scholarly journals Preserved eye sensitivity of the N170 ERP component across face size

2017 ◽  
Vol 17 (10) ◽  
pp. 1029
Author(s):  
Karisa Parkington ◽  
R. Elif Ermis ◽  
Roxane Itier
Keyword(s):  
Face Size

scholarly journals The impact of face size and natural contour on spatial frequency tuning: still no difference between upright and inverted faces!

2015 ◽  
Vol 15 (12) ◽  
pp. 160
Author(s):  
Jessica Royer ◽  
Verena Willenbockel ◽  
Caroline Blais ◽  
Frédéric Gosselin ◽  
Sandra Lafortune ◽  
...  
Keyword(s):  
Spatial Frequency ◽  
Frequency Tuning ◽  
Spatial Frequency Tuning ◽  
The Impact ◽  
Face Size

scholarly journals Perceived face size in healthy adults

PLoS ONE ◽  
2017 ◽  
Vol 12 (5) ◽  
pp. e0177349 ◽  
Author(s):  
Sarah D’Amour ◽  
Laurence R. Harris
Keyword(s):  
Healthy Adults ◽  
Face Size

The influence of natural contour and face size on the spatial frequency tuning for identifying upright and inverted faces

2016 ◽  
Vol 81 (1) ◽  
pp. 13-23 ◽  
Author(s):  
Jessica Royer ◽  
Verena Willenbockel ◽  
Caroline Blais ◽  
Frédéric Gosselin ◽  
Sandra Lafortune ◽  
...  
Keyword(s):  
Spatial Frequency ◽  
Frequency Tuning ◽  
Spatial Frequency Tuning ◽  
Face Size

On ${\bi d}$ -Diagonal Colorings of Embedded Graphs of Low Maximum Face Size

1998 ◽  
Vol 14 (1) ◽  
pp. 81-94 ◽  
Author(s):  
Daniel P. Sanders ◽  
Yue Zhao
Keyword(s):  
Embedded Graphs ◽  
Face Size

scholarly journals Very small faces are easily discriminated under long and short exposure times

2018 ◽  
Vol 119 (5) ◽  
pp. 1599-1607
Author(s):  
Moshe Gur
Keyword(s):  
Face Perception ◽  
High Spatial Frequency ◽  
Short Exposure ◽  
Temporal Code ◽  
Physiological Mechanisms ◽  
Face Width ◽  
Wide Range ◽  
Face Stimuli ◽  
Small Image ◽  
Face Size

Acuity measures related to overall face size that can be perceived have not been studied quantitatively. Consequently, experimenters use a wide range of sizes (usually large) without always providing a rationale for their choices. I studied thresholds for face discrimination by presenting both long (500 ms)- and short (17, 33, 50 ms)-duration stimuli. Face width threshold for the long presentation was ~0.2°, and thresholds for the flashed stimuli ranged from ~0.3° for the 17-ms flash to ~0.23° for the 33- and 50-ms flashes. Such thresholds indicate that face stimuli used in physiological or psychophysical experiments are often too large to tap human fine spatial capabilities, and thus interpretations of such experiments should take into account face discrimination acuity. The 0.2° threshold found in this study is incompatible with the prevalent view that faces are represented by a population of specialized “face cells” because those cells do not respond to <1° stimuli and are optimally tuned to >4° faces. Also, the ability to discriminate small, high-spatial frequency flashed face stimuli is inconsistent with models suggesting that fixational drift transforms retinal spatial patterns into a temporal code. It seems therefore that the small image motions occurring during fixation do not disrupt our perception, because all relevant processing is over with before those motions can have significant effects. NEW & NOTEWORTHY Although face perception is central to human behavior, the minimally perceived face size is not known. This study shows that humans can discriminate very small (~0.2°) faces. Furthermore, even when flashed for tens of milliseconds, ~0.25° faces can be discriminated. Such fine acuity should impact modeling of physiological mechanisms of face perception. The ability to discriminate flashed faces where there is almost no eye movement indicates that eye drift is not essential for visibility.

scholarly journals Holistic processing in the composite task depends on face size

2015 ◽  
Vol 23 (5) ◽  
pp. 533-545 ◽  
Author(s):  
David A. Ross ◽  
Isabel Gauthier
Keyword(s):  
Holistic Processing ◽  
Face Size

scholarly journals Correlations Between Root Length and Face Size

1980 ◽  
Vol 59 (2) ◽  
pp. 141-141 ◽  
Author(s):  
S.M. Garn ◽  
B.H. Smith ◽  
P.E. Cole
Keyword(s):  
Root Length ◽  
Face Size
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