A Course in Experimental Psychology Volume N . 2

A Course in Experimental Psychology Volume N . 2

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1898 edition. Excerpt: ... explanations offered for the phenomenon do not seem entirely satisfactory, but the essential factor is probably defective perception of the actual movements of the eyes. b. Lagging of the Eye when the Head is Turned. Fixate a flame or other bright object for a single second or less; then close the eyes, and quickly turn the head 30 or 40 to the right or left, or up or down. The after-image (often positive) will appear in the original direction of the object. Repeat the fixation, continuing it this time for twenty seconds. The after-image (negative) will appear to turn with the head. Intermediate positions also will sometimes be noticed. Mlinsterberg and Campbell report that many persons are unsuccessful in getting this result. On a, Mach, A; Lipps, A. On b, Miinsterberg and Campbell. 180. Locations in the Indirect Field of Regard. a. Use the campimeter, adjusting the head-rest about 20 cm. from the vertical plane. Make a distinct fixation mark before the eye, and another at a distance of 15 to 18 cm. to the right or left. Let the subject bring both his hands into symmetrical positions near the median plane--e.g., on either side of the foot of the head-rest--and close his eyes. At command, let him open his eyes, take a careful observation of the distance of the side fixation mark from the median one, close his eyes again, and try to touch the side mark by a rather quick movement of the hand upon the same side. Note the extent and direction of the error, and repeat the experiment, being careful always that the subject does not shift his head, and that he keeps his eyes closed, except when judging the separation of the marks; this last, in order that he may remain in ignorance of the extent of his error. Try several times on either side. The...
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Product details

  • Paperback | 118 pages
  • 189 x 246 x 6mm | 227g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236497090
  • 9781236497093