PSYC 230 UIUC EXAM 1 (ACTUAL 2025/2026) QUESTIONS
WITH 100% VERIFIED CORRECT SOLUTIONS
Perception the process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events
Are there really 5 senses?No, there are from 7-12 different senses
neural transduction receptors, transduction and neural response
Sensation activation of sensory receptors due to a stimulus in the environment (physical stimulus---->neural signal)
Miss Signal Present Signal not detected
False Alarm Signal not present 1 / 3
Signal detected
Correct Rejection signal not present, signal not detected
receiver operating Characteristic (ROC) In a signal detection experiment, a curve representing the quality of a participant's performance
Changes in criterion shift to left=value is smaller and the observer will respond that the signal is present more of the time (more false alarms) shift to the right=value is larger and the observer will be less likely to respond that the signal was present
Differences in sensitivity (d prime) difference between the means of the Signal Present and Signal Absent distributions
Mechanoreceptors Sensory receptors responsible for sensing distortion in body tissues
SAI mechanoreceptors (slow) 2 / 3
detection of patterns, texture perception -rufini
SAII mechanoreceptors (slow) detect stretching of the skin; are fingers shaped properly?-merkel
FAI mechanoreceptors (fast) respond to low frequency vibrations ---> adjust grip -meissner
FAII mechanoreceptors (fast) when objects make contact with our skin -pacinian
Thermoreceptors detect changes in temperature (cold and warm fibers)
kinesthetic receptors Mechanoreceptors in muscles, tendons, and joints Play an important role in sense of where limbs are, what kinds of movements are made
- / 3