PSY100H1 Chapter Notes - Chapter 4.1: Detection Theory, Absolute Threshold, Sound Energy
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PSY100H1 Full Course Notes
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Document Summary
Sensation: detecting external events by sensory organs & turning those stimuli into neural signals. Perception: organizing & interpreting stimuli that we sense: skill that brains learn through experiences. Transduction: specialized receptors transform physical energy into neural impulses. Light: light waves reach receptors in the back of the eye light-sensitive chemicals turn energy into nerve impulses travels up to brain centers where colour & motion are perceived & objects identified. Sound: cochlea (sound energy converted into neural impulses) hearing centres in the brain. Doctrine of specific nerve energies: idea that different senses are separated in the brain. Orienting response: our tendency to switch attention to new stimuli when changing environments. Sensory adaptation: reduction of activity in sensory receptors due to repeated exposure to a stimulus: adjust to our surroundings & shift our focus to other important events. Stimulus thresholds: absolute threshold: minimum amount of stimulus needed for detection at least.
