English
Albanian
Arabic
Armenian
Azerbaijani
Belarusian
Bengali
Bosnian
Catalan
Czech
Danish
Deutsch
Dutch
English
Estonian
Finnish
Français
Greek
Haitian Creole
Hebrew
Hindi
Hungarian
Icelandic
Indonesian
Irish
Italian
Japanese
Korean
Latvian
Lithuanian
Macedonian
Mongolian
Norwegian
Persian
Polish
Portuguese
Romanian
Russian
Serbian
Slovak
Slovenian
Spanish
Swahili
Swedish
Turkish
Ukrainian
Vietnamese
Български
中文(简体)
中文(繁體)
Cognitive Neuropsychology 2002-Jul

The role of premorbid expertise on object identification in a patient with category-specific visual agnosia.

Only registered users can translate articles
Log In/Sign up
The link is saved to the clipboard
Mike J Dixon
Genevieve Desmarais
Christina Gojmerac
Tom A Schweizer
Daniel N Bub

Keywords

Abstract

The role of premorbid expertise in object identification was investigated in the category-specific visual agnosia patient ELM. For several years prior to his stroke ELM played bugle in a military band. We surmised that band membership would lead to preferential exposure to, and expertise for, brass instruments relative to other musical-instrument families. To test this hypothesis we assessed ELM's musical instrument identification capability for brass and stringed instruments. Testing was conducted 14 years post-stroke. ELM listed significantly more correct attributes for five brass instruments than for five stringed instruments. On a picture-word matching task ELM showed significantly better identification of brass, relative to stringed, musical instruments. Finally, when ELM was required to pair novel shapes with labels denoting brass or stringed instruments, he made significantly more errors in the stringed-instrument condition than in the brass-instrument condition. We conclude that the elevated attribute knowledge accompanying expertise serves to increase the visual and semantic distance between objects within a category, thereby protecting them against identification deficits in the context of category-specific visual agnosia.

Join our facebook page

The most complete medicinal herbs database backed by science

  • Works in 55 languages
  • Herbal cures backed by science
  • Herbs recognition by image
  • Interactive GPS map - tag herbs on location (coming soon)
  • Read scientific publications related to your search
  • Search medicinal herbs by their effects
  • Organize your interests and stay up do date with the news research, clinical trials and patents

Type a symptom or a disease and read about herbs that might help, type a herb and see diseases and symptoms it is used against.
*All information is based on published scientific research

Google Play badgeApp Store badge