PSY 100 EXAM 2- UMAINE- DUFOUR UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Question:
1. define: sensation
Answer:
when special receptors in the sense organs are activated, allowing outside stimuli to become signals in the
brain
Question:
2. define: perception
Answer:
when the brain perceives the info
Question:
3. what are the chemicals that need to be converted for you to comprehend the message?
Answer:
electromagnetic to electrochemical
Question:
4. what is the process of converting out side stimuli, such as light, into neural activity?
Answer:
transduction
Question:
5. instead of receiving neurotransmitters from other cells, sensory receptors are?
Answer:
stimulated by different kinds of energy (light, vibrations, pressure)
Question:
6. Who came up with the just noticeable differences?
Answer:
Ernst Weber (Weber's law)
Question:
7. what is the just noticeable difference/ difference threshold?
Answer:
the smallest amount of change for sensory system to notice (turning up volume, difference between two
stimuli)
Question:
8. what is the absolute threshold?
Answer:
lowest amount of stimulation a person can consciously detect 50% the time the stimulation is present
(someone talking to you from farther and farther away)
, Question:
9. what is the accommodation/acclimation?
Answer:
when you adjust to an environment or state of being, you stop noticing (wearing socks)
Question:
10. What does Webers Law state?
Answer:
whatever the difference might be, it is always constant
Question:
11. who expanded on webers law and coined the term absolute threshold?
Answer:
Gustav Fechner
Question:
12. what is habituation?
Answer:
when the brain that prevents conscious attention to stimuli that do not change (don't hear the AC until it's
turned off)
Question:
13. how does the sensory adaptation differ from habituation?
Answer:
the receptor cells themselves become less responsive to an unchanging stimuli and the receptors no longer
send signals to the brain
Question:
14. what are the eyes constantly doing?
Answer:
moving around (saccadic movements)
Question:
15. albert einstein purposed light is actually tiny wave packets called?
Answer:
photons
Question:
16. What about light stimulates our senses?
Answer:
brightness, color, saturation
Question:
17. How is brightness deteremined?
Answer:
the amplitude of the wave (how low(dull) or how high(bright) the wave is)
QUESTIONS AND CORRECT ANSWERS
Question:
1. define: sensation
Answer:
when special receptors in the sense organs are activated, allowing outside stimuli to become signals in the
brain
Question:
2. define: perception
Answer:
when the brain perceives the info
Question:
3. what are the chemicals that need to be converted for you to comprehend the message?
Answer:
electromagnetic to electrochemical
Question:
4. what is the process of converting out side stimuli, such as light, into neural activity?
Answer:
transduction
Question:
5. instead of receiving neurotransmitters from other cells, sensory receptors are?
Answer:
stimulated by different kinds of energy (light, vibrations, pressure)
Question:
6. Who came up with the just noticeable differences?
Answer:
Ernst Weber (Weber's law)
Question:
7. what is the just noticeable difference/ difference threshold?
Answer:
the smallest amount of change for sensory system to notice (turning up volume, difference between two
stimuli)
Question:
8. what is the absolute threshold?
Answer:
lowest amount of stimulation a person can consciously detect 50% the time the stimulation is present
(someone talking to you from farther and farther away)
, Question:
9. what is the accommodation/acclimation?
Answer:
when you adjust to an environment or state of being, you stop noticing (wearing socks)
Question:
10. What does Webers Law state?
Answer:
whatever the difference might be, it is always constant
Question:
11. who expanded on webers law and coined the term absolute threshold?
Answer:
Gustav Fechner
Question:
12. what is habituation?
Answer:
when the brain that prevents conscious attention to stimuli that do not change (don't hear the AC until it's
turned off)
Question:
13. how does the sensory adaptation differ from habituation?
Answer:
the receptor cells themselves become less responsive to an unchanging stimuli and the receptors no longer
send signals to the brain
Question:
14. what are the eyes constantly doing?
Answer:
moving around (saccadic movements)
Question:
15. albert einstein purposed light is actually tiny wave packets called?
Answer:
photons
Question:
16. What about light stimulates our senses?
Answer:
brightness, color, saturation
Question:
17. How is brightness deteremined?
Answer:
the amplitude of the wave (how low(dull) or how high(bright) the wave is)
