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Inhibition of feature extraction with multiple instances of the target feature in different orientations

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Summary

Analyses of alphabetic confusion matrices have produced feature lists defined in terms of confusability of characters thought to contain them. Identical shapes of low confusability (e.g., b, d, p, q) therefore share few or no features. Several researchers have observed mutual inhibition of feature extraction with simultaneously presented confusable shapes. Mutual inhibition observed in the current experiments provides a basis for a definition of features in terms of orientation-independent structural relationships. In the first experiment, four alphanumeric characters were each confused with one other character in this same set; however, when another set was formed by reorienting some of these same shapes to become different characters (e.g., 6 to 9), these confusions disappeared. In the second experiment, characters within each set were exposed parafoveally in pairs to different groups of subjects. If members of a pair were similar in shape (disregarding orientation), identification accuracy was poorer than if they were not. Similar shapes in the same orientation were not signficantly more mutually inhibiting than similar shapes in different orientations.

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References

  • Bjork EL, Murray JT (1977) On the nature of input channels in visual processing. Psychol Rev 84:472–484

    Google Scholar 

  • Blake J (1976) Parallel processing of position and form information in young children. Percept Psychophys 20:403–407

    Google Scholar 

  • Bouma H (1971) Visual recognition of isolated lower-case letters. Vis Res 11:459–474

    Google Scholar 

  • Estes WK (1972) Interactions of signal and background variables in visual processing. Percept Psychophys 12:278–286

    Google Scholar 

  • Estes WK (1974) Redundancy of noise elements and signals in visual detection of letters. Percept Psychophys 16:53–60

    Google Scholar 

  • Gibson EJ, Osser H, Schiff W, Smith J (1963) An analysis of critical features of letters, tested by a confusion matrix. In: A basic research program on reading. Cooperative Research Project No. 639, US Office of Education

  • Kinney GC, Marsetta M, Showman DJ (1966) Studies in display symbol legibility, Part XII. The legibility of symbols for digitalized television. ESD-TR-66-117. The Mitre Corporation, Bedford Mass

    Google Scholar 

  • Krumhansl CL, Thomas EAC (1976) Extracting identity and location information from briefly presented letter arrays. Percept Psychophys 20:243–258

    Google Scholar 

  • Krumhansl CL. Thomas EAC (1977) Effect of level of confusability on reporting letters from briefly presented visual displays. Percept Psychophys 21:269–279

    Google Scholar 

  • Leitner EF (1978) Independent processing of letter location and identity information. Presented at the Nineteenth Annual Meeting of the Psychonomic Society in San Antonio, Texas

  • Rumelhart DE (1971) A multicomponent theory of confusion among briefly exposed alphabetic characters. CHIP 22. Center for Human Information Processing, University of California, San Diego

    Google Scholar 

  • Rumelhart DE, Siple P (1974) Process of recognizing tachistoscopically presented words. Psychol Rev 81:99–118

    Google Scholar 

  • Santee JL, Egeth HE (1980) Interference in letter identification: A test of feature specific inhibition. Percept Psychophys 27:321–330

    Google Scholar 

  • Selfridge O (1959) Pandemonium: A paradigm for learning. In: Symposium on the mechanization of thought processes. HMSO, London

    Google Scholar 

  • Townsend JT (1971) Theoretical analysis of an alphabetic confusion matrix. Percept Psychophys 9:40–50

    Google Scholar 

Download references

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Chastain, G. Inhibition of feature extraction with multiple instances of the target feature in different orientations. Psychol. Res 43, 45–56 (1981). https://doi.org/10.1007/BF00309637

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  • DOI: https://doi.org/10.1007/BF00309637

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