The assessment of colour perception, naming and knowledge: A new test device with a case study

Rossella Pagani, Giovanna Bosco, Elisabetta Dalla Valle, Erminio Capitani, Marcella Laiacona

Research output: Contribution to journalArticlepeer-review

Abstract

Besides ocular diseases, also cerebral damage may cause colour vision deficits; cerebral lesions may be associated with a variety of clinical conditions that impair colour processing. This study presents procedures and normative data for a rapid, comprehensive seven-test battery aimed at assessing colour perception, colour naming and object colour knowledge. The norms, obtained from 96 healthy Italian participants, allow normality/pathology judgements on the basis of one-sided tolerance limits, after adjusting the score of each test for the demographic variables of the proband subjects. We also report, as an example, use of the battery in a stroke patient; this patient was chosen because her lesion affected the left temporal- occipital cortex, an area sometimes associated with a deficit of colour processing. The patient resulted normal on colour perception and colour name retrieval, but defective on object colour knowledge probed using the stimulus name. For the sound definition of the functional locus of cognitive impairment at the single case level, a multi-faceted set of tasks is necessary.

Original languageEnglish
Pages (from-to)801-809
Number of pages9
JournalNeurological Sciences
Volume33
Issue number4
DOIs
Publication statusPublished - Aug 2012

Keywords

  • Achromatopsia
  • Colour anomia
  • Object colour knowledge

ASJC Scopus subject areas

  • Clinical Neurology
  • Psychiatry and Mental health
  • Dermatology

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