Perception of slant-in-depth is automatic.
Two experiments assessed perception of the slant-in-depth of static irregularly contoured shapes when attention was withdrawn from processing slant-in-depth. The experiments showed that when the memory load of the experimental task is minimal, discrimination of slant-in-depth is evidenced even when attention has not been directed to slant discrimination. The findings are brought to bear on a model of perceiving shape-at-a-slant (Epstein & Lovitts, 1985) that partitions the components of the process into automatic and attention-demanding operations.
Epstein
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Babler
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D000328:Adult; D001288:Attention; D003867:Depth Perception; D004193:Discrimination Learning; D005556:Form Perception; D006801:Humans; D009949:Orientation; D010364:Pattern Recognition, Visual