Touch
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| show | perception of the position & movement of our limbs in space
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| show | perception mediated by kinesthetic & vestibular receptors
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| show | collective term for sensory signals frm the body
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| Epidermis | show 🗑
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| Dermis | show 🗑
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| Mechanoreceptors | show 🗑
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| Meissner corpuscle | show 🗑
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| show | specialized nerve ending assoc. w/slow-adapting (SA 1) fibers that have small receptive fields
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| Pacinian corpuscle | show 🗑
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| Ruffini ending | show 🗑
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| Kinesthetic | show 🗑
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| Muscle spindle | show 🗑
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| Thermoreceptors | show 🗑
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| Warmth fiber | show 🗑
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| Cold fiber | show 🗑
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| Nocioreceptors | show 🗑
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| A-delta fiber | show 🗑
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| C-fiber | show 🗑
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| show | route from the spinal cord to the brain that carries most of the info. abt skin temp. and pain
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| show | route frm the spinal cord to the brain that carries signals frm skin, muscles, tendons, & joints
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| Somatosensory area 1(S1) | show 🗑
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| Somatosensory area 2 (S2) | show 🗑
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| Somatotopic | show 🗑
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| Homunculus | show 🗑
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| show | sensation perceived frm a physically amputated limb of the body
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| show | ability of neural circuits to undergo changes in function or organization as a result of previous activity
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| show | jellylike region of interconnecting neurons in the dorsal horn of the spinal cord
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| show | region @ the rear of the spinal cord that received input frm receptors in the skin
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| show | description of the system that transmits pain that incorporates modulating signals frm the brain
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| Anterior cingulate cortex (ACC) | show 🗑
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| Prefrontal cortex (PFC) | show 🗑
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| show | decreasing pain sensation during conscious experience
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| Endogenous opiates | show 🗑
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| show | increased on heightened response to a normally painful stimulus
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| Two-point threshold | show 🗑
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| show | knowledge of the world that is derived frm sensory receptors in the skin, muscles, tendons, & joints, usually involving active exploration
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| Exploratory procedure | show 🗑
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| Tactile agnosia | show 🗑
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| show | coordinate system used to define locations in space
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| show | center of reference frame used to represent locations relative to the body
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| show | the impression of our bodies in space
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| Endogenous spatial attention; form of top-down control (knowledge-driven) of spatial attn | show 🗑
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| Exogenous spatial attention; form of bottom-up (stimulus-driven) spatial attn. in which attn. is reflexively directed toward the site @ which a stimulus has abruptly appeared | show 🗑
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| Tadoma | show 🗑
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| show | synthetic world that may be experienced haptically by operation of an electromechanical device that delivers forces to the hand of the user
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| Touch | show 🗑
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| show | refer to mechanical interactions when talking about touch and encompassing perception of temp. changes (thermal sensation), itchiness, & internal sensations (body in space)
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| show | perceive signals frm objects that are far frm the body, but we must almost always be in direct contact w/an object to perceive it by touch
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| show | located in the skin
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| How touch receptors function | show 🗑
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| show | responds to bursts of APs, 1st when its preferred stimulus its preferred stimulus is applied & then again. Doesn’t respond during the steady state b/w stimulus onset & offset
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| Slow-adapting receptors (SA 1&2) | show 🗑
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| show | consists of a nerve fiber & an assoc. expanded ending. These receptors fall under the category of A-beta fibers: wide diameters that permit very fast neural conduction
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| show | located @ the junction of the epidermis & dermis; and is FA type 1
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| show | located @ the junction of the epidermis & dermis; and is SA type 1
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| Pacinian corpuscle | show 🗑
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| show | embedded in the dermis & subcutaneous tissue; & is SA type 2
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| show | sustained pressure, very low frequency (<~5Hz); texture perception. Also spatial deformation which is helpful in pattern/form detection
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| FA 1 | show 🗑
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| FA 2 | show 🗑
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| SA 2 | show 🗑
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| Thermoreceptors | show 🗑
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| Nocioreceptors | show 🗑
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| show | (1) quick sharp burst of pain (2) throbbing sensation; reflect the onset of signals 1st frm A-delta fibers & then frm C-fibers
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| Spinothalamic pathway | show 🗑
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| Dorsal column-medial lemniscal pathway (DCML) | show 🗑
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| show | amputees often feel sensations in their phantoms arms & hands when their faces or remaining limbs are touched. Idiosyncrasy in homunculus
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| Hand & arms areas of S1“invaded” by neurons carrying info. frm touch receptors in the face | show 🗑
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| show | the ability to recognize objects through touch
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| “Where” | show 🗑
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| show | bottom-up pain signals frm nociceptors can be blocked via a feedback circuit located in dorsal horn. As gate neurons send excitatory signals sensory info. is allowed to go in but inhibitory signals frm the gate neurons cancel transmission to the brain
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| show | processes the raw sensory data frm S1 and S2 in such a way as to produce an emotional response
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| Secondary pain affect | show 🗑
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Ugly.Beauty
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