SENSATION AND PERCEPTION * One of the basic processes in the interaction of man and his environment that governs the reception of information. * Man must be able to sense‚ interpret‚ and respond to various events and stimulations. The study of reception and function of stimulation may be divided into two parts: * Sensation – considers the mechanism of receiving information * Perception – considers the received information and past experiences. SENSATION * Sensations that can
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THE SENSES Hilgard morgan and Sartain explain that there are more than eight senses that we use to explore and learn about the world.Each of these senses has a specific sense organ within which are receptor cells or receiving mechanisms that are sensitive to certain stimuli in the environment. The Eye Is the organ of vision‚ is sometimes compared to a camera lens because it works roughly the same way as the latter which focuses images of objects at various distances o the film as it
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The Visual Pathway 1. Light must pass through the cornea‚ aqueous humor‚ lens and vitreous humor before reaching the retina. It must then pass through the inner layers of the retina to reach the photoreceptive layer of rods and cones. 2. When the photoreceptors are stimulated they transmit impulses to the bipolar cells that project to the ganglion cells of retina. 3. The axons from the ganglion cells converge at the optic disc to form optic nerve which enters the cranial cavity through the optic
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1. Sensation: the process by which sensory receptors and nervous system receive and represent stimulus energies from our environment 2. Perception: the process of organizing and interpreting sensory information‚ enabling us to recognize meaningful objects and events 3. Bottom-up Processing: analysis that begins with the sense receptors and works up to the brain’s integration of sensory information 4. Top- Down Processing: information processing guided by higher-level mental processes
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Psych 140 Sensation and Perception Web Quest Go to: http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/V/Vision.html 1.) Define and explain the following parts: a. iris- A ring of muscle tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening. Pigmented and responsible for the eye color. b. pupil- The adjustable opening in the center of the eye through which light enters. It is under the control of the
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noises‚ water noises‚ music or someone coughing. The sound then travel to the outer ear where it is the reflected into the middle ear where it is amplified into the inner ear. The sound is then transferred through the viscous fluid in the cochlea. Inside the cochlea are tubes that are filled with fluid and hair cells. The hair cells are moved by the sound waves and become receptors for the primary auditory cortex. The cortex then processes the sounds into an interpretation. (University of Phoenix‚
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What is sound? Sound is a wave‚ a pattern—simple or complex‚ depending on the sound—of changing air pressure. Sound is produced by vibrations of objects. The vibrations push and pull on air molecules. The pushes cause a local compression of the air (increase in pressure)‚ and the pulls cause a local rarefaction of the air (decrease in pressure). Since the air molecules are already in constant motion‚ the compressions and rarefactions starting at the original source are rapidly transmitted through
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BIOLOGY Are eyes enough to enjoy this natural splendour ...? Didn’t you notice the picture drawn by Raju and its caption? What is your opinion about the caption? You too might have got the opportunity to enjoy such scenes from nature. What have your blissful experiences in such situations been? — — — — — Colourful scenes The chirping of birds The gentle pat of the breeze The intoxicating fragrance of flowers The honey-sweetness of mango 7 BIOLOGY Though these are different experiences
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Intro to Life Science II The Human Ear and Its Interactions While most people hear sound and interact through using sound‚ most do not stop to really try to understand what is actually happening. This tends to be on an overall scale as well‚ not only do most not understand the mechanical processes that occur when our ears take in sound‚ but most do not understand what sound actually is‚ nor how the we interpret it. In this essay I will do my best to give a broad overview of the human ear‚
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Unit 13 Lecture Study Guide – Nervous System Part II 1. What are the 2 major divisions of the Nervous System? Central Nervous System and Peripheral Nervous System 2. What are the 2 major divisions of the central nervous system (CNS)? The brain and the spinal cord 3. What are the 2 major divisions of the peripheral nervous system (PNS)? The somatic nervous system and autonomic nervous system. 4. Differentiate between the autonomic and somatic nervous systems. The somatic
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