PSY 1101 Study Guide - Midterm Guide: Auditory Cortex, Stimulus Modality, Sensory Threshold

• School: University of Ottawa
• Department: Psychology
• Course: PSY 1101
• Professor: Kenneth Campbell

Document Summary

The messages/electric signal along the special nerves are the same, but the experience is different. Objective: sensation is probably similar in all humans and possibly in animals that share our speci c receptors. Bottom-up processing: sensory processing involves the extraction of the basic features. Receptors provide at least 5 features of stimulus: modality. Audition transduce pitch, vision transduce to colour: intensity. High intensity may be experienced as pain: location. Absolute : minimum amount necessary to detect a stimulus 50% of the time. Difference/noticeable : weber"s law (delta i/i = k). Magnitude of two stimuli must differ by constant proportion (not addition) for difference to be perceived. To deal with this uncertainty : conservative strategy. Observer will only answer yes, a stimulus was presented when they are certain (stimulus was well above threshold) Threshold will appear to be very high: liberal strategy. Claim a stimulus was presented when they was uncertain.