The
article that I chose to write about talks about how there is probably a hormone
imbalance, more specifically talking about the hormone oxytocin released from
the posterior pituary gland, present in the brains of a large portion of psychopaths.
Oxytocin is thought to play a critical role in establishing bonds and trust
between individuals and is actually a hormone that is released during child
labor by the mother. Besides promoting the contractions needed during child
birth, oxytocin is thought to play a vital role in the first couple of moments
when the child is born between the mother and the newborn by creating a bond
between the two.
According
to the article, in a study published in the Journal of Neuroscience there were
reported notable changes in the form of impairments between the VTA prefrontal
cortex, which is responsible for regulating emotions and threats among other
things, and the amygdala, which is responsible for emotional processing between
inmates who committed similar crimes but where diagnosed as being psychopaths
or not. This suggests that psychopath’s brains are anatomically different and
that these anatomical differences may in part be responsible for their callous
behaviors by not allowing their brains to communicate in the same manner as the
brains of “normal” people.
A
hormone imbalance would seem to suggest that there is a structural difference
between the brains of “normal” people and those that have been diagnosed as psychopaths
and this is what James Fallon seems to suggest in his book. Like the article, Fallon
suggests that there is a link between form and function. Fallon has conducted
work using PET scans that have showed that psychopaths have less activity in
certain brain areas that are correlated with empathy and trust. While there is
not a lot of information known about how or why the brains of psychopaths react
differently to someone experiencing pain or being hurt, the PET scans suggest
that there is underlying changes at the neuroanatomical level.
While
there is still not a lot of data on this subject, current data suggests that
the brains of psychopaths are anatomically different from “normal” brains and
therefore function differently. In the future, as the article suggests, this
type of data could be used as evidence in court rooms and therefore may
influence the outcome of certain court cases. However, much more research needs
to be done according to Fallon as the PET scan that was done on his brain
showed similar results to the PET scan results on psychopath PET scans but yet
he has a family and has never committed a violent crime. So while Fallon’s work
might show that different parts of a psychopath’s brain is active during
certain situations as compared to a “normal” persons brain, there is probably
more than one factor that leads a psychopath to act in the way in which they
do.
Fallon,
J. (2013). The Psychopath Inside. New York: Penguin Group.
Stix,
G. (2012, December, 6). “Are Psychopaths “Brain Damaged?” Retrieved February
27, 2015, from http://blogs.scientificamerican.com/observations/2011/12/06/are-psychopaths-like-hannibal-lecter-brain-damaged/
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