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When a baseball player hits a home running off a 100 - mph smoke , how can the slugger ’s brain track such a fast - affect object ? Scientists may now have the answer .
In a new study , they discovered how the wit can predict the path of a moving object , even one traveling so quick mankind can barely see it .
Studying how visual information is processed helps scientists understand how the brain tracks objects in motion.
Vision scientist at the University of California , Berkeley , consider how the brainpower processes visual information , and turn up the specificregion of the brainresponsible for calculating where a moving object will most likely end up .
When human oculus see an object , it takes one - tenth of a arcsecond for the brain to process that information , said Gerrit Maus , a postdoctoral fellow in psychology at UC Berkeley , and go generator of the new study detail today ( May 8) in the journal Neuron . So how does the brain compensate for the slight delay ? [ 10 Odd Facts About the Brain ]
" The mind does not mean the target is in the position where the eye severalise us it [ that it ] is , " Maus told LiveScience . " The object is shift onward in the direction that it ’s moving , so we ’re actually prognosticate where things are going to be . "
This means the brain perceives moving object to be farther along in their flight than what a person in reality sees with their eyes , he explain .
" The fundamental job is that our brain does n’t puzzle out in real - time , " Maus suppose . " The brain really works rather slowly , liken to some electronics or data processor that we have today . Information that the wit receives from the eye is already out of day of the month by the meter it gets to the visual cerebral mantle . "
Maus and his colleagues studied the brains of six volunteers using functional magnetic resonance imaging ( fMRI ) , which indirectlymeasures brain activityby measuring alteration in the blood catamenia in the learning ability .
The unpaid worker ' brains were scan as they watched an illusion called the " heartbeat - drag outcome , " in which abbreviated flashes of light shift over a move background .
" The background knowledge is moving at the same sentence , so we comprehend the instant being sweep along by the question , " Maus excuse . " The brain construe the New York minute as part of the moving background , and therefore engage the prognostication mechanism to shift the position of the flash . "
In another part of the example , the light flashes over a still background . When the scientists liken thepatterns of neural bodily function , they institute that in both face , the action occurred in a region cry V5 , which is located in the halfway temporal region of the visual lens cortex — an area at the back of the head and to the side .
This suggests that the V5 part is involved in tracking moving objects , pushing them along in their trajectories so that a person , such as a baseball game player hop to hit a fastball , is not constantly process out - of - date information , the research worker sound out .
" What we perceive does n’t necessarily have that much to do with the real humanity , but it is what we ask to have it off to interact with the real world , " Maus read .
