Related Experiment Video
Updated: May 31, 2026
19:44
A Tactile Automated Passive-Finger Stimulator (TAPS)
Published on: June 3, 2009
Tactile communication systems optimizing the display of information.
1Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA. ljones@mit.edu
Progress in Brain Research
|July 19, 2011
Summary
Tactile communication systems use vibrotactile signals to convey information, aiding individuals with sensory impairments. Research shows that tactile patterns, or tactons, can be accurately identified by varying location, number, and timing, demonstrating potential for effective tactile displays.
Area of Science:
- Human-Computer Interaction
- Sensory Substitution
- Haptics and Vibrotactile Perception
Background:
- Tactile communication systems leverage vibrotactile signals for sensory substitution, aiding individuals with visual, auditory, or vestibular impairments.
- These systems also assist in spatial orientation and navigation, addressing challenges in information overload.
- A key challenge lies in identifying optimal tactile information types and stimulation parameters for effective communication.
Purpose of the Study:
- To explore the potential of vibrotactile signals in tactile communication systems.
- To determine which stimulus dimensions and ranges are effective for creating tactile patterns (tactons).
- To assess the learnability and effectiveness of tactile communication systems.
Main Methods:
- Conducted psychophysical studies on vibrotactile perception to establish a framework for tacton design.
- Performed experiments measuring participant identification of tactons presented at various body locations.
- Investigated tactons created by varying spatial location, number, and temporal activation sequences of motors in tactile displays.
Main Results:
- Participants accurately identified tactons created by manipulating spatial location, number, and temporal activation patterns.
- Demonstrated the potential of two-dimensional tactile displays for information presentation.
- Confirmed the feasibility of developing easily learned tactile communication systems.
Conclusions:
- Vibrotactile displays can effectively convey information through well-defined tactons.
- Spatial and temporal parameters of vibrotactile stimulation are crucial for accurate tacton recognition.
- Tactile communication systems show promise for sensory substitution and enhanced navigation.
Related Concept Videos
01:23Design Example
The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
01:14Design Example: Resistive Touchscreen
A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
When a user touches the screen, the two layers make contact at a specific point known as the touchpoint. This contact reduces the resistance between...
When a user touches the screen, the two layers make contact at a specific point known as the touchpoint. This contact reduces the resistance between...
01:15Techniques of therapeutic communication I: Active Listening, Sharing Observations, Validation, and Using Touch
The history of therapeutic communication can be traced back to Florence Nightingale, who emphasized the importance of developing trusting relationships with patients. She taught that the presence of nurses with patients results in therapeutic healing.
Therapeutic communication is not the same as social interaction. Social interaction has no goal or purpose and consists of casual information sharing, whereas therapeutic communication has a plan or purpose for the conversation. Therapeutic...
Therapeutic communication is not the same as social interaction. Social interaction has no goal or purpose and consists of casual information sharing, whereas therapeutic communication has a plan or purpose for the conversation. Therapeutic...
01:27Tactile and Chemical Senses
Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex. This...
01:15Sensory Modalities
Sensation typically is the process by which the sensory receptors and sense organs detect stimuli from the internal and external environment and transmit this information to the central nervous system for processing.
General senses refer to the broad category of sensory information detected by receptors in the body and can be further grouped into somatic and visceral senses. Somatic sensations include touch, pressure, temperature, and pain and are essential for navigating our environment and...
General senses refer to the broad category of sensory information detected by receptors in the body and can be further grouped into somatic and visceral senses. Somatic sensations include touch, pressure, temperature, and pain and are essential for navigating our environment and...
01:03Communication
Communication between two animals occurs when one animal transmits an information signal that causes a change in the animal that receives the information. Organisms communicate with one another in a host of different ways. Signals can be auditory, chemical, visual, tactile, or a combination of these. Communication is a critical behavioral adaptation that promotes survival, growth, and reproduction.