1. Sensing the World: Some Basic Principles

2. Describe what you see in the image below? Is this an example of bottom up or top-down processing.

3. Answer: FExample of Bottom up processing. You do not use your experience to perceive an object. We use only the the features of the object itself to build a complete perception. We start our perception at the bottom with the individual characteristics and build up.

4. 1)The title of the next image is rat-man. A) Describe to me what you see in the image below. B) Explain whether your ability to tell me what you saw was an example of bottom up processing or top down processing.

5. Answer FThis would be an example of top down processing because you use your background knowledge to fill in the gaps to what you perceive

6. 3) Answer Fa.. The student would most likely overstimate the amount of times he or she saw the signal because the safety of the flight is in the securities hand. In this simulation, nothing was really at risk. This theory assumes that there is no absolute threshold, and that the ability for someone to detect a stimulus relies on experience, expectations, motivation, and fatigue

7. 4)Answer FThe difference threshold is the smallest amount of change needed in a stimulus to detect change..5 is how much you can detect change. Weber’s law states the more intense the stimulus the more you will need to change to notice a difference. It is harder to tell the difference between c and b because they are more intense. You need more change. An example would be putting hot sauce in a non spicy soup and a spicy soup. You will need to put more hot sauce on a spicy soup to tell the difference

8. 5) Answer FDiminished sensitivity as a consequence of constant simulation

9. What is the difference between top-down and bottom up processing ?

10. What is the difference between top down and bottom up processing ? Bottom up processing deals with simply using only your sense receptors and then working up to a higher level of processing. Top down processing occurs by using prior information, experience, or expectations to fill in gaps Bottom up processing deals with simply using only your sense receptors and then working up to a higher level of processing. Top down processing occurs by using prior information, experience, or expectations to fill in gaps

11. What is the difference between sensation and perception?

12. FSensation is the pickup of information by our sensory receptors, for example the eyes, ears, skin, nostrils, and tongue.. Perception is the interpretation of what is sensed.

13. What is the difference between absolute threshold and difference threshold

14. FThe minimum stimulation necessary to detect a particular stimulus is the absolute threshold. The difference threshold is the smallest amount of change needed in a stimulus to detect change

15. What does research on signal detection theory tell us?

16. FSignal Detection theorists have found out that people respond differently to the same stimuli under different circumstances. FExamples? FSignal Detection theorists have found out that people respond differently to the same stimuli under different circumstances. FExamples?

17. Are subliminal stimuli sensed? Are they perceived?

18. FYes if slightly below the absolute threshold it can be sensed at times. Yes it can be perceived. Example????

19. Briefly explain the process of sensory adaptation. How does it focus our attention on changing stimulation?

20. FSensory adaptation occurs because our body becomes less sensitive to an unchanging stimulus FAllows our body to focus less on other things around us that are changing, rather than stimulus that is constant FSensory adaptation occurs because our body becomes less sensitive to an unchanging stimulus FAllows our body to focus less on other things around us that are changing, rather than stimulus that is constant

21. Examples of Sensory Adaptation FSight FHearing FTaste FSmell FTouch FSight FHearing FTaste FSmell FTouch