Somatosensation
Sensory receptors that signal info about the temperature as measured on the skin.
What are Thermoreceptors?
SAI mechanoreceptors that are important for touch perceptions of pattern and texture. Response to continued pressure
What are Merkel cells.
Small receptive fields = high spatial sensitivity
thermoreceptors that fire in response to warmer temperatures (above 97°F) as measured on the skin
What are Warm fibers? (SLOWER)
The type of process involved in attention.
What is active!?
The perception and unpleasant experience of actual or threatened tissue damage.
What is Pain?
This term describes the perception of the position and movement of our limbs in space
Propioception
SAII mechanoreceptor important for object grasping
Ruffini endings
Sustained response to continued pressure
Larger receptive fields = lower spatial sensitivity
thermoreceptors that fire in response to colder (86°F and below) temperatures as measured on the skin
What are Cold fibers? (FASTER)
This type of attention involves restricting processing to a subset of the possible stimuli.
Selective
Touch/tactile receptors are classified as these types of receptors.
What are mechanoreceptors ?
because they respond to mechanical stimulation or pressure.
This refers to the active use of touch to identify objects
haptic perception
FAI mechanoreceptor important for maintaining grip/ detecting "slip"
Meissner corpuscle endings
Response to start/end of stimulus
Small receptive fields = high spatial sensitivity
Important for maintaining grip
myelinated nociceptors that conduct signals rapidly and respond to both heat and pressure
A-delta fibers
A state of vigilance. Scanning our surroundings & not attending to any particular stimulus.
What is Alertness?
Awareness=
An active thought about something.
Can be physically present or just in our imagination
Touch receptors can be found in these two areas of the skin.
What is the dermis & epidermis
A pathway for the mechanoreceptors (tactile perception) and proprioceptors (muscle position).
Dorsal column-medial lemniscal pathway (DCML)
FAII mechanoreceptors important for fine motor control
Pacinian corpuscle endings
Response to start/end of stimulus
Small receptive fields = high spatial sensitivity
unmyelinated nociceptors that are slower and respond to pressure, extreme degrees of either heat or cold, and toxic chemicals
What are C-fibers?
If you point your eyes at the board while also directing attention to the board, you are engaging in this type of attention.
What is overt attention?
A phenomenon in which people fail to perceive an object or event that is visible but not attended to. Gorilla video!
What is Inattentional Blindness?
The difficulty we experience in detecting differences between two visual stimuli that are identical except for one or more changes to the image.
What is Change Blindness?
A condition in which a person fails to attend to stimuli on one side of the visual world (usually the left) as a consequence of neurological damage to the posterior parietal lobe.
What is Hemispatial Neglect?
The 4 main receptor cells are "........" meaning they transmit signals extremely quick.
What is Myelinated?