Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2014 Jul:2014:2898-2905.

THink: Inferring Cognitive Status from Subtle Behaviors

Affiliations

THink: Inferring Cognitive Status from Subtle Behaviors

Randall Davis et al. Proc AAAI Conf Artif Intell. 2014 Jul.

Abstract

The Digital Clock Drawing Test is a fielded application that provides a major advance over existing neuropsychological testing technology. It captures and analyzes high precision information about both outcome and process, opening up the possibility of detecting subtle cognitive impairment even when test results appear superficially normal. We describe the design and development of the test, document the role of AI in its capabilities, and report on its use over the past seven years. We outline its potential implications for earlier detection and treatment of neurological disorders. We also set the work in the larger context of the THink project, which is exploring multiple approaches to determining cognitive status through the detection and analysis of subtle behaviors.

PubMed Disclaimer

Figures

Figure. 1
Figure. 1
Example clocks – normal appearing (1a) and clearly impaired (1b).
Figure 2
Figure 2
The program interface.
Figure 3
Figure 3
Partially classified clock.
Fig. 4
Fig. 4
Overwritten digits (12 over-written with a 6)
Figure 5
Figure 5
A hooklet.

References

    1. Alzheimer’s Association. Alzheimer’s Disease Facts and Figures. Alzheimer’s & Dementia. 2012;8(2):2012. - PubMed
    1. Freedman M, Leach L, Kaplan E, Winocur G, Shulman K, Delis D. Clock Drawing: A Neuro-psychological Analysis. Oxford Univ Press; 1994.
    1. Fryer S, Sutton E, Tiplady B, Wright P. Trail making without trails: the use of a pen computer task for assessing brain damage. Clinical Neuropsychology Assessment. 2000;2:151–165.
    1. Grande L, Rudolph J, Davis R, Penney D, Price C, Swenson R, Libon D, Milberg W. Clock Drawing: Standing the Test of Time. In: Ashendorf, Swenson, Libon, editors. The Boston Process Approach to Neuropsychological Assessment. Oxford Univ Press; 2013. 2013.
    1. Kim H. PhD, Thesis. Georgia Institute of Technology, College of Computing; 2013. The Clockme System: Computer-Assisted Screening Tool For Dementia. 2013.

LinkOut - more resources