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Different brain activation patterns during production of animals versus artefacts: a PET activation study on category-specific processing
Tekijät: Laine M, Rinne JO, Hiltunen J, Kaasinen V, Sipila H
Kustantaja: ELSEVIER SCIENCE BV
Julkaisuvuosi: 2002
Journal: Cognitive Brain Research
Tietokannassa oleva lehden nimi: COGNITIVE BRAIN RESEARCH
Lehden akronyymi: COGNITIVE BRAIN RES
Artikkelin numero: PII S0926-6410(01)00095-7
Vuosikerta: 13
Numero: 1
Aloitussivu: 95
Lopetussivu: 99
Sivujen määrä: 5
ISSN: 0926-6410
DOI: https://doi.org/10.1016/S0926-6410(01)00095-7
Tiivistelmä
To study neural correlates of category-specific processing, we measured relative cerebral blood flow changes by PET (oxygen-15) in young healthy subjects while they produced exemplars of animals or artefacts to written subcategory prompts. In comparison to a baseline (word reading), production of animal names elicited increased rCBF in the right inferior temporal region. This fits to recent lesion data on semantic impairment with animals, as well as imaging data on object recognition and semantic retrieval. In our study, it may represent an involvement of visual imagery in generation of animal names. In contrast, production of artefact names elicited increased rCBF in frontoparietal regions previously related to attention and mental effort. (C) 2002 Elsevier Science B.V. All rights reserved.
To study neural correlates of category-specific processing, we measured relative cerebral blood flow changes by PET (oxygen-15) in young healthy subjects while they produced exemplars of animals or artefacts to written subcategory prompts. In comparison to a baseline (word reading), production of animal names elicited increased rCBF in the right inferior temporal region. This fits to recent lesion data on semantic impairment with animals, as well as imaging data on object recognition and semantic retrieval. In our study, it may represent an involvement of visual imagery in generation of animal names. In contrast, production of artefact names elicited increased rCBF in frontoparietal regions previously related to attention and mental effort. (C) 2002 Elsevier Science B.V. All rights reserved.
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