To explain the fact that some neuropsychological studies show close parallels between perceptual deficits anddeficits in imagery, while other studies do not find this parallel, it has been proposed that the mechanism for imageryis located at visual centers and the mechanism for perception is located at visual centers. a.lower; higherb. higher; lowerc. both lower and higher; higherd. higher; both lower and higher

Higher, both lower and higher  

Explanation:

Neuro-psychology is the part of clinical psychology that deals with the cognitive functioning of the brain. Mental imagery is the term that is related to the daydreaming, imagination related to a written narrative, To imagine themselves in a role model of any famous personality, poetry is a good example of the imagination. Perception and the mental imagination both are the same phenomena but there is a difference between both the concepts as we can define that imagination occur without the presence of stimuli and perception occurs when some stimulus is present.

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer