Effective frequency tuning of three face categorization tasks

Fiset, Daniel; Blais, Caroline; Gosselin, Frédéric; Schyns, Philippe G.

doi:10.1167/6.6.273

Cited by 1 publication

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“…Here, we re-examined whether the identification of upright and inverted faces is mediated by different SFs using a novel SF variant of the Bubbles technique (Fiset, Blais, Gosselin, & Schyns, 2006; Gosselin & Schyns, 2001; see McCotter, Gosselin, Sowden, & Schyns, 2005, for a distinct attempt at applying Bubbles to SFs). The Bubbles technique has been applied to full-spectrum images (e.g., Gosselin & Schyns, 2001, Experiment 1) as well as band-pass filtered images (e.g., Gosselin & Schyns, 2001, Experiment 2; Schyns et al, 2002).…”

Section: Spatial Frequency Tuning For Face Identificationmentioning

confidence: 99%

Does face inversion change spatial frequency tuning?

Willenbockel¹,

Fiset²,

Chauvin³

et al. 2010

Journal of Experimental Psychology: Human Perception and Perfor

104

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The authors examined spatial frequency (SF) tuning of upright and inverted face identification using an SF variant of the Bubbles technique (F. Gosselin & P. G. Schyns, 2001). In Experiment 1, they validated the SF Bubbles technique in a plaid detection task. In Experiments 2a-c, the SFs used for identifying upright and inverted inner facial features were investigated. Although a clear inversion effect was present (mean accuracy was 24% higher and response times 455 ms shorter for upright faces), SF tunings were remarkably similar in both orientation conditions (mean r ϭ .98; an SF band of 1.9 octaves centered at 9.8 cycles per face width for faces of about 6°). In Experiments 3a and b, the authors demonstrated that their technique is sensitive to both subtle bottom-up and top-down induced changes in SF tuning, suggesting that the null results of Experiments 2a-c are real. The most parsimonious explanation of the findings is provided by the quantitative account of the face inversion effect: The same information is used for identifying upright and inverted inner facial features, but processing has greater sensitivity with the former.

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