ref : 2006.09.03 16:21 Turning
off filter in a brain
Yoro Takeshi, Japanese anatomist, also
suggested existence of a "filter" in a human
brain, in his book "バカの壁
(Baka no Kabe = wall of fool)". His explanation is expressed
in a simple equation.
y = a x
where "x" is input from nerves (e.g.
eyes), "y" is input to brain, and "a" is the
filter ("wall of fool" in his
expression). If a = 0, i.e. power of the filter is maximum, then
input from the eyes won't go to brain at all. Because any number
multiplied by zero equal zero even though the number is large. On
the other hand, if one can reduce power of the filter (a >>
0) then input to the brain increases.
He pointed out losing curiosity and interest increase power of the
filter.
Book : 養老孟司, バカの壁, 2003 (in Japanese)
Wikipedia : 養老孟司 (in Japanese)