GPS CELLS,AGAIN
WHAT IF
ARTIFICIAL GPS CELLS, ARE INSERTED IN ROBOTIC BRAINS?
In 2014: John
O'Keefe (British-American), Edvard Moser and May Britt-Moser (both Norwegian),
shared the Nobel Prize in Medicine and Physiology, for the discovery of neurons
constituents of a positioning system (GPS cells), located in the human
cerebral hippocampus. For those who thought that this finding only served to
guide us spatially externally and internally, the recent discovery of
additional functions of these cells means that we are just at the beginning of
a cognitive revolution of cyclopean proportions, of knowing the process of
generating hypotheses very close to the same human thought. The study was
conducted at the University of California, San Francisco by Loren Frank:
1-Frank and his team made
trained rats run by the central parts of W-shaped labyrinths,
while other researchers monitored their positional neurons (mappers of the
location of the rat). 2-When the rats were about to reach the other end
of the central part, where they would decide which place to turn (right or
left), the researchers noticed that the teta brain rhythm coincided with the firing of positional neurons, warning that as long as
the rat did not decide which direction to turn, the position cells for both
trajectories continued to fire simultaneously in the central arm of the
labyrinth. 3-As the rat approached the point where it should change
direction, it was expected that position neurons would continue to be
firing simultaneously in events called theta cycles. 4-Instead
and, until the rat turned, the position cells for each trajectory no longer fired simultaneously,
but in the form of alternate theta cycles. According to Frank and his team, the
sequences of firing of 125-milliseconds seemed to generate
different brain hypotheses about the immediate future of the rats in a
continuous, consistent and incredibly regular way, offering the animals,
different future hypothetical scenarios, which allowed them to weigh quickly and flexibly the different scenarios, choosing the best
option with opportunities to change options and even go back, useful option to confront natural predators. For
Frank, coding hypotheses is an explicit representation of the thinking and
theta cycles: fundamental computational units, which the hippocampus uses to
choose mostly abstract things, supported by previous experiences, adding that cyclical
firing
of position cells imply, the development of
cognitive faculties: imagination, planning and decision- making processes.
Labels: decision-making processes, GPS cells, place cells, theta rhytm
1 Comments:
Such an informative post I really like it carry on thanks for sharing
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