about in this fulton county, georgia, investigation into donald trump and others meddling, trying to overturn the 2020 election results in georgia. what do we know about senator graham s request? senator graham is arguing, jake, that under the speech or debate clause, this is the clause of the constitution that protects lawmakers from certain judicial proceedings simply because of their doing their legislative duties. he said these conversations he had with georgia lawmakers after the 2020 election were protected under speech or debate. obviously, fani willis, the district attorney in atlanta there, in fulton county, says there are important parts of these conversations that possibly go to crimes that she s investigating, and therefore, are not shielded by this clause of the constitution. you remember, of course, jake, that a judge had previously ordered this and has been asked to take a second look to see whether some parts of this need to be changed. thanks so much. joi
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now they use magnetic energy, sound energy, and electric energy to try and actually change the brain or synchronize the brain waves which is what they re doing here. it s called transcranial alternating current. they direct some of the energy near the front of the brain over here, the prefrontal cortex, some further back, people wear a skull cap like what you see there, it s noninvasive so it doesn t hurt. you may feel a little heat or pressure. and they basically sort of target these waves called beta and gamma rays at the specific areas of the brain. what the goal was, these were people over the age of 65, was to have them remember, memorize word lists as they were going through this 20-minute session to try and see how much of a difference it made in terms of the memory. that s a study. they basically had a group of people who did this. a group of people who had the skull cap but did not get any of the specific energy directed at their brain and they wanted to
see the difference. how promising is it? well, it s interesting if you look at the results overall, again, small study, what they found was that people who had the specific gamma waves targeted at the front of their brain, sven of the 20 people in the group actually did improve in terms of longer term memory. people who had these other type of waves directed closer to the back of their brain, had short term memory improvement as well, 18 out of 20. it s early and it s not even clear does this memory they have for word lists extend to other parts of their lives or are they getting better at remembering words? these are the types of trials that need to happen, but they can say definitively based on the study, that type of transcranial current does make an impact on the brain. let s hope for more. dr. sanjay gupta, thanks so much. coming up, the proposal that would force every hotel in one of america s largest cities to offer empty rooms to people who are experiencing homelessness