The biology of depression essay

Every real or perceived threat to your body triggers a cascade of stress hormones that produces physiological changes. In a genetically vulnerable person, any stress a missed deadline at work or a medical illness, for example can then push this system off balance. This is supported by the observation that both acute and subchronic SSRI administration increases response to positive faces.

Biology Of Depression Term paper

More recent research suggests that there is indeed a subset of depressed people who have low levels of norepinephrine. For example, receptors may be oversensitive or insensitive to a specific neurotransmitter, causing their response to its release to be excessive or inadequate. Further research will be necessary before a complete understanding of why this treatment works emerges.

As suggested by the diathesis-stress model, it is likely that a genetic tendency or vulnerability to become depressed is actually transmitted from generation to generation.

Chemical neurotransmitter molecules are released. Authors suggested lifestyle factors, dysregulation of the HPA axis, immune system and autonomics nervous system as possible causes. If our prefrontal cortex is less active, then negative emotions such as depressed mood may be expressed more frequently and more intensely.

What causes depression?

Serotonin is produced by serotonergic neurons. When given a number of substances that normally induce the release of growth hormones, depressed patients did not respond positively.

Biology of depression

Fatigue, psychomotor poverty, and agitation may be assessed with locomotor activity, grooming activity, and open field tests. Serotonin helps regulate sleep, appetite, and mood and inhibits pain.

Non-suppression of dexamethasone is a common finding in depression, but is not consistent enough to be used as a diagnostic tool. A review found convergence of three phenomena: Even though this seems like a complicated set of steps, this entire information transmission cycle occurs in the brain within in a matter of seconds.

As California-licensed family therapist Eric Maisel, Ph. However, the evidence reviewed above suggests that antidepressant drugs do not exert a specific effect in depression. Depression should be treated as a disease and not as an everyday, regular emotion. Positron Emission Tomography PET allows scientists to determine the metabolic rates of the brain by measuring oxygen and blood sugar glucose utilization.

At present, these genes have not been identified and one reason may be that several genes contribute to the problem. Stress has its own physiological consequences.

Green arrows means stimulation and red arrows inhibition. Another false view about depression is that if it is severe, it has no treatment. He was the marketing and sales str. This question, is rather difficult to answer since studies have shown to support both the environmental and the biological perspectives.

CRH follows a pathway to your pituitary gland, where it stimulates the secretion of adrenocorticotropic hormone ACTHwhich pulses into your bloodstream.Saying depression is the common cold of mental illness does not take into account the various types and severity of depression.

Some research says depression is due to low serotonin levels, but no test can measure the amount of serotonin in the brain. The Causes Of Depression Psychology Essay.

Biology Of Depression - Neurotransmitters

Print Reference this. Published: 23rd March, Disclaimer: This essay has been submitted by a student. This is not an example of the work written by our professional essay writers.

Biology Of Depression - Genetics And Imaging

You can view samples of our professional work here. Biology Of Depression - Genetics And Imaging. Rashmi Nemade, Ph.D., Natalie Staats Reiss, Ph.D., and Mark Dombeck, Ph.D.

Genetics. For a long time, doctors have known that depression runs in families. Many individuals with depression can name other family members who also struggle with the same or similar illness. Biology Of Depression. Essay on Psychology, the Brain, and Depression Words | 3 Pages Psychology, as most know, is the study of the mind and personal or group thoughts, feelings, and emotions in humans and animals.

Depression is a common illness that inflicts millions of people worldwide. Although the causes are still being determined, growing evidence has lead scientist to conclude that biochemicals in the brain such as serotonin, hormones, and other factors l.

Bipolar Depression, also known as, Manic Depression, is yet another type of Depression. This type has very different symptoms than that of Major Depression or Dysthymia. The symptoms of Bipolar Disorder are having both very high and very low mood swings.

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The biology of depression essay
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