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New research on neuroplasticity, blind people can also recognize faces through audio

2024-02-27 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > IT Information >

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CTOnews.com, Nov. 29 (Xinhua) Neuroscientists recently launched a study on neuroplasticity (neuroplasticity) and found that blind people and people with normal vision use the same brain region to recognize basic faces, meaning that even if the face shape is transmitted by audio rather than through the visual cortex, the blind can theoretically recognize it.

DALL-E generation currently in academia, the consensus on face recognition is that there is a spot in the lower part of the inferior temporal lobe cortex, called fusiform facial region (FFA), which lights up when we see a face.

It is worth noting that the FFA of people born blind also respond to facial signals.

The Massachusetts Institute of Technology's 2020 study exposed blind people to a variety of 3D printed shapes, including faces, hands, chairs and mazes, and found that touching these small faces activated FFA in a similar way.

In the latest study, the neuroscience team at Georgetown University Medical Center recruited six blind people and 10 subjects with normal vision and began to train them with "sensory substitution devices."

This involves a head-mounted camera, blindfold goggles, a set of headphones and a processing computer, which takes input from the camera and converts it into audio, breaking the field of view into a 64-pixel grid. and provide its own auditory tone for each pixel.

The subjects spent 10 hours training the devices, learning to "see" with their ears while moving their heads. The cards will be presented in simple shapes; horizontal and vertical lines, houses of different shapes, geometry, and basic emoji styles of happy and sad faces.

It was a difficult training process, but in the end, all the subjects were able to recognize simple shapes with more than 85% accuracy.

When shape recognition tests were performed in functional magnetic resonance imaging (fMRI), subjects with normal vision and blindness showed activation of FFA when presenting basic facial shapes. Some blind participants were also able to correctly identify whether the face was happy or sad.

CTOnews.com attached the reference address of the paper: https://doi.org/10.1371/journal.pone.0286512

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