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.

question - in 1827, john walker, a druggist in a small english town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. the druggist had discovered the first friction-chemical match, the kind we use to-day. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. although walker's match did not require the bottle of acid, nevertheless it was not a good one. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. in a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. the match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. it would ignite when rubbed on any dry surface, and there was no longer any sputtering. this was the phosphorus match, the match with which we are so familiar. according the paragraph what was the benefit of the new phosphorus match? it burst into flame when rubbed on sandpaper. it was made by mixing chemicals. it could be ignited on any dry surface. it threw fire in all directions.

answer - matches required natural chemicals

chronological thinking is an indispensable tool to structure a historical narrative and to give meaning to a sequence of events. the final section presents the results of a survey to test the chronological thinking of lower secondary school students carried out by the educational research institute.