I am not only asking about physical attributes (e.g. their speed of speaking, their tone of voice, speed of response to questions etc., though studies about those are very much welcome). I would like to know if such studies also evaluated the content of their speech, such as their grammar, sentence structures, word choices, word association etc.--in other words, how the content of their speech differs from those not suffering from those diseases.
Dear Narciso Rafael Elarmo Torres,
Maybe the following recent papers will help you:
Szatloczki G, Hoffmann I, Vincze V, Kalman J, Pakaski M. Speaking in Alzheimer's Disease, is That an Early Sign? Importance of Changes in Language Abilities in Alzheimer's Disease. Front Aging Neurosci 2015;7:195. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4611852/pdf/fnagi-07-00195.pdf
Fraser KC, Meltzer JA, Rudzicz F. Linguistic Features Identify Alzheimer's Disease in Narrative Speech. J Alzheimers Dis 2016;49(2):407-22. https://www.cs.toronto.edu/~kfraser/Fraser15-JAD.pdf
Orimaye SO, Wong JS, Golden KJ, Wong CP, Soyiri IN. Predicting probable Alzheimer's disease using linguistic deficits and biomarkers. BMC Bioinformatics 2017;18(1):34. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5237556/pdf/12859_2016_Article_1456.pdf
Boschi V, Catricalà E, Consonni M, Chesi C, Moro A, Cappa SF. Connected Speech in Neurodegenerative Language Disorders: A Review. Front Psychol 2017;8:269. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5337522/pdf/fpsyg-08-00269.pdf
López-Higes R, Prados JM, Rubio S, Montejo P, Del Río D. Executive functions and linguistic performance in SCD older adults and healthy controls. Neuropsychol Dev Cogn B Aging Neuropsychol Cogn 2017;24(6):717-734. http://www.tandfonline.com/doi/abs/10.1080/13825585.2016.1256370
Weyerman JJ, Rose C, Norton MC. Personal Journal Keeping and Linguistic Complexity Predict Late-Life Dementia Risk: The Cache County Journal Pilot Study. Gerontol B Psychol Sci Soc Sci 2017;72(6):991-995. https://academic.oup.com/psychsocgerontology/article-abstract/72/6/991/2632021?redirectedFrom=fulltext
Mukadam N, Sommerlad A, Livingston G. The Relationship of Bilingualism Compared to Monolingualism to the Risk of Cognitive Decline or Dementia: A Systematic Review and Meta-Analysis. J Alzheimers Dis 2017;58(1):45-54. https://www.researchgate.net/publication/315827748_The_Relationship_of_Bilingualism_Compared_to_Monolingualism_to_the_Risk_of_Cognitive_Decline_or_Dementia_A_Systematic_Review_and_Meta-Analysis
Best wishes from Germany,
Martin
Here are two more interesting studies for you:
Small JA, Kemper S, Lyons K. Sentence comprehension in Alzheimer's disease: effects of grammatical complexity, speech rate, and repetition. Psychol Aging 1997;12(1):3-11. https://www.researchgate.net/profile/Susan_Kemper/publication/14117579_Sentence_comprehension_in_Alzheimer%27s_disease_Effects_of_grammatical_complexity_speech_rate_and_repetition/links/55f6cf8708aeafc8abf500e3/Sentence-comprehension-in-Alzheimers-disease-Effects-of-grammatical-complexity-speech-rate-and-repetition.pdf
Kempler D, Almor A, Tyler LK, Andersen ES, MacDonald MC. Sentence comprehension deficits in Alzheimer's disease: a comparison of off-line vs. on-line sentence processing. Brain Lang. 1998 Oct 1;64(3):297-316. https://pdfs.semanticscholar.org/7083/a1e5f9459fab1c1ca810cf1280a4fb47ea40.pdf
All the best for your research,
Martin
Thank you for the papers Dr. Hofmeister. I'll give them a read.
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