Psych M1.4 Flashcards
Frontal lobe
thought processes, motor functions, insight and judgement/abstraction and decision making (executive functions)
Frontal lobe is
the largest most well developed lobe
Parietal Lobe
sensory and motor, interprets sensory information, right and left orientation
temporal lobe
auditory, connects with limbic system/ allows expression of emotional/sexual, aggresion
motivation, memory
occipital love
vision, interprets visual images
involved in language formation
basal nuclei (ganglia)
associated with complex motor functions
Limbic system
instincts, drives, fear, aggression (emotional brain)
Cerebellum
motor coordination and balance -cognition
Hypothalmus (part of the limbic system)
basic funcitons sleep-rest, temperature, thirst, hunger, sex
brainstem
regulator of respiration and heart rate
Increased Dopamine
Schizophrenia
Decreased Serotonin
Depression
Decreased Norepinephrine
Depression
Decreased y-Amniobutyric Acid
Anxiety Disorders
Decreased Acetylcholine
Alzheimer’s Disease
action potentials
when neurons are capable of detecting, processing, generating, and conducting electrical signals
neurotransmitters
chemical substance that is released by stimulated presynaptic cells that functions to activate post synaptic cells and this cause them to act as messengers in the central nervous system. Common neurotransmitters are acetylcholine, dopamine, norepinephrine, serotonin, and y-amniobutyric acid
function of the receptor
neurotransmitters either stimulates or inhibits the other cell
it is the interaction between the neurotransmitter and the receptor that allows the activity of one neuron to influence the activity of other neurons
Changes in affect, such as flattening Alteration in language production Alteration in motor functioning Impulse Behavior Impaired decision making Concrete thinking
Frontal
Altered sensory perceptions, such as decresed consciousness of pain sentation
Difficulty with time concepts, such as an inability to keep appointment times
Alteration in personal hygiene
Alteration in ability to calculate numbers
Inability to adequately perform common motor actions of writing
Mixing up the right and left
Poor attention span
Parietal
Auditory hallucinations Increased sexual focus Decreased motivation Alterations in memory Altered emotional responses Sensory Aphasia
Temporal
Visual Halluciantions
Occipital
Broca’s area
located in the left frontal lobe, the speech area
Wernicke’s area
specialized area of the temporal lobe and is responsible for organizing words so that they will be recognized and express the correct emotional content
basal nuclei
concentrations of cell bodies that are closely involved with motor functions and association
Monoamines
Dopamine
Norepinephrine
Serotonin
Histamine
Amino Acids
Glutamine
Gamma-Aminobutyric Acid (GABA)
Cholinergics
Acetylcholine
Neuropeptides
Substance P Somatostatin Neurotensin CRH Endorphin
Dopamine increase
Schizophrenia
Serotonin decrease
depression
Norepinephrine decrease
depression
GABA decrease
anxiety disorder
acetylcholine decrease
alzheimer’s
Computerized Tomography CT detects
a. lesions, infarct(tissue death), aneurysms
b. schizophrenia: cotrical atrophy, third ventricle enlargement, cognitive disorders
Magneti Resonance Imaging (MRI) detects
a. brain edema, ischemia, infection, neoplasm and trauma
b. schizophrenia: enlarged ventricles, reduction in temporal and frontal lobes
Positron-emission tomography (PET) detects
a. oxygen use, glucose metabolism, blood flow, some neurotransmitter interactions
b. schizophrenia: increased dopamine receptors, abnormalities in limbic system mood disorder; abnormalities in temporal lobe
c. adult ADHD: decreased utilization of glucose
Single photon emission computed tomography (SPECT) detects
a. similar to PET, also measures brain function and provides images of multiple layers of the CNS