Brain Mapping Problems - How it is possible to produce robots, who move in space and time with all these problems?

This is taken from YouTube video when Jack Gallant, who is Chancellor's Professor of Psychology at the University of California at Berkeley, and who is affiliated with several other departments and graduate programs at UCB (EECS, Bioengineering, Neuroscience, Biophysics, Vision Science) talks about the problems with brain mapping. The video was produced one year ago and he estimated that 20 years at least will be needed to resolve the problems of measuring brain activity in space and time.

Part of the transcript beginning at 14:13
the brain is a nonlinear dynamical system and one of the important properties of these systems is that in order to understand the entire dynamical surface the sort of dynamical landscape you need to record in both space and time at very high resolution simultaneously but right now we don't have any methods that allow us to record in both space and time all the methods we have either sacrificed time or they sacrifice space so for example functional MRI the method that I showed you earlier in the talk it has fantastic spatial resolution but very poor temporal resolution because it measures metabolic signals changes in blood flow that are consequent to neural activity it doesn't measure changes in neural activity itself so when we're I cannot really recover any dynamic information a very common consumer method that is used to measure and decode brain activity oh today is electroencephalography EEG and the EEG has fantastic temporal resolution but it has horrible spatial resolution so although it can measure happening in time it does not know where those events came from in the brain so all the different maps that occur in the brain get all essentially mixed together and this is reduces the amount of information we can decode from EEG to just a few bits but we do know that brain measurement improves all the time because neuroscience community is very focused on improving measurement since measurement limitations are the main factor we have limiting our progress in neuroscience today so in the future we are going to end up with better brain measurement methods that will recover information in both space and time and at high resolution we don't know when this is going to happen it could be a decade it could be 20 years it could be 50 years down the road but at some point probably in the lifetimes of young people here there will be a brain decoding method that is cheap portable very powerful and that will become ubiquitous people will you know be able to just wear a brain hat around and to just wear a brain hat around and have their internal thoughts decoded all the time and this would have a very profound effect on society

Human brain mapping and brain decoding. | Jack Gallant | TEDxSanFrancisco
Published on Oct 31, 2017
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