14 Rew i r e
Yo u r
B r a i n
The front portion of the cingulate cortex contains many spindle
cells that connect diverse parts of the
brain and are involved in
bonding and social communication.
Let ’ s say you are on your way to New Orleans for vacation when
you hear a radio report that Hurricane Katrina is about to hit the city.
Your spindle cells kick into action, and you immediately reroute
to Houston. Once you are in Houston, you hear that hundreds of
Katrina evacuees are being sent to the Astrodome,
so you decide to
spend part of your vacation volunteering in a soup kitchen there.
These were all snap decisions that were made in complex and
emotionally charged circumstances. Years later you may view that
vacation as one of your most rewarding and memorable.
Every time you remember that story, certain synaptic connec-
tions are strengthened and certain ones are weakened,
based on the
details that you remember. As you discuss the events that led you
to Houston, the story becomes modifi ed, and so does your brain.
Your friends may talk about the government ’ s poor response, and
other synaptic connections are made with those memories. You are
essentially rewiring your brain every time you review the story in
your mind.
Deep within the brain are two structures that are involved in
memory. One is the
amygdala
, named
after the Latin word for
“ almond, ”
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