Abstract
Background: If human touch an object, even if they are blindfolded, they can reliably perceive its properties, such as temperature, material, length, height, texture and so on. In this study, we focused on investigating length perception, because length perception was an essential factor of object perception.
Objective and Methods: 15 young and 15 old subjects participated in this experiment. They were blindfolded during experiment and actively grasped the displayed length with thumb and index finger and then perceived it. Two working memory-related experiments, varied delay times experiment and n-back experiment were performed separately, in order to investigate whether length discrimination abilities of young and old subjects degraded with aging.
Results and Conclusion: With the increment of delay times, length discrimination threshold of both young and old subjects increased, delay times significantly affected length discrimination. No agerelated differences were found in varied delay times length discrimination experiment. However, we did confirm age-related differences in n-back length discrimination experiment.
Keywords: Working memory, length discrimination, age, delay times, n-back, blindfolded.
Graphical Abstract
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