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The biological approach to explaining OCD AQA
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The biological approach to explaining OCD notes taken from AQA textbook in relation to psychopathology in paper one of psychology, including evaluation.
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The explainingbiological approach to OCD
Genetic explain ations
Candidate eg : 51-11-1 D
genes
-
Researchers which candidate
have
identified specific genes create a
vulnerability for
OCD , called
genes .
serotonin
genes 51-11-1 D beta implicated the transmission of serotonin across
synapses
'
eg
: -
are in
'
Dopamine genes are also implicated in OCD +
may regulate mood
Both serotonin e and dopamine are neurotransmitters
OCD is
polygenic
OCD but several involved
is not caused by one
single gene genes are
[ 2013)
Taylor found evidence that up to 230 different genes may be involved in OCD .
Different types of OCD
one different group of cause disorder in
group of genes may cause OCD in one
person but a
genes may the another
person known
-
as a
etiologically heterogeneous
There is also evidence that
different types of OCD may be the result
of particular genetic variations , such as hoarding disorder and
obsession
religious
Neural explanations
LOW levels
of serotonin towers mood
Neurotransmitters are
responsible for relaying information from one neuron to another
For low levels serotonin transmission mood
information and
example if a person has
of then normal
of relevant doesn't take
place
-
mood Ct sometimes other mental
processes) is
affected
Decision -
making systems in
frontal lobes impaired
some OCD and in
particular hoarding disorder seem to be associated with impaired decision making
cases
of
-
,
.
,
bits)
This is turn
may be associated with abnormal
functioning of the lateral C. side
frontal lobes
of the brain .
The
grontou robes are responsible for logical thinking and making decisions
Parahippocampal gyrus dysfunctional
There is also evidence to
suggest that an area called the
left parahippocampal gyros , associated with processing unpleasant emotions ,
functions abnormally in OCD
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