SAD

HideShow resource information
Infradian Rhythms SAD: What?
A seasonal depression that normally occurs during the winter months- when there are lower light levels.
1 of 6
Infradian Rhythms SAD: Why?
Is possibly cause by low light levels during the winter, causing excessive amounts of melatonin in some people- causing depressive symptoms.
2 of 6
Infradian Rhythms SAD: Evaluation: Light? +-?
The symptoms of SAD can be reduced by sitting patients in front light boxes for at least 1hr per day. lowers the levels of melatonin which in turn reduces the depression.
3 of 6
Infradian Rhythms SAD: Terman et al?
Terman et al (1998). 124 participants with SAD. 85 given 30 minute exposure to bright light, Another 39 were exposed to negative ions (a placebo group).
4 of 6
Infradian Rhythms: Evaluation: Terman et al findings?
60% of the am bright light group showed significant improvement compared to only 30% of those getting light in the evening. Only 5%of the placebo group showed improvement. light as a EZ.
5 of 6
Infradian Rhythms: Evaluation: Research? +-?
Research shows it is more common further away from the equator where winters are darker (northern hemisphere). –a study in Iceland didn’t confirm this.
6 of 6

Other cards in this set

Card 2

Front

Is possibly cause by low light levels during the winter, causing excessive amounts of melatonin in some people- causing depressive symptoms.

Back

Infradian Rhythms SAD: Why?

Card 3

Front

The symptoms of SAD can be reduced by sitting patients in front light boxes for at least 1hr per day. lowers the levels of melatonin which in turn reduces the depression.

Back

Preview of the back of card 3

Card 4

Front

Terman et al (1998). 124 participants with SAD. 85 given 30 minute exposure to bright light, Another 39 were exposed to negative ions (a placebo group).

Back

Preview of the back of card 4

Card 5

Front

60% of the am bright light group showed significant improvement compared to only 30% of those getting light in the evening. Only 5%of the placebo group showed improvement. light as a EZ.

Back

Preview of the back of card 5
View more cards

Comments

No comments have yet been made

Similar Psychology resources:

See all Psychology resources »See all Sleep resources »