NDLI: Kinematics of signature writing in healthy aging.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Caligiuri, Michael P. Kim, Chi Landy, Kelly M.
Description	Country affiliation: Canada Author Affiliation: Caligiuri MP ( Department of Psychiatry, University of California at San Diego, La Jolla, CA.)
Abstract	Forensic document examiners (FDE) called upon to distinguish a genuine from a forged signature of an elderly person are often required to consider the question of age-related deterioration and whether the available exemplars reliably capture the natural effects of aging of the original writer. An understanding of the statistical relationship between advanced age and handwriting movements can reduce the uncertainty that may exist in an examiner's approach to questioned signatures formed by elderly writers. The primary purpose of this study was to systematically examine age-related changes in signature kinematics in healthy writers. Forty-two healthy subjects between the ages of 60-91 years participated in this study. Signatures were recorded using a digitizing tablet, and commercial software was used to examine the temporal and spatial stroke kinematics and pen pressure. Results indicated that vertical stroke duration and dysfluency increased with age, whereas vertical stroke amplitude and velocity decreased with age. Pen pressure decreased with age. We found that a linear model characterized the best-fit relationship between advanced age and handwriting movement parameters for signature formation. Male writers exhibited stronger age effects than female writers, especially for pen pressure and stroke dysfluency. The present study contributes to an understanding of how advanced age alters signature formation in otherwise healthy adults.
File Format	HTM / HTML
ISSN	00221198
e-ISSN	15564029
DOI	10.1111/1556-4029.12437
Journal	Journal of Forensic Sciences
Issue Number	4
Volume Number	59
Language	English
Publisher	Wiley-Blackwell
Publisher Date	2014-07-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Research Support, N.i.h., Extramural Handwriting Linear Models Discipline Forensic Sciences Biomechanical Phenomena Aging Physiology
Content Type	Text
Resource Type	Article
Subject	Genetics Pathology and Forensic Medicine

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Kinematics of Signature Writing in Healthy Aging*

Writing forces associated with four pencil grasp patterns in grade 4 children.

Head motions while riding roller coasters: implications for brain injury.

Mosaic aging.

Nature versus nurture in glioblastoma: microenvironment and genetics can both drive mesenchymal transcriptional signature.

Aging analysis reveals slowed tau turnover and enhanced stress response in a mouse model of tauopathy.

Carpal and forearm kinematics during a simulated hammering task.

The hysteresis effect in carpal kinematics.

Material properties of aged human mitral valve leaflets.

Kinematics of signature writing in healthy aging.

Similar Documents

Kinematics of Signature Writing in Healthy Aging*

Writing forces associated with four pencil grasp patterns in grade 4 children.

Head motions while riding roller coasters: implications for brain injury.

Mosaic aging.

Nature versus nurture in glioblastoma: microenvironment and genetics can both drive mesenchymal transcriptional signature.

Aging analysis reveals slowed tau turnover and enhanced stress response in a mouse model of tauopathy.

Carpal and forearm kinematics during a simulated hammering task.

The hysteresis effect in carpal kinematics.

Material properties of aged human mitral valve leaflets.

Kinematics of signature writing in healthy aging.