Colour-Blindness and Colour-Perception

Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: CHAPTER III, THE THEORY OF PSYCHO-PHYSICAL PERCEPTION. The theory of psycho-physical perception was the necessary sequence of certain views which I have taken of the nervous system. These views differ very considerably from the ordinarily accepted theories, and, as far as I am aware, are entirely my own....
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Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: CHAPTER III, THE THEORY OF PSYCHO-PHYSICAL PERCEPTION. The theory of psycho-physical perception was the necessary sequence of certain views which I have taken of the nervous system. These views differ very considerably from the ordinarily accepted theories, and, as far as I am aware, are entirely my own. Most psychologists agree in assuming that the mind is made up of a number of faculties. The phrenologists deserve the credit of having classified these faculties and their classification is a fairly good one. I may say that with phrenology, as expounded by the phrenologists, I totally disagree. The name applied to these faculties is of secondary importance. When we see that one man is able to perform the most abstruse calculations, whilst another man is hardly able to master the multiplication table, it is evident that there is a difference between the two, which may be admirably expressed by saying that the faculty of calculation is large in the first man and small in the second. We have very little evidence to show where the faculties are situated, whether they are spread over a considerable portion of the brain, or whether they are confined to certain convolutions. I am inclined to hold the latter opinion. The following are the conclusions which I have come to with regard to the perception of sensations: ? 1. That in the cerebrum there are definite centres having the function of conveying to the mind information respecting impressions which have been conveyed from the external senses. 2. That the seat of memory is situated at a lower portion of the brain than the perceptive centre?that is, at a point between the perceptive centre and sense organ, probably in the optic thalami. 3. That all portions of an impression of sight are connected in the seat of mem..