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91 Cards in this Set
- Front
- Back
Shingles
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caused by the chicken pox virus
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Basic types of somatosensations
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Touch and pressure
Pain and Temperature Limb orientation and posture |
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Touch and pressure receptor
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mechanoreceptors
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Slowly-Adapting
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respond best to pressure
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Rapidly-Adapting
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respond to onset and offset of pressure
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Pacinian
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respond to very high frequencies
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NMDA receptor
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will normally bind to glutamate
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Nociception
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the perception of a stimulus that if continued will cause tissue damage
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Nociceptors
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small myelinated axons
small unmyelinated axons |
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Delta Fibers
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small myelinated axons
fast pain perception |
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C Fibers
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small unmyelinated axons
slow pain perceptions |
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Drugs that relieve pain
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opiates(heroin, morphine, codeine)
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Drug to give on overdose of heroin
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naloxone
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White part of they eye
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SCLERA
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Colored part of the eye
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Iris
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5 different neruons in eye
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retinal ganglion cells
amacrine cells biopolar cells horizontal cells photoreceptor cells |
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Rods(colors?)
(sensitivity?) |
most sensitive to light
black white gray |
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Cones(colors?)
(sensitivity?) |
Less sensitive to light
blue red green |
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Dry AMD
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drusen are deposited beneath the retina in the macula
Increase difficulty in reading |
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Wet AMD
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Inflitration of blood vessel that cause damage to retina
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Retinitis pigmentosa
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increasing loss of vision in the periphery.
Leads to tunnel vision |
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Glaucoma
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disease of eye that ends up killing cells of retina. glaucome unable to exit normally.
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Eyeball cut in the optic chiasm
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temporal visual field deficits in both eyes
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on-center/off-surround and off-center and on-surround @:
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Retinal ganglion cells
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LGN Cells
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similar on/off center and surround
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VI cells
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input layers, do get center-surround
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simple cells
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respond with on-bar
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Complex cells
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like oriented bars
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Hyper-complex
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end-stop inhibition
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neurons
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interneurons, projection neurons
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examples of slow neurotransmitters
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Dopamine
Serotonin Nor epinephrine AcH |
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Lower motor neuron
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These are the motor neurons in the ventral horn
of the spinal cord |
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Upper motor neuron
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These are the neurons in the brain or spinal cord
that are somehow involved in sending the signal to the ventral horn |
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"Cerebral cortex is
organized into different areas" |
Brodmann
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Human Primary sensory Areas
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Motor, Somatosensory, Auditory, Visual
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Slow neurotransmitters
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Dopamine, Serotonin, Norepinephrine, AcH
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Lower motor neuron
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These are the motor neurons in the ventral horn
of the spinal cord |
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Upper motor neuron
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These are the neurons in the brain or spinal cord
that are somehow involved in sending the signal to the ventral horn |
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Two mechanisms
also regulate dopamine action |
(1).specific re-uptake
autoreceptors (2) enzymes that break it down: (MAO) |
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Anatomical Divergence:
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One neuron provides input to many
post-synaptic neurons |
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Convergence:
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Many neurons converge and provide input onto a single post-synaptic neuron
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Endogenous Opiates
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Endorphins
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Retinitis Pigmentosa
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Peripheral, rod, fovea is spared
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MT
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responds to direction of motion and velocity of motion
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MST
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responds to optic flow stimuli
(SPEED OF LIGHT) |
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IT
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Responds to faces
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Eye Movements(2)
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Saccades
Smooth Pursit |
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Declarative Memory(?)
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Storing facts
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Declarative Memory(2 stages)
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Long term
Short term |
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Procedural
Memory |
How to?
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Echoic Memory
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Attention Span
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Anterograde amnesia
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loss of the ability to create memories after the event that caused the amnesia occurs
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Reterograde amnesia
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where someone will be unable to recall events that occurred before the development of amnesia
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Neurofibrillary tangles
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found within neurons in cases of Alzheimer's disease.
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Senile plaques
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extracellular deposits of amyloid in the gray matter of the brain.
Alzheimer's diseases |
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Epilepsy
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condition characterized by abnormal, recurrent, and excessive discharges from neurons. --seizures
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Associated with ADHD
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Oppositional Defiant Disorder (ODD)
Emotional Disorders |
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Attention Deficit Hyperactivity Disorder (ADHD)
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3-4years of age
Have to have all the symptoms all the time. Should rule out other things that look the same |
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Stimulants are an effective
treatment for ADHD |
Ritalin: block the reuptake of dopamine
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Obsessive Compulsive Disorder
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You obsess about something, which compels you to do something that you
know is irrational |
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Obsessive Compulsive Disorder
Treatments |
selective serotonin re-uptake
inhibitor (SSRI)(prozac) tricyclic antidepressants: affect the re-uptake of norepinephrine and serotonin |
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____ works
well to control both the mania and depression. |
Lithium (Li+)
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benzodiazapams
(how it works) |
Benzodiazapams mimic GABA
and bind to a specific GABA receptor. |
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Post-Traumatic Stress Disorder has two general types:
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Flashbacks or Amnesias
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The _______
feeds the brainstem |
The basilar artery
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A small lesion here will
result in a permanent vegetative state. |
paramedian mesodiencephalic
structures (PMD) |
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Schizophrenia
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Too much dopamine
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What helps you remember something ??
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Adenaline stimulating the amygdala
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aphasia
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loss of speech
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Corpus collosum
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axons from one side of the brain that connect to the other side of the brain
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• You can determine which hemisphere language is by giving the :
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WADA test
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• Wernicke's area gets input from
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visual cortex[reading]
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____ is activated when you think about how others are feeling
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MPFC
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Hemophilia
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Blood not clotting
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Transient Global Amnesia
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Defined as a sudden but transient retrograde and anterograde amnesia
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Herpes-Simplex Encephalitis
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Virus enters via the nose or mouth. Manages to somehow get into the central nervous system, and
primarily affects the temporal lobes |
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Agnosias
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A sudden inability to be able to remember certain things or how to do certain things
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Kluver-Bucy syndrome
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Loss of normal fear
Lack of ability to gauge trustworthiness |
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Hippocampus
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Needed to store memories
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Thalamus and Mammillary bodies
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Needed to retrieve the memories
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Amygdala:
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Make sure you remember the
important stuff |
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Deafness
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conduction and neural
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Neural Deafness:
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Something is wrong somewhere in the nervous system.
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neural deafness is from
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the hair cells or spiral ganglion cells
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Tinnitus
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the perception of sound within the human ear in the absence of corresponding external sound.
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Primary visual cortex (V1)
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processing information about static and moving objects and is excellent in pattern recognition.
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Visual area V2
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provide a complete map of the visual world
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Third visual complex, including area V3
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receiving inputs from V2 and from the primary visual area
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Visual area V4
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long-term plasticity, encodes stimulus salience, is gated by signals coming from the frontal eye fields,
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V5/MT
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play a major role in the perception of motion
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MST
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Viewing objects without implied motions
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