Chapter 4 in Gen Psy
CHAPTER 4 – SENSATION AND PERCEPTION
I. SENSORY AWARENESS * Sensation is the awareness or a mental process which is aroused due to the stimulation of the senses. * The activation of a sense organ using physical energy that processes the receiving of stimulus from the external environment. A. Stimulus – anything that arouses a sense organ to activity. B. Receptor organs – a highly specialized part of the body selectively sensitive to a definite stimulus. C. Sensory receptors – are highly specialized cells that detect and transmit information to sensory nerves and brain.
C.1. Photoreception * Detection of light, perceived as light.
C.2. Mechanoreception * Detection of pressure, vibration, and movement perceived as touch, hearing and equilibrium.
C.3. Chemoreception * Detection of chemical detected as smell and taste. D. The receptors in the human body are the five sense organs. E. Distal senses – the eyes and the ears, are sensitive to external stimuli from a distance in the outside environment.
Terms to remember: 1. Psychophysics * The study of relationship between the physical aspects of stimuli and our psychological experience of them. 2. Transduction * It refers to the process in which a sense organ changes, or transforms, physical energy into electrical signals that become neural impulses. 3. Adaptation * It refers to the decreasing response of the sense organ the more they are exposed to a continuous level of stimulation.
I.A. Physical Stage 1. Refers to the action of some physical stimulus on a sense organ. 2. For each type of sensation, there is an adequate and appropriate stimulus that is one which is naturally present to activate a particular receptor.
I.B. Physiological Stage
1. Refers to the physiological process that has started the action of a stimulus on a receptor. It consists in the flow of nervous impulses from the receptor to some terminal points in the
I. SENSORY AWARENESS * Sensation is the awareness or a mental process which is aroused due to the stimulation of the senses. * The activation of a sense organ using physical energy that processes the receiving of stimulus from the external environment. A. Stimulus – anything that arouses a sense organ to activity. B. Receptor organs – a highly specialized part of the body selectively sensitive to a definite stimulus. C. Sensory receptors – are highly specialized cells that detect and transmit information to sensory nerves and brain.
C.1. Photoreception * Detection of light, perceived as light.
C.2. Mechanoreception * Detection of pressure, vibration, and movement perceived as touch, hearing and equilibrium.
C.3. Chemoreception * Detection of chemical detected as smell and taste. D. The receptors in the human body are the five sense organs. E. Distal senses – the eyes and the ears, are sensitive to external stimuli from a distance in the outside environment.
Terms to remember: 1. Psychophysics * The study of relationship between the physical aspects of stimuli and our psychological experience of them. 2. Transduction * It refers to the process in which a sense organ changes, or transforms, physical energy into electrical signals that become neural impulses. 3. Adaptation * It refers to the decreasing response of the sense organ the more they are exposed to a continuous level of stimulation.
I.A. Physical Stage 1. Refers to the action of some physical stimulus on a sense organ. 2. For each type of sensation, there is an adequate and appropriate stimulus that is one which is naturally present to activate a particular receptor.
I.B. Physiological Stage
1. Refers to the physiological process that has started the action of a stimulus on a receptor. It consists in the flow of nervous impulses from the receptor to some terminal points in the