information processing speed obtained 10?12 years later in participants who developed MCI/AD in contrast to those who stayed healthy. Findings support the heuristic value of research on the diagnostic potential of automatic speech processing.
IS  - s2
SP  - 1
VL  - 5
JF  - Linguistics Vanguard
CY  - Berlin ; New York, NY
ID  - heidok32749
N1  - Dieser Beitrag ist aufgrund einer (DFG-geförderten) Allianz bzw. Nationallizenz frei zugänglich. *** This publication is freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
Y1  - 2019///
AV  - public
PB  - De Gruyter Mouton
A1  - Frankenberg, Claudia
A1  - Weiner, Jochen
A1  - Schultz, Tanja
A1  - Knebel, Maren
A1  - Degen, Christina
A1  - Wahl, Hans-W.
A1  - Schroeder, Johannes
ER  -