title: Recognition of random shapes in unilateral brain damaged patients: a reappraisal.
abstract: The performance of unilateral brain-damaged patients on recognition of random shapes was investigated by means of two different experiments. In experiment I interitem similarity and number of response-choice alternatives were varied to evaluate their possible influence on the subjects' performance. In experiment II stimulus exposure time was varied, In both experiments left brain-damaged patients with visual field defect obtained lower scores than control subjects. Right brain-damaged patients with visual field defect obtained scores significantly lower than controls only in the brief exposure condition.
mesh_terms: D001925:Brain Damage, Chronic / Q000523:psychology*; D004193:Discrimination Learning; D004292:Dominance, Cerebral; D005556:Form Perception; D006801:Humans; D010364:Pattern Recognition, Visual