Biological Explanation Flashcards
Ao1:
How does imbalance of neurotransmitters in the brain cause depression
Because it effects the signals
Ao1:
What does low levels of serotonin do
Gives symptoms of depression such as low mood/ high anxiety as it is a calming hormone
What other monogamies does serotonin influence
Dopamine & noradrenaline
What are the side effects of having low dopamine
No longer getting enjoyment out of things
What are the side effects of having low levels of noradrenaline
Lack of embers / change in sleep
What happens if you have high levels of enzyme monoamine oxidase
This breaks down monoamines so you will have less of dopamine etc
How could the fault gene 5HTT gene cause depression
If it uses less serotonin when under pressure , it’s going to cause symptoms of despression
How’s it empirical / objective
Hormones are able to be measured
How does drevets support this explanation
Found reduced serotonin receptors- binding potential in patients
How do anti-depressants support this explanation
They increase monamines & work
How does Versiani support this explanation
Found Patients with noradrenaline reuptake inhibitors increases their mood
Krishnan & nestler
Animals & pet scans pint to the monamine hypothesis
Rosen et al
Urine in depressed people
What is the cause and effect issue
Can’t tell if the hormones cause depression or depression causes the hormones
How does Delgado conflict
Monoamines did not make symptoms worse
