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131.
Herbert L. Meiselman Harry E. Bose William F. Nykvist 《Attention, perception & psychophysics》1972,12(2):249-252
Magnitude productions of sodium chloride (salty), quinine hydrochloride (bitter), and sucrose (sweet) yielded steeper psychophysical functions than those obtained with magnitude estimation. Hydrochloric acid (sour) produced the opposite effect. The results are discussed with respect to previous findings in taste intensity scaling and to general psychophysical considerations. 相似文献
132.
Threshold sensitivity was measured for sinusoidal movement of bright 1-deg lines against a dark background as a function of oscillation frequency and retinal location. Sensitivity was greatest in the fovea and at a frequency of 1–2 Hz. Peripheral sensitivity was more narrowly tuned than foveal sensitivity. The presence of a stationary reference line affected mainly the foveal sensitivity. The results are interpreted as evidence for both position- and velocity-sensitive mechanisms in the movement detection system. 相似文献
133.
William Hodos James C. Bonbright Jr. 《Journal of the experimental analysis of behavior》1972,18(3):471-479
Pigeons were trained in a conditional discrimination procedure to discriminate between visual stimuli that varied in intensity. The magnitude of the intensity difference ranged from 0.80 to 0.05 logarithmic units. Psychometric functions were calculated from the data and the mean difference threshold for the 11 subjects was approximately 0.12 logarithmic units. A signal-detection analysis of the data suggested that stimuli that were below the calculated threshold were detectible to the subjects. 相似文献
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136.
A circuit to permit an electronic drinkometer to operate during footshock is described. The circuit employs a diode matrix that allows all grid bars to be connected at one point to form one electrode of the drinkometer; it is isolated at another point so as not to shortcircuit the impressed footshock. 相似文献
137.
William R. Uttal 《Behavior research methods》1972,4(2):55-60
This, then, is a very personal and informal view of some of the peculiar trends of computer application in experimental psychology. If there is any single point on which I would prefer to end, it would be a reiteration of my belief that, on the whole, the positive attributes and contributions to our science of on-line computers have far outweighed some of these nagging aggravations. Regardless of what has been done and in what way it has been done, it is certainly better to have done something than never to have done anything at all. Our science, like a computer program, is also contingent and self-adapting, and most minor strategic errors are quickly corrected. But no one can debug a computer program or a major technological movement without at least having pushed the startbutton. 相似文献
138.
Modifications of the Hewlett-Packard version of the BASIC language to permit its use in data acquisition and control of on-line experiments are described. The resulting software system is an easy-to-use interpretative compiler. 相似文献
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140.
William R. Uttal Lynne M. Bunnell Stuart Corwin 《Attention, perception & psychophysics》1970,8(6):385-388
We report the results of a study that investigated the effects of four experimental parameters on the tachistoscopic detectability of dotted lines in a noisy background consisting of dynamic patterns of identical dots. Characteristics of the lines that were explored included dot spacing, dot numerosity, and line orientation. Dot spacing was shown to be the most powerful parameter in determining the masking effect: the closer the dots, the more easily the line was detected. Increasing the number of the dots was also effective in increasing the detectability of a line, but only up to a limit of five dots. The orientation of the line, on the other hand, did not alter its detectability. Increasing the density of the visual masking noise monotonically reduced the detectability of the line. These studies are an extension of French’s (1953, 1954) work, differing mainly in the fact that the stimulus material was presented tachistoscopically rather than in a mode that allowed prolonged (up to 5 sec) examination of the figures. Thus, they put the results in a domain in which physiological interpretations may be more critically evaluated. A comparison of the results suggests that essentially the same sorts of cognitive mechanisms are operating in the millisecond domain as in the longer exposures. This suggests that simple neurological models utilizing the concept of feature filters or detectors may be being prematurely applied to relatively complex perceptual processes. 相似文献