. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 18' 12'. FIGURE 4. Three concentration-dependent response parameters (maximum impulse fre- quency, total impulses, and response duration) of two receptors stimulated with taurine (T), /3-alanine (A), hypotaurine (H) and 7-amino-n-butyric (G). in the RSC values obtained with individual compounds on different receptors. For example, /3-alanine was usually the second more stimulatory compound, yet its RSC values ranged from 5 to 94 (Table I). To explore the basis of this variability, a detailed evaluation was made of three resp
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 18' 12'. FIGURE 4. Three concentration-dependent response parameters (maximum impulse fre- quency, total impulses, and response duration) of two receptors stimulated with taurine (T), /3-alanine (A), hypotaurine (H) and 7-amino-n-butyric (G). in the RSC values obtained with individual compounds on different receptors. For example, /3-alanine was usually the second more stimulatory compound, yet its RSC values ranged from 5 to 94 (Table I). To explore the basis of this variability, a detailed evaluation was made of three response parameters of two receptors tested with graded concentrations of the four most stimulatory compounds (Fig. 4). In both receptors, the concentration functions of the three parame- ters described a series of roughly parallel curves. Also in both receptors, maximum impulse frequency reached a maximum value and did not increase at higher con- centrations. In the slower adapting receptor (Fig. 4A), impulses/response and response duration continued to increase with concentration; while in the more rapidly adapting receptor (Fig. 4B), these parameters reached maximum values at approximately the same concentration as frequency. This variation between the slow and fast adapting receptors likely results from the mode of stimulus introduc- tion which was a pulse with an exponential dilution profile (see Fig. 1). Hence, as concentration increased, the period during which the pulse remained at a supra- threshold concentration also increased, thereby prolonging the response of the slow-adapting 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; Moo
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
