Thinking, Feeling, Doing: An Introduction to Mental Science |
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Page xi
... Threshold 64. Finding the Threshold for the Palm of the Hand 65. Finding the Least Noticeable Change in Pressure . 66. Simple Esthesiometer 67. The Complete Esthesiometer 68 . Aristotle's Illusion 69. A Cold - spot Map 70. A Hot - spot ...
... Threshold 64. Finding the Threshold for the Palm of the Hand 65. Finding the Least Noticeable Change in Pressure . 66. Simple Esthesiometer 67. The Complete Esthesiometer 68 . Aristotle's Illusion 69. A Cold - spot Map 70. A Hot - spot ...
Page 77
... Threshold . nothing . Then I try the next heavier , and so on , till you feel the pressure . The little disks are graded in weight , thus 1mg , 2mg , etc. , up to 10mg . Now , if the fourth weight was the first you felt , then 4mg was ...
... Threshold . nothing . Then I try the next heavier , and so on , till you feel the pressure . The little disks are graded in weight , thus 1mg , 2mg , etc. , up to 10mg . Now , if the fourth weight was the first you felt , then 4mg was ...
Page 78
... threshold is one that we shall meet everywhere in the study of mind . The threshold of sensation for the sense of pressure in an average subject was 2mg for forehead , temples , and back of forearm and hand ; 3mg for inner side of ...
... threshold is one that we shall meet everywhere in the study of mind . The threshold of sensation for the sense of pressure in an average subject was 2mg for forehead , temples , and back of forearm and hand ; 3mg for inner side of ...
Page 80
... threshold of change , in the pressure . Thus , if the weight at the start was 50 % and the amount of sand added was 358 , the least noticeable change was 35 % , or of the original pressure . Several facts will be noticed by those who ...
... threshold of change , in the pressure . Thus , if the weight at the start was 50 % and the amount of sand added was 358 , the least noticeable change was 35 % , or of the original pressure . Several facts will be noticed by those who ...
Page 81
... threshold of change in- creases inversely as the rate of change but propor- tionately as the starting pressure . The least noticeable difference is quite another mat- ter from the least noticeable change . The usual method of experiment ...
... threshold of change in- creases inversely as the rate of change but propor- tionately as the starting pressure . The least noticeable difference is quite another mat- ter from the least noticeable change . The usual method of experiment ...
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Common terms and phrases
appears Aristotle attention average beat Binocular blind-spot blue brain called Changing Rings colour blind combined crossed disparity Dichromats discrimination and choice disks distance drum dynamometer effect electric error Esthesiometer experiments fact fatigue feeling figure finger fork G. P. Putnam's Sons Geissler tubes give glass grams green grey hand hear Herbart Hermann von Helmholtz idea illusion illustrated increased indicate intensity interval irregular least noticeable change least noticeable difference left eye letters light looking measure memory ment mental method middle Moon Illusion moved movement objects observation odour olfactometer orange paper person pitch placed plethysmograph point of regard produced psychology quinine rapid reaction reaction-time record seen sensations shades shown in Fig shows smell sound spark star steadily Steadiness stereoscope Suppose Symmetry tapping taste things thought threshold tion tone touch Trichromats tube vibrations vision weight words yellow
Popular passages
Page 181 - ... probably never in all their lives received one genuine colour-sensation. The modern religionists of the school of Overbeck are just like people who eat slate-pencil and chalk, and assure everybody that they are nicer and purer than strawberries and plums.
Page 5 - I have noticed in one of my formicaria a subterranean cemetery, where I have seen some ants burying their dead by placing earth above them. One ant was evidently much affected, and tried to exhume the bodies, but the united exertions of the yellow sextons were more than sufficient to neutralise the effort of the disconsolate mourner.