Identification of fragmented pictures in patients with brain damage

Maria Pia Viggiano, Sabrina Pitzalis

Research output: Contribution to journalArticlepeer-review


Identification of fragmented pictures was investigated using line drawings (Snodgrass, Smith, Feenan, and Corwin, 1987) in 236 healthy participants and 43 patients with unilateral lesions of the right or left hemisphere. Perceptual closure (the integration of fragments into a meaningful perceptual whole) depended on the amount of physical visual information, the age of the patient, and the location of the lesion. Patients with right-side lesions showed more impairment than those with left-side lesions, confirming the importance of the right hemisphere in perceptual close tasks. Right-hemisphere functions involved in perceptual closure, however, were not completely abolished, as performance improved with increasing visual information. The advantages of Snodgrass fragmented pictures as a neuropsychological test are discussed.

Original languageEnglish
Pages (from-to)93-99
Number of pages7
JournalApplied Neuropsychology:Adult
Issue number2
Publication statusPublished - 1998


  • Aging
  • Brain lesions
  • Fragmented pictures
  • Perceptual closure
  • Right hemisphere
  • Vision

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology

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