Upgrade to remove ads
Pathophysiology - Neurobiology Of Schizophrenia, Mood Disorders,And Anxiety Disorders
Terms in this set (34)
"The Executive" or decision maker; regulation of behavior, e.g. planning, adaptation to change
Perception, interpretation, touch, body perception
What two parts of the nervous system play a major role emotions?
The autonomic nervous system.
The limbic system
The limbic system
It is a complex set of structures that lies on both sides of the thalamus, just under the cerebrum.
It appears to be primarily responsible for our emotional life, and has a lot to do with the formation of memories
is a small part of the brain located just below the thalamus
is mainly concerned with homeostasis
-regulating hunger, thirst, response to pain, levels of pleasure, sexual satisfaction, anger and aggressive behavior
consists of two "horns" that curve back from the amygdala.
It converts things in short-term memory into long-term memory
If the hippocampus is damaged, a person cannot build new memories, and lives instead in a strange world where everything they experience just fades away, even while older memories from the time before the damage are untouched!
are two almond-shaped masses of neurons on either side of the thalamus at the lower end of the hippocampus.
Plays a role for emotions of aggression, fear and sexual responses.
Alcoholism causes dampened activation in brain networks responsible for emotional processing, including the amygdala
"amygdala activation is observed when watching a horror film"
role in sleep (secretes melatonin) and consciousness
VTA (Ventral Tegmental Area) -midbrain
Consists of a group of neurons located close to the midline on the floor of the midbrain (mesencephalon).
The VTA is the origin of the dopaminergic cell bodies
It is widely implicated in the drug and natural reward circuitry of the brain.
It is important in cognition, motivation, orgasm, drug addiction, intense emotions relating to love, and several psychiatric disorders.
Basal Ganglia or Extrapyramidal System
Regulate motor behavior, appropriate muscle tone and posture
Balances excitatory and inhibitory neurotransmitters
Reticular Activating System
Regulates alertness and ability to pay attention (tune out some stimuli);
Allows us to fall asleep as well as wake up
Is the brain's "pleasure center,"
It is a cluster of neurons modulates the effects of the neurotransmitter dopamine, on which many neural circuits depend.
The nucleus accumbens is a link in the brain pathways that cause addiction and depression.
Damage to this region of the brain causes a lack of motivation and inhibits addictive behavior.
Sensory experiences that can't be verified by anyone other than the person experiencing them.
Any sense may be involved, but seeing or hearing things is the most common.
False, fixed beliefs that are not in keeping with the person's background.
Delusions remain fixed or persistent despite all evidence to the contrary.
For Example: Mrs Y refuses to eat her meals because she believes that her food is poisoned
Sudden episodes of intense dread.
Must be an irrational fear.
Schizophrenia is a serious mental illness that interferes with a person's ability to think clearly, manage emotions, and make decisions
Is characterized by thought disorders that reflect a break between the cognitive and the emotional sides of one's personality.
What are the symptoms of Schizophrenia? What are the positive symptoms? Negative symptoms? In children?
In children: poor social skills, a drop in grades, sleep problems, and irritability
-Those that appear with the disease.
-Delusions, disordered thoughts and speech, and tactile, auditory, visual, olfactory and gustatory hallucinations, typically regarded as manifestations of psychosis
-Are deficits of normal emotional responses or of thought processes,
-Are less responsive to medication
-Lack of emotion, poverty of speech, inability to experience pleasure, lack of desire to form relationships, and lack of motivation
What are things that can cause Schizophrenia?
-Involvement of several genes located on different chromosomes
-Having a history of family psychosis greatly increases the risk
-The unaffected identical twin has a roughly 50% chance of developing the disorder.
-Exposure to viruses or malnutrition before birth, particularly in the first and second trimesters increases the risk
Imbalance of CNS neurotransmitter:
-smoking marijuana increases the risk of psychotic incidents
Differences between a normal brain vs Schizophrenia
schizophrenic individual person has enlarged cerebroventricles and reduced hippocampal volume of the brain
Is a sustained emotional state
What are the categories of mood disorder?
Unipolar, Bipolar, mania
Are also called major depression or clinical depression.
Is the most common mood disorder; woman are more at risk.
Classifications: Depression with mania (Bipolar I) or depression with hypomania (Bipolar II)
3% to 5% of the population
Is characterized an elevated, expansive or unusually irritable mood, as well as notably persistent goal-directed activity is present.
Elevated concentrations of monoamines (dopamine)
What are the clinical manifestations of Depression?
Unremitting feelings of sadness and despair
Loss of appetite and body weight
Reduced interest in pleasurable activities and interpersonal relationships
List of Anxiety Disorders
Posttraumatic stress disorder (PTSD)
An anxiety disorder marked by minute to long episode of intense dread in which a person experiences terror and accompanying chest pain, choking and other frightening sensations.
It is a type of anxiety disorder in which a person fears and often avoids places or situations that might cause them to panic and make them feel trapped, helpless or embarrassed.
Persistent unwanted thoughts (obsessions) cause someone to feel the need to engage in a particular action.
Posttraumatic stress disorder
Flashbacks or nightmares following a person's involvement in or observation of an extremely stressful event.
Added conditions that appear with the disease.
Feelings or behaviors that are usually not present in a normal person.
Positive symptoms are thoughts, behaviors, or sensory perceptions present in a person with a mental disorder, but not present in people in the normal population.
Negative symptoms are thoughts, feelings, or behaviors normally present that are absent or diminished in a person with a mental disorder.
THIS SET IS OFTEN IN FOLDERS WITH...
17-19 Patho CVS
Neurobiology of Schizophrenia, Mood Disorders, and…
Patho ch 35
YOU MIGHT ALSO LIKE...
Patho neurobiology of schizophrenia, mood disorder…
Abnormal Exam 2
Psych Final: Modules 49-53
Disorders, Treatments, and Therapies
OTHER SETS BY THIS CREATOR
Calculations required formules
Disorders of Calcium & Phosphate
OTHER QUIZLET SETS
Nervous System Homework and Notes Quiz
Pyschology Exam 1 (Neuroscience)
NUR 330 Quiz 1
Neurophysiology VII - The CNS