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Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which...

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Related Experiment Video

Updated: Nov 16, 2025

Brain-Computer Interface-controlled Upper Limb Robotic System for Enhancing Daily Activities in Stroke Patients

Brain-Computer Interface-controlled Upper Limb Robotic System for Enhancing Daily Activities in Stroke Patients

Published on: April 18, 2025

Brain-Machine Interfaces to Assist the Blind.

Maurice Ptito^1,2,3, Maxime Bleau¹, Ismaël Djerourou¹

¹École d'Optométrie, Université de Montréal, Montréal, QC, Canada.

Frontiers in Human Neuroscience

|February 26, 2021

Summary

This summary is machine-generated.

Sensory substitution and cross-modal plasticity help restore function after vision loss. These training-dependent brain adaptations utilize alternative senses and lead to rewiring for improved capabilities.

Keywords:

blindness cross-modal plasticity sensory substitution sensory substitution device visual prostheses

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Last Updated: Nov 16, 2025

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Area of Science:

Neuroscience
Ophthalmology
Biomedical Engineering

Background:

Vision loss is a significant disability, impacting a third of the brain's processing power.
Historical and modern efforts focus on restoring visual capacity through various means.
Understanding brain plasticity is key to developing effective visual aids.

Purpose of the Study:

To review sensory substitution and cross-modal plasticity in the context of vision loss.
To explore the history and evolution of assistive devices for the blind.
To examine the neural underpinnings and practical value of current and future technologies.

Main Methods:

Review of scientific literature on sensory substitution and cross-modal plasticity.
Historical analysis of blindness and assistive technologies.
Discussion of brain imaging findings related to neural reorganization.

Main Results:

Sensory substitution leverages alternative senses to compensate for vision loss.
Cross-modal plasticity demonstrates brain rewiring in response to sensory deprivation.
Both phenomena are dependent on user training and practice.
Modern technologies, including implants and non-invasive devices, offer new avenues for assistance.

Conclusions:

Sensory substitution and cross-modal plasticity are crucial concepts in vision restoration.
Technological advancements, supported by neuroimaging, are enhancing assistive devices.
Future research should focus on the practical value and efficacy of these technologies.