Sensation
requires
____________________
basic
steps
.
The
first
,
____________________
is
detected
by
____________________
____________________
and
converted
into
action
potentials
that
are
____________________
to
the
____________________
.
Then
nerve
tracts
convey
action
potentials
to
the
____________________
____________________
.
Then
action
potentials
reach
the
____________________
____________________
of
the
cerebral
cortex
where
action
potentials
are
translated
into
____________________
.
