S&P Ch 13
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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the sensations caused by mechanical displacement of the skin | show 🗑
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perception of the position and movement of our limbs in space | show 🗑
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show | proprioceptors
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collectively, sensory signals from the skin, muscles, tendons, joints, and internal receptors | show 🗑
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wide-diameter, myelinated sensory nerve fibers ◦ Transmit signals from proprioceptive receptors in muscles and tendons | show 🗑
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(slightly less) wide-diameter, myelinated sensory nerve fibers ◦ Transmit signals from mechanical stimulation | show 🗑
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show | a-delta fibers
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show | c-fibers
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show | a-alpha, a-beta, a-delta, C fibers
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sensory receptors that respond to mechanical stimulation (pressure, vibration, movement); connect to a-beta fibers ◦ Include SA I (Merkel), FA I (Meissner), SA II (Ruffini), and FA II (Pacinian) | show 🗑
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sensory receptors that play an important role in sense of where limbs are, what kinds of movements are made ◦ Connect to A-alpha fibers and A-beta fibers | show 🗑
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show | thermoreceptors
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show | nociceptors
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show | tactile, thermal, pain, itch
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each fiber type from the skin codes a particular touch sensation | show 🗑
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carries most of the information about skin temperature and pain (slower) | show 🗑
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carries signals from skin, muscles, tendons, and joints (faster) | show 🗑
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show | homunculus
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the impression of our bodies in space | show 🗑
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pain sensations are triggered by ____ | show 🗑
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a region of the brain associated with the perceived unpleasantness of pain sensations | show 🗑
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show | prefrontal cortex
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a description of the system that transmits pain that incorporates modulating signals from brain; bottom-up pain signals from nociceptors can be blocked via a circuit located in spinal cord; neurons in dorsal horn actively inhibit pain transmission | show 🗑
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decreasing pain sensation during conscious experience | show 🗑
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show | hyperalgesia
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decreasing pain sensation when people think they’re taking an analgesic drug but actually are not | show 🗑
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increasing pain sensation when people expect pain | show 🗑
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show | phantom limb
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show | neural plasticity
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show | two-point threshold
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knowledge of the world that is derived from sensory receptors in skin, muscles, tendons, and joints, usually involving active exploration ◦ For instance, aligning the arrows and opening a child-proof aspirin bottle in the dark | show 🗑
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geometric properties of objects are most important for visual recognition | show 🗑
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the inability to identify objects by touch; caused by lesions to parietal lobe | show 🗑
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show | the "where" system of touch
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the coordinate system used to define locations in space | show 🗑
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the center of a reference frame used to represent locations relative to the body | show 🗑
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show | thermoTRP
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show | dorsal horn
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referring to spatial mapping in the somatosensory cortex in correspondence to spatial events on the skin | show 🗑
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a system that attempts to closely mimic biological signals | show 🗑
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show | endogenous
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show | exogenous
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