. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Figure I. (A) A single frame of optic nerve imaged under 600-nm illumination. The region of the crush (demarcated with white lines) il- luminates poorlv and therefore darker than the rest of the nerve. (B) The activity mar of the .same nerve during electrical stimulation. Data sets composed of 20 frames, each with a 2-s exposure, were collected during periods chosen randomly in which the nerve was either stimulated or unslimulated. The tissue was allowed to return to baseline tor 30 s hetore the data set was collec
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Figure I. (A) A single frame of optic nerve imaged under 600-nm illumination. The region of the crush (demarcated with white lines) il- luminates poorlv and therefore darker than the rest of the nerve. (B) The activity mar of the .same nerve during electrical stimulation. Data sets composed of 20 frames, each with a 2-s exposure, were collected during periods chosen randomly in which the nerve was either stimulated or unslimulated. The tissue was allowed to return to baseline tor 30 s hetore the data set was collected. H7i«i the nerve was stimulated, the reflectance of the active regions decreased Principal components, which represent the best fit to the data, were used to generate the activity map. The strength of activity is denoted by the grey level in the image: a bright pixel denotes a decrease in reflectance. Activity appears to be limited to the region proximal to the crush. (C) The time course of elec- trically evoked intrinsic signal activity during and after 10 (solid squares) and 100 iterations (open circles) of a brief (10s) stimulation. The peak (normalized to ) occurs after the offset of stimulation, and the return h i baseline is very slow. (D) The normalized time course of visually evoked intrinsic signal activity o Z D -02- -06- -08- -1 0- -1 2- -14 Electrically-Evoked Response. STIMULATION 10 20 30 —i— 40. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
