Abstract
It has been shown that there is a transition from a global to a local advantage in reaction time as visual angle increases (Kinchla & Wolfe, 1979), and it has been assumed that this transition reflects lower level (e.g., retinal) processes. In three experiments, we examined whether higher level (e.g., attentional) processes play a role in this transition. In each experiment, subjects received a different stimulus set in each of two blocks of trials. In Experiment 1, stimuli subtending 1.5°, 3°, 4.5°, or 6° of visual angle vertically (small-stimuli set) were randomly presented in one block, while the other block consisted of random presentations of 3°, 6°, 9°, or 12° stimuli (large-stimuli set), The subjects’ task was to identify targets that appeared randomly at either the local or the global level. It was found that the transition from a global to a local reaction-time advantage took place at a larger visual angle for the large-stimuli set than for the small-stimuli set. The same effects of stimulus set were found in Experiment 2, in which the small-stimuli set included 1.5°, 3°, or 6° stimuli while the large-stimuli set included 3°, 6°, or 9° stimuli. In Experiment 3, eye position was monitored to rule out the possibility that subjects adopted different fixation strategies depending on which stimulus set was being presented. The findings suggest that attention plays a major role in determining the relative speed of processing of local-and global-level information.
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Boer, L. C., &Keuss, P. J. G. (1982). Global precedence as a post-perceptual effect: An analysis of speed-accuracy tradeoff functions.Perception & Psychophysics,31, 358–366.
Delis, D. C., Robertson, L. C., &.Heron, R. (1986). Hemispheric specialization of memory for visual hierarchical stimuli.Neuropsychologia,24, 205–214.
Grice, G. C., Canham, L.,&Boroughs, J. M. (1983). Forest before trees? If depends where you look.Perception & Psychophysics,33, 121–128.
Hoffman, J. (1980). Interaction between global and local levels of form.Journal of Experimental Psychology: Human Perception & Performance,6, 222–234.
Hughes, H. C., Layton, W. M., Baird, J. C. &Lester, L. S. (1984). Global precedence in visual pattern recognition.Perception & Psychophysics,35, 361–371.
Kinchla, R. A., Solis-Macias, V., &Hoffman, J. (1983). Attending to different levels of structure in a visual image.Perception & Psychophysics,33, 1–10.
Kinchla, R. A., &Wolfe, J. M. (1979). The order of visual processing; “Top down,” “Bottom up,” or “Middle out.”Perception & Psychophysics,25, 225–231.
Lamb, M. R., &Robertson, L. C. (1987). The effects of acute alcohol on attention and the processing of hierarchical patterns.Alcoholism: Clinical & Experimental Research,11, 243–248.
Lamb, M. R., &Robertson, L. C. (1988). The processing of hierarchical stimuli: Effects of retinal locus, locational uncertainty, and stimulus identity.Perception & Psychophysics,44, 172–181.
Lamb, M. R., &Robertson, L. C. (1989). Do response time advantage and interference reflect the order of processing of global- and local-level information?Perception & Psychophysics,46, 254–258.
Lamb, M. R., Robertson, L. C., &.Knight, R. T. (1989). Attention and interference in the processing of hierarchical patterns: Inferences from patients with right and left temporal-parietal lesions.Neuropsychologia,27, 471–483.
Lamb, M. R., Robertson, L. C., & Knight, R. T. (in press). Component mechanisms underlying the processing of hierarchically organized patterns: Inferences from patients with unilateral cortical lesions.Journal of Experimental Psychology: Learning, Memory, & Cognition.
Martin, M. (1979). Local and global processing: The role of sparsity.Memory & Cognition,7, 476–484.
Miller, J. (1981). Global precedence in attention and decision.Journal of Experimental Psychology: Human Perception & Performance,7, 1161–1174.
Navon, D. (1977). Forest before trees: The precedence of global features in visual perception.Cognitive Psychology,9, 353–383.
Navon, D. (1981). Do attention and decision follow perception? Comment on Miller.Journal of Experimental Psychology: Human Perception & Performance,7, 1175–1182.
Paquet, L., &Merikle, P. M. (1988). Global precedence in attended and nonattended objects.Journal of Experimental Psychology: Human Perception & Performance,14, 89–100.
Pomerantz, J. R. (1983). Global and local precedence: Selective attention in form and motion perception.Journal of Experimental Psychology: General,112, 516–540.
Pomerantz, J. R., &Sager, L. C. (1975). Asymmetric integrality with dimensions of visual pattern.Perception & Psychophysics,18, 460–466.
Robertson, L. C., &Delis, D. C. (1986). “Part-whole” processing in unilateral brain damaged patients: Dysfunction of hierarchical organization.Neuropsychologia,24, 363–370.
Robertson, L. C., Lamb, M. R., &Knight, R. T. (1988). Effects of lesions of temporal-parietal junction on perceptual and attentional processing in humans.Journal of Neuroscience,8, 3757–3769.
Shulman, G. L., Sullivan, M. A., Gish, K., &Sakoda, W. J. (1986). The role of spatial-frequency channels in the perception of local and global structure.Perception,15, 259–273.
Shulman, G. L., &Wilson, J. (1987). Spatial frequency and selective attention to local and global information.Perception,16, 89–101.
Ward, L. M. (1982). Determinants of attention to local and global features of visual forms.Journal of Experimental Psychology: Human Perception & Performance,8, 562–581.
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This research was supported by the Medical Research Council of the Veterans Administration, NIH Grant NS27902 to M.R.L., and NIAAA Grant AA06637 to L.C.R.
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Lamb, M.R., Robertson, L.C. The effect of visual angle on global and local reaction times depends on the set of visual angles presented. Perception & Psychophysics 47, 489–496 (1990). https://doi.org/10.3758/BF03208182
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DOI: https://doi.org/10.3758/BF03208182