Prohibition
Chapter 5 Outline
•Sensation is the detection of physical energy from the environment which weencode as neural signals.
•When we organize and interpret our sensations, it is known as perception
•The beginning level of sensory analysis is also known as bottom- up processing
•Top-down processing is the information processing guided by higher-level mental processes, as when someone constructs perceptions drawing on our experienceand expectations.
•Bottom up processing is sensory analysis that begins at the entry level, withinformation flowing from the sensory analysis that begins at the entry level withinformation flowing from the sensory receptors to the brain
•Patient E.H. suffered from propopagnosia, which is the inability to recognize andconnect the outside the world. Complete sensation was present but perception wasincomplete. It is the lack of top-down processing
Thresholds
•Psychophysics is the study of relationships between the physical characteristics of stimuli, such as their intensity, and our psychological experience of them.
•Absolute threshold is the minimum stimulation needed to detect a particular stimulus50 percent of the time
•A hearing specialist would expose an individual to varying sounds in order to figureout their absolute threshold
•Signal detection theory is the theory which predicts how and when we detect the presence of a faint stimulus amidst background stimulation. Assuming that there is nosingle absolute threshold and the detection depends partly on a person’s experience,expectations, motivation and level of fatigue.
•A person’s heightened attention decreases after 30 minutes.
•More false alarms are detected in heightened responsiveness
•A stimulus is Subliminal if it is below your absolute threshold, you detect it lessthan 50% of the time. For instance, a microscopic cell is subliminal to you becauseyou cannot see it with your naked eye.
•Subliminal advertisements (Drink Coke, eat popcorn etc.), does have an affect on
•Sensation is the detection of physical energy from the environment which weencode as neural signals.
•When we organize and interpret our sensations, it is known as perception
•The beginning level of sensory analysis is also known as bottom- up processing
•Top-down processing is the information processing guided by higher-level mental processes, as when someone constructs perceptions drawing on our experienceand expectations.
•Bottom up processing is sensory analysis that begins at the entry level, withinformation flowing from the sensory analysis that begins at the entry level withinformation flowing from the sensory receptors to the brain
•Patient E.H. suffered from propopagnosia, which is the inability to recognize andconnect the outside the world. Complete sensation was present but perception wasincomplete. It is the lack of top-down processing
Thresholds
•Psychophysics is the study of relationships between the physical characteristics of stimuli, such as their intensity, and our psychological experience of them.
•Absolute threshold is the minimum stimulation needed to detect a particular stimulus50 percent of the time
•A hearing specialist would expose an individual to varying sounds in order to figureout their absolute threshold
•Signal detection theory is the theory which predicts how and when we detect the presence of a faint stimulus amidst background stimulation. Assuming that there is nosingle absolute threshold and the detection depends partly on a person’s experience,expectations, motivation and level of fatigue.
•A person’s heightened attention decreases after 30 minutes.
•More false alarms are detected in heightened responsiveness
•A stimulus is Subliminal if it is below your absolute threshold, you detect it lessthan 50% of the time. For instance, a microscopic cell is subliminal to you becauseyou cannot see it with your naked eye.
•Subliminal advertisements (Drink Coke, eat popcorn etc.), does have an affect on