Featured Research

from universities, journals, and other organizations

Eye movement when reading could be early indicator of Alzheimer's

Date:
March 26, 2014
Source:
Taylor & Francis
Summary:
Researchers have suggested that alterations in eye movements when reading could be linked to impairments in working memory and an early indication of Alzheimer’s disease. Researchers found that the patients with a diagnosis of probable Alzheimer's disease showed a decreased ability to predict the next words in a sentence based on contextual information, including sentence meaning and grammatical structure, when compared to the control group.

Researchers have suggested that alterations in eye movements when reading could be linked to impairments in working memory and an early indication of Alzheimer's disease according to a new study published in the Journal of Clinical and Experimental Neuropsychology.

The study focussed on a group of 18 patients with a diagnosis of probable Alzheimer's disease. Eye movements were recorded at the Universidad Nacional del Sur (UNS), Bahνa Blanca, Argentina. The visual stimulus were sentences in Spanish designed to represent a large variety of grammatical structures. The eye movement modelling and analyses were carried out for an interdisciplinary group of researchers of Argentina (UNS, CIC, CONICET) and of Germany (UniPotsdam).

Researchers found that the patients showed a decreased ability to predict the next words in a sentence based on contextual information, including sentence meaning and grammatical structure, when compared to the control group.

The patients also showed signs of less focussed visual exploration, including slower eye movements when reading, and longer fixations both when processing new information and when reading sentences for the second time.

The researchers expected to find that once readers could predict the context of the sentence based on structure and meaning, they could infer what words should come next and therefore skip more upcoming words. However, the patients with probable Alzheimer's disease skipped words less frequently than the control group, suggesting problems for Alzheimer's patients in integrating and using word stored information, presumably due to impairments in the working memory and in retrieval memory.

The researchers note that when patients with early Alzheimer's disease are performing tasks such as reading and writing, certain movement coordination and planning difficulties that may be present are commonly unnoticed.

They go on to propose that an in-depth analysis of eye movement and processes including word predictions may provide key markers for early disease symptoms.


Story Source:

The above story is based on materials provided by Taylor & Francis. Note: Materials may be edited for content and length.


Journal Reference:

  1. Gerardo Fernαndez, Jochen Laubrock, Pablo Mandolesi, Oscar Colombo, Osvaldo Agamennoni. Registering eye movements during reading in Alzheimer’s disease: Difficulties in predicting upcoming words. Journal of Clinical and Experimental Neuropsychology, 2014; 36 (3): 302 DOI: 10.1080/13803395.2014.892060

Cite This Page:

Taylor & Francis. "Eye movement when reading could be early indicator of Alzheimer's." ScienceDaily. ScienceDaily, 26 March 2014. <www.sciencedaily.com/releases/2014/03/140326114514.htm>.
Taylor & Francis. (2014, March 26). Eye movement when reading could be early indicator of Alzheimer's. ScienceDaily. Retrieved September 17, 2014 from www.sciencedaily.com/releases/2014/03/140326114514.htm
Taylor & Francis. "Eye movement when reading could be early indicator of Alzheimer's." ScienceDaily. www.sciencedaily.com/releases/2014/03/140326114514.htm (accessed September 17, 2014).

Share This



More Mind & Brain News

Wednesday, September 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

FDA Eyes Skin Shocks Used at Mass. School

FDA Eyes Skin Shocks Used at Mass. School

AP (Sep. 15, 2014) — The FDA is considering whether to ban devices used by the Judge Rotenberg Educational Center in Canton, Massachusetts, the only place in the country known to use electrical skin shocks as aversive conditioning for aggressive patients. (Sept. 15) Video provided by AP
Powered by NewsLook.com
Shocker: Journalists Are Utterly Addicted To Coffee

Shocker: Journalists Are Utterly Addicted To Coffee

Newsy (Sep. 13, 2014) — A U.K. survey found that journalists consumed the most amount of coffee, but that's only the tip of the coffee-related statistics iceberg. Video provided by Newsy
Powered by NewsLook.com
'Magic Mushrooms' Could Help Smokers Quit

'Magic Mushrooms' Could Help Smokers Quit

Newsy (Sep. 11, 2014) — In a small study, researchers found that the majority of long-time smokers quit after taking psilocybin pills and undergoing therapy sessions. Video provided by Newsy
Powered by NewsLook.com
'Fat Shaming' Might Actually Cause Weight Gain

'Fat Shaming' Might Actually Cause Weight Gain

Newsy (Sep. 11, 2014) — A study for University College London suggests obese people who are discriminated against gain more weight than those who are not. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

    Environment News

      Technology News



      Save/Print:
      Share:  

      Free Subscriptions


      Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

      Get Social & Mobile


      Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

      Have Feedback?


      Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
      Mobile iPhone Android Web
      Follow Facebook Twitter Google+
      Subscribe RSS Feeds Email Newsletters
      Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins