PSYC 107 1nd Edition Lecture 17 Outline of Last LectureI. Vision- Feature Detection- Shape DetectionII. ColorIII. HearingOutline of Current LectureI. TouchII. Smell and TasteIII. Sensory InteractionIV. Balance and MotionV. Form PerceptionVI. Depth PerceptionCurrent LectureI. Toucha. Touch is a mix of distinct skin senses:i. Pressure *** only one to have identifiable receptorsii. Warmthiii. Coldiv. Painb. Purpose of pain: allows the body to know when something has gone wrongc. Pain messages are interpreted by both the sensory cortex and the areas of the brain associated with emotions and memoryi. Biopsychological Influences1. Biological: differences in pain thresholdsii. Psychological1. DistractionThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.2. Expectationsiii. Sociald. Pain Theoriesi. Gate-Control Theory: small nerve fibers transmit pain while large nerve fibers transfer other information; closing the gate way is done by stimulating large fibers to block the smallII. Smell and Tastea. Odors are airborne chemicals that interact with receptors in our nasal passagesb. Humans can identify 10,000 different odorsc. We can detect 5 tastes; sweet, sour, salty, bitter, savory, and fati. Papillae on the tongue contain taste buds that contain sense receptorsii. Tongue map: different parts of the brain are responsible for different tastes is a mythiii. The brain region for small is closely related to the memory section which is why many memories are associated with smell.iv. Taste: gustationv. Smell: olfactionvi. The distinguishing between pleasant and disgusting smells is done by the limbic systemvii. Tasting disgusting food and viewing facial expressions activate the cortexviii. Pheromones are the odorless chemicals that serve as a social signal to others of the same speciesIII. Sensory Interactiona. Taste and smell and texture all combine to get flavorb. Vision and touch in the rubber hand illusioni. A participant has their hand placed somewhere safe and a rubber hand is placed in the view of the participant.ii. The administrator strokes both hands and the same time, then hits the rubber hand with a hammeriii. The participant believes their hand was hitIV. Balance and Motiona. The sense of our body parts’ position and movement is called kinesthesis. b. The vestibular sense monitors head and body position.c. Proprioceptors:i. Muscle strength receptorsii. Tendon force receptorsiii. Information travels to somatosensory and motor corticesd. Semicircular canalsi. Fluid-filled canals are responsible for our sense of balanceii. Otholihs- is the tiny crystal sense linear movement and gravityiii. Information travels to the brain stem and cerebellumV. Form Perceptiona. Organization of the visual field in to figures that stand out from the groundVI. Depth Perceptiona. All species can see a sharp drop from the time they are bornb. Humans can see this at about 6 monthsc. Depth perception is
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