Patients with the less frequently observed opposite pattern of impairment, ie better performance with biological entities than with non-living things, provide evidence for a double dissociation, making a strong case for the categorical organization of the semantic system we describe a patient with a category-specific naming impairment for tools. Abstractmultiple accounts have been proposed to explain category-specific recognition impairments some suggest that category-specific deficits may be caused by a deficit in recurrent processing between the levels of a hierarchically organized visual object recognition system here, we tested predictions of interactive processing theories on the emergence of category-selective naming deficits.
Neuropsychological evidence for the temporal dynamics of category-specific naming sven panisa,b, katrien torfsb, multiple accounts have been proposed to explain category-specific recognition impairments some theories of category-specific naming deficits. Category specific semantic impairments 831 limited set of items can be identified and for other items, at best, only superordinate information is retained (warrington, 1975 coughlan and warrington, 1981.
Category-specific neural processing for naming pictures of animals and naming pictures of tools: an ale meta-analysis category-specific processing in the human brain originally came from studies of neurological patients who had selective impairments in recognizing particular similarity, and interactivity in object recognition. Full-text paper (pdf): category-specific naming and comprehension impairment: a double dissociation. Category-specific naming impairment in temporal lobe epilepsy through cortical electrical stimulation: case report alteraciones en la denominación de categorías específicas en e aylwardcategory-specific naming and recognition deficits in temporal lobe epilepsy t shallicecategory specific semantic impairments brain, 107. Request pdf on researchgate | impairments in pre-semantic processing contribute to category-specific recognition deficits | several accounts have been proposed to explain category-specific.
Patients with category specific recognition impairments for living and non living things have played a crucial role in developing current theories of semantic memory and object recognition this paper reviews a number of the classic cases and discusses the theories that have been developed to account for these impairments. Request pdf on researchgate | category specific recognition impairments: a review of important case studies and influential theories | patients with category specific recognition impairments for.
Categories in the degree of processing demands (shallice, 1988), we argue that the cases provide evidence that it is the organization of semantic information that allows selective preservation or impairment of information in specific semantic categories. Category-specific impairments of object recognition and naming are among the most intriguing disorders in neuropsychology, affecting the retrieval of knowledge about either living or nonliving things. Impairments in pre-semantic processing contribute to category-specific recognition deficits you will receive an email whenever this article is corrected, updated, or cited in the literature you can manage this and all other alerts in my account.
Category-specific agnosias are differential impairments in subject knowledge or recognition abilities pertaining to specific classes of stimuli, such as living things vs non-living things, animate vs inaminate things, food, metals, musical instruments, etc. Category-specific naming deficits were exhibited by patients with dominant anterior tl seizure onset/resection for famous faces and animals, while category-specific recognition deficits for these same categories were exhibited by patients with nondominant anterior tl onset/resection.