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Your search keyword '"Michal Kafri"' showing total 2 results
Start Over Author "Michal Kafri" Journal journal of neuroengineering and rehabilitation
2 results on '"Michal Kafri"'

1. Performance in complex life situations: effects of age, cognition, and walking speed in virtual versus real life environments

Author

Michal Kafri, Patrice L. Weiss, Gabriel Zeilig, Moshe Bondi, Ilanit Baum-Cohen, and Rachel Kizony

Subjects
Virtual environment, Virtual reality, Virtual shopping, Gait, Older adults, Simulation, Neurosciences. Biological psychiatry. Neuropsychiatry, RC321-571
Abstract

Abstract Background Virtual reality (VR) enables objective and accurate measurement of behavior in ecologically valid and safe environments, while controlling the delivery of stimuli and maintaining standardized measurement protocols. Despite this potential, studies that compare virtual and real-world performance of complex daily activities are scarce. This study aimed to compare cognitive strategies and gait characteristics of young and older healthy adults as they engaged in a complex task while navigating in a real shopping mall and a high-fidelity virtual replica of the mall. Methods Seventeen older adults (mean (SD) age = 71.2 (5.6) years, 64% males) and 17 young adults (26.7 (3.7) years, 35% males) participated. In two separate sessions they performed the Multiple Errands Test (MET) in a real-world mall or the Virtual MET (VMET) in the virtual environment. The real-world environment was a small shopping area and the virtual environment was created within the CAREN™ (Computer Assisted Rehabilitation Environment) Integrated Reality System. The performance of the task was assessed using motor and physiological measures (gait parameters and heart rate), MET or VMET time and score, and navigation efficiency (cognitive performance and strategy). Between (age groups) and within (environment) differences were analyzed with ANOVA repeated measures. Results There were no significant age effects for any of the gait parameters but there were significant environment effects such that both age groups walked faster (F(1,32) = 154.96, p

Published
2021
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2. Performance in complex life situations: effects of age, cognition, and walking speed in virtual versus real life environments

Author

Gabriel Zeilig, Michal Kafri, Patrice L. Weiss, Ilanit Baum-Cohen, Moshe Bondi, and Rachel Kizony

Subjects
Male, 030506 rehabilitation, medicine.medical_specialty, Aging, Activities of daily living, medicine.medical_treatment, Health Informatics, Walking, lcsh:RC321-571, 03 medical and health sciences, Young Adult, 0302 clinical medicine, Physical medicine and rehabilitation, Cognition, Task Performance and Analysis, medicine, Virtual shopping, Humans, Effects of sleep deprivation on cognitive performance, Young adult, lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry, Gait, Aged, Rehabilitation, Research, Virtual Reality, Repeated measures design, Virtual environment, Preferred walking speed, Older adults, Female, 0305 other medical science, Psychology, 030217 neurology & neurosurgery, Simulation
Abstract

BackgroundVirtual reality (VR) enables objective and accurate measurement of behavior in ecologically valid and safe environments, while controlling the delivery of stimuli and maintaining standardized measurement protocols. Despite this potential, studies that compare virtual and real-world performance of complex daily activities are scarce. This study aimed to compare cognitive strategies and gait characteristics of young and older healthy adults as they engaged in a complex task while navigating in a real shopping mall and a high-fidelity virtual replica of the mall.MethodsSeventeen older adults (mean (SD) age = 71.2 (5.6) years, 64% males) and 17 young adults (26.7 (3.7) years, 35% males) participated. In two separate sessions they performed the Multiple Errands Test (MET) in a real-world mall or the Virtual MET (VMET) in the virtual environment. The real-world environment was a small shopping area and the virtual environment was created within the CAREN™ (Computer Assisted Rehabilitation Environment) Integrated Reality System. The performance of the task was assessed using motor and physiological measures (gait parameters and heart rate), MET or VMET time and score, and navigation efficiency (cognitive performance and strategy). Between (age groups) and within (environment) differences were analyzed with ANOVA repeated measures.ResultsThere were no significant age effects for any of the gait parameters but there were significant environment effects such that both age groups walked faster (F(1,32) = 154.96, p (1,32) = 86.36, p (1,32) = 95.71–36.06, p (1,32) = 13.40, p (1,32) = 19.77, p (1,32) = 11.74, p (1,32) = 7.6, p ConclusionsThis comprehensive, ecological approach in the measurement of performance during tasks reminiscent of complex life situations showed the strengths of using virtual environments in assessing cognitive aspects and limitations of assessing motor aspects of performance. Difficulties by older adults were apparent mainly in the cognitive aspects indicating a need to evaluate them during complex task performance.

Published
2020

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