Psychosurgery- Biological therapy Flashcards
(23 cards)
Who developed the idea of psycho-surgery?
Egas moniz
When did Egas Moniz develop psychosurgery?
1935
When was Egas Moniz the nobel prize winner for his work on psychosurgery?
1949
What was psychosurgery origionally known as?
Prefrontal leucotomy
What did Egas claim?
The removal of the frontal lobe would result in the reduction of aggression and distress
What did Egas do in his therapy?
destroyed nerve fibres in the frontal lobe which were impulse control and mood regulators
What does it involve?
destroying parts of the brain
aim of psycho-surgery
- eradicate the undesirable behavior
- relieve stress, anxiety and depression
define the term ‘psycho-surgery’
the process of removing or destroying function of the brain in order to bring about change in behavior
Deep brain stimulation (DBS)
- possible alternative to psycho surgery
- involves the treading of wires through the skull
Stereotic psycho- surgery
involves the use of brain scans such as MRI scans to locate the precise points within the brain and sever connections very precisely
Risks of psychosurgery
- seizures
- memory loss
- altered states of mood
- death- 6%
Examples of conditions which psycho surgery can be used to treat
depression, anxiety, OCD, bipolar disorder, schizophrenia
What assumptions is it linked with?
- Neurotransmitters
- Localisation of brain function
How is it linked to the neurotransmitters assumption?
- Modern methods of psycho-surgery involve stimulating areas of the brain, effecting neurotransmitters
- Low levels of neurotransmitters are linked with mental disorders e.g. serotonin
How is it linked to the localisation of brain function assumption?
It involves destroying of certain areas of the brain e.g the frontal lobe due to their functions
2 points for the positive
- last resort/mental health act
- lesser of two evils
The mental health Act
- made it impossible for the therapy to occur without valid, informed consent from the patient
- only done in the last resort
How is the therapy the lesser of two evils?
- better than doing nothing at all
- For example, if someone is chronically depressed and is at risk of suicide, it is better than doing nothing
- better to do this if nothing else is working for the individual
What are the 2 negative points of psycho- surgery?
- early psychotherapy
- cannot be reversed/ Mary Lou Zimmerman
early psycho- surgery as a negative
- ineffective and innaproppriate
- had a fatality rate of up to 6%
- range of severe side effets such as brain seizures and loss of emotional responsiveness
- although psychosurgery today has improved, the same objections could still apply
Cannot be reversed/ Mary Lou Zimmerman
- controversial treatment
- number of cases of severe injury arsing from it
- for example, the case of mary-lou zimmerman
- even modern psychosurgery can have long-term side effects, particulalrly to their cognitive capabilities such as memory
pre-frontal lobotomy procedure
holes are drilled into the sides of the skull. a leucotome, is inserted into the frontal lobe and rotated to lesion a core of tissue. this is repeated several times to destroy pieces of frontal cortex.