Limits...
Misaligned and Polarity-Reversed Faces Determine Face-specific Capacity Limits

View Article: PubMed Central - PubMed

ABSTRACT

Previous research using flanker paradigms suggests that peripheral distracter faces are automatically processed when participants have to classify a single central familiar target face. These distracter interference effects disappear when the central task contains additional anonymous (non-target) faces that load the search for the face target, but not when the central task contains additional non-face stimuli, suggesting there are face-specific capacity limits in visual processing. Here we tested whether manipulating the format of non-target faces in the search task affected face-specific capacity limits. Experiment 1 replicated earlier findings that a distracter face is processed even in high load conditions when participants looked for a target name of a famous person among additional names (non-targets) in a central search array. Two further experiments show that when targets and non-targets were faces (instead of names), however, distracter interference was eliminated under high load—adding non-target faces to the search array exhausted processing capacity for peripheral faces. The novel finding was that replacing non-target faces with images that consisted of two horizontally misaligned face-parts reduced distracter processing. Similar results were found when the polarity of a non-target face image was reversed. These results indicate that face-specific capacity limits are not determined by the configural properties of face processing, but by face parts.

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Related in: MedlinePlus

Example of a trial display in the congruent condition with a relevant set size of one (left panel), three (middle panel) and with misaligned non-target faces (right panel) in Experiment 2. Note: The versions of the faces shown here differ from the images used in the actual experiments due to copyright limitations. The image of Tony Blair is a cropped version of an originally larger photograph depicting Tony Blair and Robert M. Gates. As a work of the U.S. federal government, the image is in the public domain. The author holds the copyright to the other two images, and has permission of the persons to use them for publication.
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Figure 3: Example of a trial display in the congruent condition with a relevant set size of one (left panel), three (middle panel) and with misaligned non-target faces (right panel) in Experiment 2. Note: The versions of the faces shown here differ from the images used in the actual experiments due to copyright limitations. The image of Tony Blair is a cropped version of an originally larger photograph depicting Tony Blair and Robert M. Gates. As a work of the U.S. federal government, the image is in the public domain. The author holds the copyright to the other two images, and has permission of the persons to use them for publication.

Mentions: Examples of displays in Experiment 1. Shown is a congruent display with a relevant set size of three items (left panel) or six items (right panel; see caption of Figure 3 for copyright information on the face images).


Misaligned and Polarity-Reversed Faces Determine Face-specific Capacity Limits
Example of a trial display in the congruent condition with a relevant set size of one (left panel), three (middle panel) and with misaligned non-target faces (right panel) in Experiment 2. Note: The versions of the faces shown here differ from the images used in the actual experiments due to copyright limitations. The image of Tony Blair is a cropped version of an originally larger photograph depicting Tony Blair and Robert M. Gates. As a work of the U.S. federal government, the image is in the public domain. The author holds the copyright to the other two images, and has permission of the persons to use them for publication.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5037134&req=5

Figure 3: Example of a trial display in the congruent condition with a relevant set size of one (left panel), three (middle panel) and with misaligned non-target faces (right panel) in Experiment 2. Note: The versions of the faces shown here differ from the images used in the actual experiments due to copyright limitations. The image of Tony Blair is a cropped version of an originally larger photograph depicting Tony Blair and Robert M. Gates. As a work of the U.S. federal government, the image is in the public domain. The author holds the copyright to the other two images, and has permission of the persons to use them for publication.
Mentions: Examples of displays in Experiment 1. Shown is a congruent display with a relevant set size of three items (left panel) or six items (right panel; see caption of Figure 3 for copyright information on the face images).

View Article: PubMed Central - PubMed

ABSTRACT

Previous research using flanker paradigms suggests that peripheral distracter faces are automatically processed when participants have to classify a single central familiar target face. These distracter interference effects disappear when the central task contains additional anonymous (non-target) faces that load the search for the face target, but not when the central task contains additional non-face stimuli, suggesting there are face-specific capacity limits in visual processing. Here we tested whether manipulating the format of non-target faces in the search task affected face-specific capacity limits. Experiment 1 replicated earlier findings that a distracter face is processed even in high load conditions when participants looked for a target name of a famous person among additional names (non-targets) in a central search array. Two further experiments show that when targets and non-targets were faces (instead of names), however, distracter interference was eliminated under high load—adding non-target faces to the search array exhausted processing capacity for peripheral faces. The novel finding was that replacing non-target faces with images that consisted of two horizontally misaligned face-parts reduced distracter processing. Similar results were found when the polarity of a non-target face image was reversed. These results indicate that face-specific capacity limits are not determined by the configural properties of face processing, but by face parts.

No MeSH data available.


Related in: MedlinePlus