Perception & Psychophysics
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Asymmetries and errors in perception of depth from disparity suggest a multicomponent model of disparity processing
Perception & Psychophysics - Tập 59 - Trang 219-231 - 1997
In three experiments, asymmetries between the processing of crossed and uncrossed disparities were investigated. The target was a luminance-defined circle concentric to a fixation mark, viewed stereoscopically on a computer monitor for 105 msec. Fifteen disparities were presented according to the method of constant stimuli. Observers indicated the apparent direction of target depth relative to fix......
Heading and path information from retinal flow in naturalistic environments
Perception & Psychophysics - - 1997
In four experiments, we explored the heading and path information available to observers as we simulated their locomotion through a cluttered environment while they fixated an object off to the side. Previously, we presented a theory about the information available and used in such situations. For such a theory to be valid, one must be sure of eye position, but we had been unable to monitor gaze s......
Operator behavior in a dynamic visual signal detection task
Perception & Psychophysics - Tập 4 - Trang 5-9 - 1968
The effects of changes in signal-to-noise ratio (SIN) and feedback state on the operator’s detection behavior, particularly derived operator thresholds, were investigated using a discrete visual signal. It was found that: (1) the operator behaves as if he has established different thresholds as a function of S/N; (2) his decision thresholds are relatively independent of the presence or absence of ......
Auditory pattern perception: The effect of tonal frequency range on the perception of temporal order
Perception & Psychophysics - Tập 43 - Trang 293-303 - 1988
Previous research in auditory sequence recognition based on the order of the components has suggested two conflicting hypotheses. This paper explores possible reasons for the conflict, and proposes a $hybrid% hypothesis consistent with the published data: The discrimination of sequences is better when permuted tones belong to a single perceived group, but the order of tones in different perceived ......
Isobias curves in some detection tasks
Perception & Psychophysics - Tập 33 - Trang 403-412 - 1983
Signal/noise ratio was varied in three tone-detection tasks while other conditions were held constant, generating 9 8-point and 12 12-point isobias plots. These plots were compared with the theoretical isobias curves associated with seven proposed bias measures. Each of the proposed measures covaried with signal/noise ratio in at least half of the data. For two of the plots, none of the measures w......
On the analysis of psychometric functions: The Spearman-Kärber method
Perception & Psychophysics - Tập 63 - Trang 1399-1420 - 2001
With computer simulations, we examined the performance of the Spearman-Kärber method for analyzing psychometric functions and compared this method with the standard technique of probit analysis. The Spearman-Kärber method was found to be superior in most cases. It generally yielded less biased and less variable estimates of the location and dispersion of a psychometric function, and it provided mo......
Range of acceptable stimulus intensities: An estimator of dynamic range for intensive perceptual continua
Perception & Psychophysics - Tập 59 - Trang 721-728 - 1997
The dynamic range (DR) of a sensory system is the span (usually given in log units) from the lowest to highest intensities over which a continuously graded response is evoked, and may be a distinctive feature of each such system. Teghtsoonian (1971) proposed that, although DR varies widely over sensory systems, itssubjective size (SDR) is invariant. Assuming the psychophysical power law, the expon......
Identification and discrimination of handshape in American Sign Language
Perception & Psychophysics - Tập 29 - Trang 261-276 - 1981
Lane, Boyes-Braem, and Bellugi (1976) suggested that American Sign Language (ASL) was perceived according to distinctive features, as is the case with speech. They advanced a binary model of distinctive features for one component of ASL signs, handshape. To test the validity of this model, three native users of ASL and three English speakers who knew no ASL participated in two experiments. In the ......
The absence of an auditory-visual attentional blink is not due to echoic memory
Perception & Psychophysics - - 2007
The second of two targets is often missed when presented shortly after the first target—a phenomenon referred to as the attentional blink (AB). Whereas the AB is a robust phenomenon within sensory modalities, the evidence for cross-modal ABs is rather mixed. Here, we test the possibility that the absence of an auditory-visual AB for visual letter recognition when streams of tones are used is due t......
Interference and facilitation in short-term memory for odors
Perception & Psychophysics - Tập 36 - Trang 508-514 - 1984
This study investigated short-term memory for odors using a four-alternative, forced-choiced recognition paradigm. Stimuli were the odors of 36 common food substances. Twelve subjects were tested in each of four conditions, which differed in the activity performed during the retention interval. Recognition performance was poorest when subjects free associated to an additional odorant presented dur......
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