You think it is possible to have sensation without perception? Is it possible to have Perception without sensation?
Sensation is the activation of the sense organs by a source of physical energy.
Perception is the sorting of , interpretation,analysis and integration of stimuli carried out by the sense organs and brain.
It is possible to have a perception without sensation,adaptation is the reason behind that.
For example, people feel their amputated body parts for a short period of time.
However, without perception sensation is not possible. Because, brain can not identify the sensation without perception.
If the eye had a second lens that "unreversed" the image hitting the retina ,do you think there would be changes in the way people perceive the world ?
Yes, people will see everything rotated 180 degrees from the normal way. It could also affects our vision, people will see things big or small depends upon the position of the second lens.
Much research is being conducted for repairing faulty sensory organs through devices such as personal guidance systems and eyeglasses, among others, do you think that researchers should attempt to improve normal sensory capabilities beyond their natural range.For example, make human visual or audio up abilities more sensitive than normal)? What benefit might this ability bring? What problems might it cause?
It will be a good attempt if researchers try to improve normal sensory capabilities beyond their natural range. Which will help to improve people with short range of sensory capabilities.
Moreover,it will help people with vision,hearing and all other sensory problems. However, many people will misuse that. For example, athletes could misuse,shooters could cheat by increasing their visual range. Moreover, when people try to become extra ordinary problems will arises.
Burglars could misuse that for burglary too.
In what ways do painters represent three-dimensional scenes in two dimensions on a canvas ? Do you think artists in non western cultures use the same or different principles to represent three dimensionality? Why?
Artists cheat depth perceptions ,binocular disparity, and relative size to represent two dimensional scenes in two dimensional canvas. By cheating our natural abilities in depth perception, binocular disparity,and relative size, artist create a visual illusion.(physical stimuli that consistently produce errors in perception.)
Depth perception - The ability to view the world In three dimensions and to perceive distance.
Binocular disparity - the difference in the images seen by the left eye and the right eye.
Visuals illusions - physical stimuli that consistently errors in perception.
Relative size -if two objects are the same size, the one that makes that a smaller image on the retina is farther away than is the one that provides a larger image.Non-Western cultures use

different principles to represent three dimensionality. Cultural difference has a great influence in people's depth of perception.

CASE STUDY ANSWERS.
1) Captan muller and his co-pilot sat in the dark cockpit to get their eyes adjusted to the night view.
2)The rods are thin cylindrical receptor cells and that are highly sensitive to lights. Rod cells became more sensitive to light when Miller sat in the cock- pit. Improved Absolute threshold is the reason why Muller seen that first.
3) The pilot recognize that the object was moving because the light was growing brighter.it stood against the darkness of the sky. It was difficult to understand whether it was moving because the aircraft was also moving. 4) Experience changed Mullers vision capabilities.His absolute threshold increased over time .
5) semicircular canals of the inner ear is responsible for that sensation.semicircular canals has three tubules containing fluid that sloshes throw them when the head move. When the aircraft went upwards their semicircular canals sense the change in gravitational pull, and all other tiny movements. Which help the passengers to understand the change.