Peripheral N.S.
What is the division of the nervous system that controls voluntary movements of skeletal muscles?
Somatic nervous system
What are the two types of general sensory receptors?
unencapsulated and encapsulated
What is sensation and perception?
sensation: the awareness of changes in the internal and external environments
perception: the conscious interpretation of those stimuli or how we respond to those stimuli
Dendrites on a neuron is an example of when receptor and generator potentials are the same/different
The same
T/F: during Sensory Adaptation, how big the action potential is determines how the brain perceives the information
false
What are the 12 pairs of nerves that emerge directly from the brain and are part of the PNS?
Cranial nerves
Name 2/3 of the encapsulated sensory receptors.
1. Free nerve endings of sensory neurons
2. Modified free nerve endings: Merkel discs
3. Hair follicle receptors
What is magnitude estimation?
ability to detect how intense the stimulus is
What happens when a graded potential reaches the threshold?
An action potential is generated
Photoreceptors adapting to bright sunlight is an example of what type of receptor
Phasic Receptors
Collection of neuron cell bodies located outside the brain and spinal cord
ganglia
Name 4/6 of the unencapsulated sensory receptors.
1. Meissner's corpuscles
2. Pacinian corpuscles
3. Ruffini's corpuscles
4. Muscle spindles
5. Golgi tendon organs
6. Joint kinesthetic receptors
What are the 3 main levels of neural integration?
2. Circuit Level
3. Perceptual Level
T/F: When the receptor is in a separate cell, Receptor potential = generator potential
False
T/F: Inputs from several receptors must be summed for perceptual detection to occur
true
Provide 3 examples of what the Autonomic Nervous System controls
Possible answers include: heart rate, blood pressure, digestion, respiration
Where are Pacinian corpuscles located?
subcutaneous tissue of the skin; dermal papillae of hairless skin (fingertips, soles of feet, eyelids, etc.)
What happens due to a smaller receptive field?
greater ability of brain to accurately localize the stimulus site
The generator potential occurs in which order neuron?
First-order neuron
What is an example of Tonic Receptors?
Anything where receptors DO NOT adapt to stimulus
If the bladder contracts, what division of the PNS are we looking at?
Parasympathetic Nervous System
What stimulus type are Ruffini's corpuscles?
deep pressure and stretch, slow and nonadapting
What is spatial discrimination vs. quality discrimination?
spatial: ability to identify site or pattern of stimulation
quality: Ability to differentiate submodalities
What must be released for cell to cell communication when the receptor is on a different cell?
Neurotransmitter
What does your brain perceive when you press on your eyeball?
Light; Because that pathway is labeled “vision.”