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Melaina Neal…read more

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Here is just a few key points, just to get our
minds remembering..
- Humans are adaptable and have successful
colonised all but the most of the
unwelcoming regions of the world and are
able to cope with extremes of temperature.
- Humans are rhythmic and are also sensitive
to rhythms around us.…read more

Slide 3

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· Seasonal affective disorder or SAD affects a
number of people each year.
· SAD is a serious depression as autumn
approaches and the shorter days set in, then
recovering when spring and stronger
daylight come back.
· SAD is a serious clinical condition; it is far
worst then the lowering of moods that many
people get on an overcast or dull day.…read more

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· The Pat Moore case study suggests that the
brain is very sensitive to light and day
length, it can respond rhythmically
positively or negatively. A negative response
would produce SAD.
· Therefore some patients of Seasonal
Affective Disorder with the right sort of
light, by using this extra light, the negative
effect can sometimes be countered however
this is a temporary treatment but helps
many reclaim their lives back.…read more

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- A drawback of this research is that it was a
single case study and generalisation should
be cautious. However the results could
possibly be due to the `placebo' effect, the
fact that Pat expected the light therapy to
benefit her might explain her recovery.
- Booker and Hellekson found an incident of
9% in Alaska, where the sunlight is restricted
and also has low light levels during the
winter months. This research confirms the
link between lack of daylight and SAD.…read more

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-Feadda, Tondo, Teicher, Baldessarini,
Gelbard and Floris found similar numbers of
SAD in a retrospective study of seasonal
mood disorder in Italy, known for its
sunshine in both summer and winter. It is
possible this study was flawed insofar as it
was retrospective and therefore memories
may have been distorted.
If there really is a significant occurrence of
SAD in sunny countries then this condition
is far more complex.…read more

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