Perception of a Haptic Stimulus Presented Under the Foot Under Workload

Area of Science:

• Neuroscience
• Human-Computer Interaction
• Sensory Perception

Background:

• The haptic channel is a viable medium for everyday communication.
• Understanding how cognitive load affects haptic perception is crucial for designing effective human-machine interfaces.

Purpose of the Study:

• To investigate if cognitive load alters the perception of vibrotactile stimuli.
• To determine the extent to which different dual-task conditions affect haptic perception.

Main Methods:

• Participants perceived vibrotactile stimuli presented under the foot.
• Cognitive load was induced using dual-task paradigms: single-task (at rest), counting forwards, counting backwards, and walking.
• Perception scores were compared across conditions.

Main Results:

• Cognitive load significantly influenced vibrotactile stimulus perception.
• Average perception scores were lower in dual-task conditions compared to the single-task condition.
• The walking task demonstrated the most significant reduction in vibrotactile perception.

Conclusions:

• Cognitive load, particularly during dynamic tasks like walking, impairs the perception of vibrotactile stimuli.
• This finding has implications for designing haptic feedback systems that account for user attention and workload.