When connectedness increases hemispatial neglect

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Abstract

Patients with left neglect were tested with "chimeric" figures composed of the right and left halves of two different objects. The connectivity relation was modulated between the two half figures. For some displays, the two chimeric halves were separated by a small gap, while in others, the separate halves were connected by a line segment. In line with previous reports, performance on reporting the left half improved when the chimera were separated; but when a line connected the two separated halves the advantage was lost. If the connecting line was broken, the performance was again enhanced. The results suggest an important role for connectedness in the representation of perceptual objects and in the distribution of attention in neglect. © 2011 Tian et al.

Figures

  • Table 1. Demographic and clinical characteristics of hemispatial neglect patients.
  • Figure 1. Lesion overlap after summation for all neglect patients (n = 10).
  • Figure 2. Proportion of correct identifications of the left side of the figures under the conditions of Chimeric, Chimeric-Gap, and Chimeric-Connected. (A) Experiment 1, spatial separation for Chimeric-Gap condition and connection by a line segment for ChimericConnected condition. (B) Experiment 2, a broken line in the gap for Chimeric-Gap condition and connection by a random curve for Chimeric-Connected condition. The error bars show the stand errors of the means. doi:10.1371/journal.pone.0024760.g002

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CITATION STYLE

APA

Tian, Y., Huang, Y., Zhou, K., Humphreys, G. W., Riddoch, M. J., & Wang, K. (2011). When connectedness increases hemispatial neglect. PLoS ONE, 6(9). https://doi.org/10.1371/journal.pone.0024760

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