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Effect of age on the line bisection test
T Fujii1, R Fukatsu, A Yamadori
1Division of Disability Science, Tohoku University Graduate School of Medicine, Sendai, Japan.
Journal of Clinical and Experimental Neuropsychology
|December 1, 1995
Summary
Older adults show a rightward bias on the line bisection test compared to younger individuals. This age-related difference in spatial attention may reflect hemispheric functional changes.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Human Aging Research
Background:
- The line bisection test is a common tool for assessing spatial attention and neglect.
- Age-related cognitive changes can impact performance on various neuropsychological tests.
Purpose of the Study:
- To examine the influence of age on performance in the line bisection test.
- To determine if different age groups exhibit variations in spatial bias.
Main Methods:
- 108 healthy, right-handed participants across three age groups (young, middle, old) completed a line bisection task.
- Each participant bisected lines using both their left and right hands.
- Performance was analyzed based on age group and hand used.
Main Results:
- The older age group demonstrated a significant rightward bias in line bisection compared to the young and middle age groups.
- No significant difference in performance was observed between the young and middle age groups.
- The findings suggest an age-related shift in spatial attention.
Conclusions:
- Age significantly affects spatial attention, as evidenced by increased rightward bias in older adults on the line bisection task.
- Results support theories of age-related asymmetrical decline or maturation in hemispheric functions.
- Further research is needed to explore the neural underpinnings of these age-related spatial attention differences.