Page:Principles of Psychology (1890) v2.djvu/11



Its distinction from perception, 1. Its cognitive function—acquaintance with qualities, 3. No pure sensations after the first days of life, 7. The 'relativity of knowledge,' 9. The law of contrast, 13. The psychological and the physiological theories of it, 17. Bering's experiments, 20. The 'eccentric projection' of sensations, 31.

Our images are usually vague. 45. Vague images not necessarily general notions, 48. Individuals differ in imagination; Gallon's researches, 50. The 'visile' type, 58. The 'audile' type, 60. The 'motile' type, 61. Tactile images, 65. The neural process of imagination, 68. Its relations to that of sensation, 72.

Perception and sensation, 76. Perception is of definite and probable things, 82. Illusions, 85;—of the first type, 86;—of the second type, 95. The neural process in perception, 103. 'Apperception,' 107. Is perception an unconscious inference? 111. Hallucinations, 114. The neural process in hallucination, 122. Binet's theory, 129. 'Perception-time,' 131.

The feeling of crude extensity, 134. The perception of spatial order, 145. Space-'relations,' 148. The meaning of localization, 153. 'Local signs,' 155. The construction of 'real' space, 166. The subdivision of the original sense-spaces, 167. The sensation

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