Hierarchies, similarity, and interactivity in object recognition: "category-specific" neuropsychological deficits.

摘要: Category-specific impairments of object recognition and naming are among the most intriguing disorders in neuropsychology, affecting retrieval knowledge about either living or nonliving things. They can give us insight into nature our representations objects: Have we evolved different neural systems for recognizing categories object? What kinds important particular objects? How does visual similarity within a category influence representation? is semantic We review evidence on category-specific impairments, arguing that deficits even one class (e.g., things) cannot be accounted terms single information processing disorder across all patients; problems arise at contrasting loci patients. The same apparent pattern impairment produced by damage to loci. According new framework naming, hierarchical interactive theory (HIT), have hierarchy highly stored representations. HIT explains variety patients (1) lesions levels (2) forms used both tasks object.