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39 Cards in this Set

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  • Back
The "body sense" in which input from the skin, muscles, tendons, and vestibular system, results in the perception of the body.
The sense of the position and movement of the limbs
Receptors that respond to mechanical stimulation such as pressure, stretching, and vibration.
A disk-shaped receptor located near the border between the epidermis and the dermis.
Merkel Receptors
Responds best to fine details
Merkel Receptors
A stack of flattened cells located in the dermis just below the epidermis.
Meissner Corpuscle
Responds to fluttering (slowly changing) stimuli on the skin and is also controlling hand-grasp.
Meissner Corpuscle
Many-branched fibers inside a roughly cylindrical capsule.
Ruffini Cylinder
Responds to the stretching of stimuli.
Ruffini Cylinder
A layered, onion-like capsule that surrounds a nerve fiber; located deep in the skin; can also be found in other places such as the intestines and joints.
Pacinian Corpuscle
Responds to rapid vibrations and fine textures sensed by moving the fibers across a surface.
Pacinian Corpuscle
Fibers associated with the Merkel and Ruffini receptors; they fire continuously, as long as pressure is applied.
Slowly Adapting (SA) fibers.
Merkel (SA1), Ruffini (SA2)
Fibers associated with the Meissner receptor and Pacinian corpuscle; they fire only at the onset and offset of stimulation.
Rapidly Adapting (RA) fibers.
Meissner (RA1), Pacinian (RA2)
Has large fibers that carry signals related to sensing the position of the lmbs and perceiving touch.
Medial Lemniscal Pathway
Consists of smaller fibers that transmit signals related to temperature and pain.
Spinothalamic Pathway
Location of synapse of the Medial Lemniscal Pathway and Spinothalamic Pathway in the journey upwards.
Ventrolateral Nucleus in the Thalamus
Somatosensory Receiving Area in the Parietal Lobe
Secondary Somatosensory Cortex
Organizational map on the somatosensory cortex - organizaed into maps that correspond to location on the body.
The ability to detect details on the skin.
Tactile Acuity
The minimum separation between two points on the skin that when stimulated is perceived as two points.
Two-point Threshold
Presenting a grooved stimulus and asking the person to indicate the orientation of the grating.
Grating Acuity
The area on the skin that, when stimulated, influences the firing rate of the neuron.
Receptive field
Spacial Cues
determined by the size, shape, and distribution of surface elements, such as bumps and grooves (perceiving coarse texture)
Temporal Cues
determined by the rate of vibrations that occur as we move our skin across a fine texture.
Passive Touch
someone or something touching you
active touch
experienced when the person controls the touch stimulation
Haptic Perception
3D objects explored with hands
an unpleasant sensory and emotional experience associated with actual or potential tissue damage, or described in terms of damage.
Multimodal Nature of Pain
physical and emotional
Nociceptive Pain
serves as a warning of impending damage to the skin.
are of the cortex deep between the parietal and temporal regions and the anterior cingulate cortex.
Pain Matrix
brain regions associated with pain perception
Inflammatory Pain
caused by damage to tissues and inflammations to joints or by tumor cells.
Neuropathic Pain
caused by lesions or other damage to the nervous system, spinal cord injury, and brain damage due to stroke.
Stimulation-Produced Analgesia
Process by which the brain can reduce the perception of pain.
Used to reduce pain and induce feelings of euphoria.
antagonist - inhibits the effect of pain relievers - binds to the receptor sites usually occupied by heroin.
Pain-reducing neurotransmitter