Brain plasticity: ‘visual’ acuity of blind persons via the tongue

@article{Sampaio2001BrainP,
  title={Brain plasticity: ‘visual’ acuity of blind persons via the tongue},
  author={Eliana Sampaio and St{\'e}phane Maris and Paul Bach-y-Rita},
  journal={Brain Research},
  year={2001},
  volume={908},
  pages={204-207}
}

Figures from this paper

A Proposed Tactile Vision-Substitution System for Infants who are Blind Tested on Sighted Infants
This article analyzes the attraction of stimulation produced by a visuotactile sensory substitution device, which was designed to provide optical information to infants who are blind via a tactile
‘Visual’ Acuity of the Congenitally Blind Using Visual-to-Auditory Sensory Substitution
TLDR
It is shown that congenitally fully blind adults can exceed the World Health Organization (WHO) blindness acuity threshold using SSDs, reaching the highest acuity reported yet with any visual rehabilitation approach.
Tactile–‘visual’ acuity of the tongue in early blind individuals
TLDR
This study compares the ‘tactile–visual’ acuity of the tongue for 15 early blind participants with that of 24 age-matched and sex-matched sighted controls and finds a larger proportion of early blind in the two highest visual acuity categories.
Intraocular retinal prosthesis
TLDR
Clinical trials have shown that a prototype epiretinal implant, despite having few electrodes contacting the retina, still allows test subjects to perform simple visual tasks.
Cross-modal plasticity revealed by electrotactile stimulation of the tongue in the congenitally blind.
TLDR
The data reveal that cross-modal plasticity in the blind develops rapidly and that the occipital cortex is part of a functional neural network for tactile discrimination in conjunction with the posterior parietal cortex, and show that the tongue can act as a portal to convey somatosensory information to visual cortex.
Cortical plasticity and preserved function in early blindness
...
...

References

SHOWING 1-10 OF 23 REFERENCES
Vision Substitution by Tactile Image Projection
WE describe here a vision substitution system which is being developed as a practical aid for the blind and as a means of studying the processing of afferent information in the central nervous
Is There a Critical Age for Using the Sonicguide with Blind Infants?
The ways in which blind babies and children use electronic sensory substitutes are related to their perceptual development. Previous studies suggested that there is a critical age—13 months—after
Plasticity of the sensorimotor cortex representation of the reading finger in Braille readers.
TLDR
It is suggested that reading Braille is associated with expansion of the sensorimotor cortical representation of the reading finger, and somatosensory evoked potentials evoked from the reading fingers are significantly larger.
Form perception with a 49-point electrotactile stimulus array on the tongue: a technical note.
TLDR
The goal is to develop a practical, cosmetically acceptable, wireless system for blind persons, with a miniature TV camera, microelectronics, and FM transmitter built into a pair of glasses, and the electrotactile array in a dental orthodontic retainer.
...
...