Psychology Test Review

Thursday

Lesions

Part of your brain that has been damaged

Strokes

When blood can’t reach a part of your brain.

What can we learn from injuries

What part of the brain does what.

Why do we have to depend on accidents instead of experiments

Moral way to learn more about the brain.

EEG

-alertness

-sleep

-measures electricity in brain

MRI

-head injuries

-symptoms of brain bleeds, strokes, tumors

-changes in brain

PET

Measures sugar glucose in brain to determine if brain is working

fMRI

Combines PET and MRI to create movie of actions happening in the brain over time, tracking changes in blood flow and oxygen levels.

Medule

Controls heartbeat and breathing

Pons

Unconscious movement, sleeping and dreaming

Reticular Formation

Motivation, pleasure

Thalamus

Relays messages from senses except smell

Amygdala

Aggression and fear/ fight or flight

Hypothalamus

regulates hormones, sweating, hunger/thirst

Hippocampus

Receives and stores memories of facts and events

Amygdala Hijack

-big feelings

-happens suddenly

-regret actions later

Cerebrum

processes thoughts, muscle memory, agility

Cerebellum

coordination of movement, balance

Frontal lobe

cognition, recent memory, planning, personality

Parietal lobe

body sensation

Temporal lobe

Hearing, interpreting noise

Occipital lobe

vision, imagination

Wernikes Area

ability to understand language

Broca’s area

ability to speak

Angular Gyrus

Convert symbols (#s and letters) into sounds. If doesn’t work=dyslexia

Motor Cortex

controls movement

Neurotransmission

1.depolarization

2.charge goes through axon helped my myelin sheath

3.charge goes to vesicle

4.vesicle releases neurotransmitters into gap

5.neurotransmitters go to receptors or get picked up by reuptake

SSRI

Selective Serotonin Reuptake Inhibitor, a class of antidepressants that increase serotonin levels in the brain.

Agonist

mimics neurotransmitters action, fire biological response, increases GABA

(ex. morphine) easy to OD

Antagonist

Blocks/ slows neurotransmitters action, stops biological response

(ex. Narcon) stops OD

Neurotransmitters

-serotonin

-dopamine

-epinephrine

-norepinephrine

-GABA

Serotonin

Mood, appetite, dreaming, sensory perception

Dopamine

positive mood

Epinephrine (aka adrenaline)

fight, flight, freeze response, speeds blood system

Norepinephrine

Alertness and attention

GABA

calms people down, most affected by alcohol

Glutamate

excitatory transmitter

Parasympathetic system

relaxation in the body

Sympathetic Nervous system

fight or flightresponse to stress and danger

Hormones

-Adrenaline

-Oxytocin

-Cortisol

-Ghrelin/leptin

-melatonin

-testosterone

Adrenaline

prepares body for emergencies (fight or flight response)

Oxytocin

love hormone

Cortisol

maintain homostasis, stress hormone

Ghrelin/leptin

appetite regulation

Melatonin

sleep regulation

Testosterone

growth hormone, aggression and strength