2023-07-30 01:54:32
Luca Editorial Board Member
Written by: Dr. Daly Davis Presentation: Dr. Deepa Chandran
“I know your mind well.” We laugh when our friends say that. Then he said to the mind, “My heart knows the spear. Suddenly, a voice from the box in the friend’s hand said, “You know my heart.” My friend broke up. You are shocking. Scientific studies show that the days when this becomes true may not be long.
Scientists at the University of Texas in the United States have developed a system that can read minds using a machine that scans the brain and artificial intelligence (AI). fmri (Functional magnetic resonance imaging, fMRI) Brain scanning method is used for this. It is slightly different from normal image scanning. fmri Blood oxygen level dependent Or images according to BOLD are recorded in this way. As the cells use up oxygen, the oxygen in the blood decreases. Iron in deoxygenated blood is more magnetic. This is MR. I. Measured in the scan. Images change according to the words in our thoughts. This f.M.R.I. Images by A.I. Scientists have read people’s minds by converting them into words.
fmri Scan is nothing new. F is a technique used to study many functions of the brain and to understand diseases. MRI But there is a problem with that. It takes a while for the cells to function and produce oxygen-poor blood. Therefore, it takes up to 10 seconds to get images with less oxygen. Even images produced by the fastest scanner will have a time lag. Thus, the words obtained from the images obtained at a time difference will be completely confused; Like speech heard in a laggy WhatsApp video call.
This is where Chatji GPT using artificial intelligence comes to the rescue. Chat GPT can handle semantic meanings in spoken language. That is, when we say house, its definition is a building where people live as part of a family. To this Denotative The meaning is said. But the image or thought that comes to each person’s mind when they say home is different. These meanings are called connotative meanings. Semantic difference is the difference between denotative and connotative. A construct like ChatGTP can be useful to understand this difference. That is how many people can scan the thoughts that arise when they think of home in various ways and write it as home through Chat GTP.
Three volunteers underwent fMRI. The scanner recorded blood flow in their brains while they lay in the scanner and listened to a podcast for 16 hours. According to their thinking, the researchers developed a decoder that generates words from thought with the help of AI. After that another story or movie was shown and the fMRI scan was recorded. The words were converted into words with the help of a previously built decoder. To the researchers’ surprise, the thoughts while watching the movie and the decoded words were very similar. But if you think regarding other things while watching the movie, the decoder will be completely broken. A.I. You will be confused without understanding anything.
Understanding this state of mind using just a scanner without putting anything inside the brain is a huge milestone. People who cannot speak due to various diseases can understand what they are trying to say. And this new method of research can also understand many functions of the brain that are not yet understood. If you understand the mindset like this, it will be a complete mess. There are already opinions in the scientific world that tomorrow the police or the state will use this method to prove the truth and understand people’s minds. At present it is not possible to use mind-reading machines without the cooperation of people. The general opinion of the research world is that governments should be ready to take appropriate policies as such research progresses.
For further reading
Mind-reading machines are here: is it time to worry?
Semantic reconstruction of continuous language from non-invasive brain recordings
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