Unit 5: Senation & Perception Day 7: Olfaction, Touch, Taste • Essential Question – How do we use our senses to perceive the world around us? • Objectives (write this down!): – I can: describe the functioning of each major sense • DAILY COMMENTARY (in a spiral notebook!): – If you had to give up one sense, what would it be and why? – If you had to go the rest of your life with only one sense, what would it be and why? Unit 5: Senation & Perception Day 7: Olfaction, Touch, Taste • Today: – DC – Notes – Discovering Psycholgy Video – Work Time • SUBMIT: – RJ 5.5, 5.6, 5.7; and any late work • Over the Break: – Finish Sensation Book – Sensation/Perception vocab cards – RJ 5.8 Skin Senses Only pressure has identifiable receptors. All other skin sensations are variations of pressure, warmth, cold and pain. Pressure Burning hot Vibration Vibration Cold, warmth and pain 3 Pain Pain tells the body that something has gone wrong. Usually pain results from damage to the skin and other tissues. A rare disease exists in which the afflicted person feels no pain. AP Photo/ Stephen Morton Ashley Blocker (right) feels neither pain nor extreme hot or cold. 4 Gate-Control Theory Melzak and Wall (1965, 1983) proposed that our spinal cord contains neurological “gates” that either block pain or allow it to be sensed. Gary Comer/ PhototakeUSA.com 5 Pain Control Pain can be controlled by a number of therapies including, drugs, surgery, acupuncture, exercise, hypnosis, and even thought distraction. Todd Richards and Aric Vills, U.W. ©Hunter Hoffman, www.vrpain.com 6 Taste Traditionally, taste sensations consisted of sweet, salty, sour, and bitter tastes. Recently, receptors for a fifth taste have been discovered called “Umami”. Sweet Sour Salty Bitter Umami (Fresh Chicken) 7 Smell Like taste, smell is a chemical sense. Odorants enter the nasal cavity to stimulate 5 million receptors to sense smell. Unlike taste, there are many different forms of smell. 8 Smell and Memories – Olfactory Memory The brain region for smell (in red) is closely connected with the brain regions involved with memory (limbic system). That is why strong memories are made through the sense of smell. 9 Sensory Interaction When one sense affects another sense, sensory interaction takes place. So, the taste of strawberry interacts with its smell and its texture on the tongue to produce flavor. 10 Age, Gender, and Smell Ability to identify smell peaks during early adulthood, but steadily declines after that. Women are better at detecting odors than men. 11 Body Position and Movement The sense of our body parts’ position and movement is called kinesthesis. The vestibular sense monitors the head (and body’s) position. Bob Daemmrich/ The Image Works http://www.heyokamagazine.com Whirling Dervishes Wire Walk 12 Discovering Psychology Video • • • • Take notes 3 things you learn from the video 2 questions you have 1 thing that surprised you Develop a Free Response Question • Work with a partner – Must use 6-8 terms from this unit – Must include instructions for the FRQ – Must include a grading rubric that explains what information must be included in order for students to score the point for each term • Google: “AP Psychology free response questions” to get a model of what the rubric should look like Exit Pass (in DC notebook) • What is olfactory memory and why does it happen?