Mood Disorders Flashcards
(40 cards)
2 types of depression?
Unipolar
Bipolar
How many people are affected by unipolar depression?
5-7%, most commonly in middle-old age
What’s the diagnosis for unipolar depression?
5 symptoms for 2+ weeks
NO history of mania
What are emotional symptoms of unipolar depression?
Sadness
Loss of pleasure
Irritability
What are cognitive symptoms of unipolar
Poop memory/concentration
Sleep disturbances
Suicidal thoughts
What are physiological symptoms of unipolar depression?
Sleep disturbances
Headaches
Sickness/stomach aches
What are behavioural symptoms of unipolar
Withdrawal from social life
Loss of libido
Poor work performance
What are emotional symptoms of bipolar depression
Euphoria
Extreme happiness
Lack of guilt
Social inhibition
What are cognitive symptoms of bipolar depression
Delusions Ideas
Reckless decision making
What are behavioural/physiological symptoms of bipolar
High energy
Increased work levels
Social and sexual activity
diagnosis of bipolar depression?
One major depressive episode followed by one mania episode
May be long term or swing between periods.
Must impair function and cause high stress
Biological explanation- genetics
Family history doubles the likelihood of the development of mood disorders.
Thought to be the result of multi gene action.
What is mcguffins study?
Bipolar- investigated the genetic predisposition idea.
Looked at twin studies and Compared them. MZ- 46% and DZ- 20%
Shows genetic influence
Biological explanation- genetics
Family history doubles the likelihood of the development of mood disorders.
Thought to be the result of multi gene action.
What is mcguffins study?
Bipolar- investigated the genetic predisposition idea.
Looked at twin studies and Compared them. MZ- 46% and DZ- 20%
Shows genetic influence
What biochemicals are found in the limbic system?
Noradrenaline and serotonin
What do noradrenaline and serotonin do?
Found in the limbic system of people with depression. Affects sleep/appetite and emotions. And imbalance, too low causes depression, too high- mania
What was shastrys study?
Found that during a manic episode, serotonin levels are low and noradrenaline levels are high. During a depressive episode, both are low
What was teutings study?
Tested the samples of urine in those with depression. Tested the levels of a compound which is present after neurodrenaline and serotonin are broken down. Those with depression had lower levels of the compound suggesting lower than normal levels in the brain
What hormone is high in the blood of those with depression?
Cortisol- usually present in stressful situations however was still high in those with depression even after the stressful event had passed
What areas are affected by depression? (Brain abnormalities)
What prefrontal cortex
Amygdala
Hippocampus
Evaluation of the biological explanation for mood disorders
❌unclear whether brain abnormalities are a cause of effect
❌ teutings study- low levels could be the effect of mood disorders rather than the fair
❌not 100% concordance in twin studies- environmental input
❌ no single gene detected
❌ deterministic- saying people have a brain defect etc could prevent recovery as people lose hope
What does the cognitive explanation say causes depression?
People become depressed as they think in negative and self- defeating ways
what are the 4 ways of thinking with depression that beck proposed?
Overgeneralisation- one negative event means everything is negative
Magnification- blowing things out of proportion
Select perception- perceiving only bad events
Absolute thinking- everything has the be perfect otherwise it’s a disaster