Touch
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Transcript of Touch
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Touch
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Brought to You By:Max Jonathan Amaad EliseLaura
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Structure of Skin Senses
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Skin SensesContains nerve endingsCan feel: warmth, touch, pain, and pleasureMore dense (sensitive) in the tongue, face and handsTouch can stimulate sexual arousal
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Phantom Limb- Contrary to the typical, archaic, misinformed belief of the general public, the sensations of pain and pleasure are developed and processed within the general vicinity of the Somato-sensory cortex, not the confines of the exterior ligaments
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Phantom Limb continuedHenceforth, an extraordinary (du du dududu) phenomena deemed the title Phantom Limb may occur in which a person who has faced the tribulation of amputation will perceive an impossible sensation of external experience.
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Energy TransductionTransfer of information from one place to anotherSensory neurons transfer messages through pathways to the brain
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Gate-Control TheoryTransports with slow and fast fibersSensation can be blocked by Spinal GatePain can be relieved by other stimulusPain not noticed in heat of the moment
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Dealing With PainPain is essential to survivalPain relief can be achieved with drugsPlacebos are consistently effectiveEndorphins are released to help with pain
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Pain TolerancePain threshold varies from person to personElectric shocks range from 8 times voltage to inflict painHigh sensitivity to pain correlates with activation in the thalamus
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SensesTactile Sense: input from the skin receptors about touch, pressure, temperature, pain, and movement of the hairs on the skin. Kinesthetic sense: provides the brain with information on the relative positions of the parts of the body. Vestibular Sense: input from the inner ear about equilibrium, gravitational changes, movement experiences, and position in space. Cutaneous senses - the faculty by which external objects or forces are perceived through contact with the body
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Vestibular SensesSense of balanceControlled by copula in the ear canalRotation and oscillation of fluid in inner ear alters balance
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Cutaneous SensesPerception of external object through touchProvides perception of weight and texture
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Kinesthetic SenseSense of spatial awarenessFeeling of where you areWhy people are capable of identifying parts of body without eyes open
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Common Sensory DisordersSensory integration disorder/dysfunctionCan lead to problems in relationships, self-esteem, emotions, learning, daily functions.Hypersensitivity to touch (common in children):Fear pf even light or unexpected touchFrightened by something
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Hypersensitivity To Touch (Tactile Defensiveness) Upset by even light touch.Wind, raindrops, brushing teeth.Avoids certain textures, materials, foods, temperatures.
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Hyposensitivity To Touch (Under-Responsive): Not bothered by injuries, like cuts and bruises, and shows no distress with shotsLikes surfaces and textures that provide strong tactile stimulation. Has a preference and craving for excessively spicy, sweet, sour, or salty foods.
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Key PointsSensation in brain not skin. Different people have different pain thresholds Information transfer can be blocked by other messagesPain is actually useful
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Vocabulary WordsInner ear: essential part of the vertebrae organ of hearing and equilibrium that typically is located in the temporal bone.
Semicircular canals: any of the three curved tubular canals in the labyrinth of the ear, associated with the sense of equilibrium.
Utricle: the larger of 2 divisions of the membranous labyrinth of the internal ear. Sematosensory (sensory) cortex: any part of the brain that receives messages from a sense organ.
Kinesthetic sense: awareness of movement or activity in muscles or joints.
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Vocabulary ContinuedPhantom limb sensation: perception of sensations, usually including pain, in an arm or a leg after limb has been amputated.
Cutaneous sense: external object or forces are perceived through contact with body.
Pain: physical suffering or distress, as due to injury, illness, etc.
Control theory: behavior is inspired by what a person wants most at any given time. (William Glasser)Cutaneous receptors: a specialized cell or group of nerve endings that respond to a sensory stimulus.
Gate control theory: an explanation for pain control that proposes we have a neural gate that can in some circumstances, block incoming pain signals.
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Vocabulary ContinuedMechanoreceptors: primary neurons that respond to mechanical stimuli by firing action potentials.Thermoreceptors: nerve ending sensitive to stimulation by heat Nocioreceptors: respond to extreme harmful stimuli by producing the sensation of painAcupuncture: procedure of inserting and manipulating needles into various parts of the body to relieve pain.Lamaze method: breathing and relaxing techniques used during childbirth.
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BibliographyWelcome to the Sensory Processing Disorder Resource Center (2010, February). In Sensory Processing Disorder. Retrieved November 10, 2010, from http://www.sensory-processing-disorder.com/Sense of Touch (2010). In Home Science Tools. Retrieved November 10, 2010, from http://www.hometrainingtools.com/skin-touch/a/1388/ Your Sense of Touch (2010). In The Senses. Retrieved November 10, 2010, from http://library.thinkquest.org/3750/touch/touch.html