Attention Directed by Precues Has Different Effects on Discriminationof Target Lines Presented Alone and Connected to a Context
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The suggestion that attention may have different effects on discrimination of different tasks has been supported by a growing number of studies (e.g., Cheal, Lyon, & Hubbard, 1989). Currently a novel treatment, a topological explanation, of the finding by Briand & Klein (1987) has been put forward by Han & Chen (1993): The essence of the different mechanisms, which mediate the spatial selective attention precued by peripheral and central cues, may be considered from the perspective of topological perception (Chen, 1982a) and be reinterpreted as discrimination of local geometric properties which benefits more from attention directed by peripheral cues than does discrimination of topological properties.