Between-Tactor Display Using Dynamic Tactile Stimuli for Directional Cueing in Vibrating Environments

Eguchi, Ryo; Vacek, David; Okamura, Allison M.

doi:10.1109/toh.2023.3304953

Cited by 1 publication

(2 citation statements)

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“…Tactile feedback refers to the passive sensitivity experienced through touch receptors [1] and tactile memory is the storage and retrieval of information received through the sense of touch [2]. Tactile cues can improve the human-machine interface and help in the execution of tasks, leaving the visual and auditory channels free during the execution of tasks [3]. This approach has been used in many fields, including aerial and terrestrial [4] navigation [5] and teleguidance navigation assistance for visually impaired people [6].…”

Section: Introductionmentioning

confidence: 99%

“…Tactile memory has been investigated in the hands [3,14], measuring, for example, recognition accuracy and task performance. Yet, the tactile memory of the human back has never been investigated and could be a means for improving directional awareness as the back has the largest surface area and encoding directional information is possible through the back.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Directional Tactile Memory of the Back of the User on Reaction Time and Accuracy

Elshafei,

Romano,

Fahim

2024

Electronics

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Tactile memory is the cognitive process of storing and recalling information that has been perceived through the sense of touch. Directional tactile memory involves the encoding and retrieval of sensory data associated with a tactile experience, allowing individuals to remember and recognize directional information encoded through the sense of touch. A new method for providing directional tactile feedback, at the back of the user, has been developed to investigate the efficacy of directional tactile memory, its decay over time, and its impact during a concurrent cognitive task. Two experiments were presented. In the first experiment, tactile memory deterioration, with a visual or a tactile cue, was tested with different action-cue latencies (10 s and 20 s). In the second experiment, we considered tactile memory deterioration when there was an increased cognitive load as the participants played Tetris. Forty volunteers participated in the two experiments using purpose-built tactile seats with nine motors controlled by an Arduino. The performance data (error and reaction times) were analyzed statistically, and a NASA task load index (NASA-TLX) questionnaire was administered to measure the subjective workload after each of the two experiments. The findings highlighted that the directional tactile memory of the back can guide individuals to the correct point on the screen and that it can be maintained for at least 20 s. There was no statistically significant difference in the number of errors or reaction time with a visual or tactile action cue. However, being involved in a concurrent cognitive task (playing Tetris) adversely affected the reaction time, the number of errors, and the directional tactile memory, which degraded as the time between the directional cue and the action cue increased. Participants perceived the performance while playing Tetris as significantly more mentally and perceptually demanding, requiring more mental and physical effort and being more frustrating. These trials revealed a new potential for a human–machine interface system, leveraging directional tactile memory, which might be utilized to increase the safety of autonomous vehicles.

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