A Plethysmographic Study of Attention (Paperback)

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. 1905 Excerpt: ...of the fall vary with the O. 2. Stimulus: von Frey's Pressure Hair. The hair was adjusted to give liminal pressures. Exp. 99. Baird. I---42" 1'--16" R 3.25 3.00 3.10 2.90 2.05 2.50 P 13.7 13.4 12.4 12.3 11.2 11.3 3.06 2.27 12.9 11.2 l---64' 2.50 2.55 2.75 2.55 2.60 2.53 12.3 11.5 11.5 11.7 11.1 11.6 2.47 11.6 During reaction: R is greatly inhibited throughout, but more at the end of the reaction. V is unchanged during the first half of the reaction; it rises sharply during the second half. Exp. 100. Ghi, oway. 1"--42" 1"--15' R 3-75 3-4o 3.80 3.33 2.10 3.10 P 15.8 16.3 16.0 16.0 13.6 13.8 3.57 2.60 16.0 13.7 1 "--66" 3-50 3-5o 3-40 3-25 3-55 3-7o 3-75 13-3 14-7 15-1 i5-2 15-2 150 3-52 During reaction: R is decidedly inhibited. Vfalls markedly. Exp. Ioi. Sabine. 1 "--61" 1 "--12" R 3.40 2.70 2.80 2.75 3.25 3.40 3.54 P 14.0 13.6 13.9 13.4 13.4 14.3 14.0 3-05 3-54 13-7 140 1"--50" 4-00 3.55 3.45 3.70 3.25 15.0 14.8 13.6 13.6 13.6 3.60 14.1 During reaction: R is inhibited. V falls. Exp. 102. Miss Jenkins. 1 "--44.5' 1"--13-5" R 4.25 4.25 4.25 4.50 4.44 4.00 P 13.2 12.9 12.7 12.6 13.7 11.5 4.34 4.00 13.0 11.3 i'_65' 4.19 4.00 3.50 3.75 3.50 4.00 12.0 13.1 12.6 11.5 11.9 12.0 3.82 12.2 During reaction: R is moderately inhibited. V falls slightly. Summary of Results. Attention to minimal pressure is characterized by: i. Unequivocally slower R (2 out of 4 cases). Unequivocally faster R in no case. In 1 case R is less than normal, but more than recovery. In 1 case R is more than normal, but less than recovery. ii. Unequivocally slower P (3 out of 4 cases). In 1 case P is faster than normal, and slightly less than recovery. iii. Inhibited breathing in every case; in 2 cases more ...