Covert attention enhances letter identification without affecting channel tuning | Zendy

Cigdem P. Talgar | Zendy; Denis G. Pelli | Zendy; M. Carrasco | Zendy

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Covert attention enhances letter identification without affecting channel tuning

Author(s) -

Cigdem P. Talgar,

Denis G. Pelli,

M. Carrasco

Publication year - 2004

Publication title -

journal of vision

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.126

H-Index - 113

ISSN - 1534-7362

DOI - 10.1167/4.1.3

Subject(s) - covert , channel (broadcasting) , computer science , identification (biology) , masking (illustration) , sensitivity (control systems) , covert channel , critical band , speech recognition , telecommunications , electronic engineering , engineering , biology , art , philosophy , linguistics , botany , visual arts , cloud computing , security information and event management , cloud computing security , operating system

Directing covert attention to the target location enhances sensitivity, but it is not clear how this enhancement comes about. Knowing that a single spatial frequency channel mediates letter identification, we use the critical-band-masking paradigm to investigate whether covert attention affects the spatial frequency tuning of that channel. We find that directing attention to the target location halves threshold energy without affecting the channel's spatial frequency tuning.

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