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Image-invariant responses in face-selective regions do not explain the perceptual advantage for familiar face recognition.

Davies-Thompson J, Newling K, Andrews TJ - Cereb. Cortex (2012)

Bottom Line: Here, we used an functional magnetic resonance-adaptation paradigm to investigate image invariance in face-selective regions of the human brain.We found clear evidence for a degree of image-invariant adaptation to facial identity in face-selective regions, such as the fusiform face area.This suggests that the marked differences in the perception of familiar and unfamiliar faces may not depend on differences in the way multiple images are represented in core face-selective regions of the human brain.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychology, York Neuroimaging Centre, University of York, York YO10 5DD, UK.

ABSTRACT
The ability to recognize familiar faces across different viewing conditions contrasts with the inherent difficulty in the perception of unfamiliar faces across similar image manipulations. It is widely believed that this difference in perception and recognition is based on the neural representation for familiar faces being less sensitive to changes in the image than it is for unfamiliar faces. Here, we used an functional magnetic resonance-adaptation paradigm to investigate image invariance in face-selective regions of the human brain. We found clear evidence for a degree of image-invariant adaptation to facial identity in face-selective regions, such as the fusiform face area. However, contrary to the predictions of models of face processing, comparable levels of image invariance were evident for both familiar and unfamiliar faces. This suggests that the marked differences in the perception of familiar and unfamiliar faces may not depend on differences in the way multiple images are represented in core face-selective regions of the human brain.

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Related in: MedlinePlus

Design and images used in Experiment 1. Successive images were either the same, different images of the same person (different image) or images of different identities. Pairs of images were either familiar or unfamiliar faces.
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fig1: Design and images used in Experiment 1. Successive images were either the same, different images of the same person (different image) or images of different identities. Pairs of images were either familiar or unfamiliar faces.

Mentions: A behavioral experiment was used to determine the ability of participants to identify familiar and unfamiliar faces. Twenty participants took part in Experiment 1 (10 females; mean age, 27). Pairs of images were presented in succession, and participants were asked to indicate by a button press whether the 2 face images were from the same person or from 2 different people (Fig. 1). Each face was presented for 700 ms and separated by an interval of 300 ms. There were 3 possible conditions: same image (identical face images), different images (different images of the same person), and different identity (different images of different people). Each participant viewed a total of 256 trials.


Image-invariant responses in face-selective regions do not explain the perceptual advantage for familiar face recognition.

Davies-Thompson J, Newling K, Andrews TJ - Cereb. Cortex (2012)

Design and images used in Experiment 1. Successive images were either the same, different images of the same person (different image) or images of different identities. Pairs of images were either familiar or unfamiliar faces.
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3539454&req=5

fig1: Design and images used in Experiment 1. Successive images were either the same, different images of the same person (different image) or images of different identities. Pairs of images were either familiar or unfamiliar faces.
Mentions: A behavioral experiment was used to determine the ability of participants to identify familiar and unfamiliar faces. Twenty participants took part in Experiment 1 (10 females; mean age, 27). Pairs of images were presented in succession, and participants were asked to indicate by a button press whether the 2 face images were from the same person or from 2 different people (Fig. 1). Each face was presented for 700 ms and separated by an interval of 300 ms. There were 3 possible conditions: same image (identical face images), different images (different images of the same person), and different identity (different images of different people). Each participant viewed a total of 256 trials.

Bottom Line: Here, we used an functional magnetic resonance-adaptation paradigm to investigate image invariance in face-selective regions of the human brain.We found clear evidence for a degree of image-invariant adaptation to facial identity in face-selective regions, such as the fusiform face area.This suggests that the marked differences in the perception of familiar and unfamiliar faces may not depend on differences in the way multiple images are represented in core face-selective regions of the human brain.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychology, York Neuroimaging Centre, University of York, York YO10 5DD, UK.

ABSTRACT
The ability to recognize familiar faces across different viewing conditions contrasts with the inherent difficulty in the perception of unfamiliar faces across similar image manipulations. It is widely believed that this difference in perception and recognition is based on the neural representation for familiar faces being less sensitive to changes in the image than it is for unfamiliar faces. Here, we used an functional magnetic resonance-adaptation paradigm to investigate image invariance in face-selective regions of the human brain. We found clear evidence for a degree of image-invariant adaptation to facial identity in face-selective regions, such as the fusiform face area. However, contrary to the predictions of models of face processing, comparable levels of image invariance were evident for both familiar and unfamiliar faces. This suggests that the marked differences in the perception of familiar and unfamiliar faces may not depend on differences in the way multiple images are represented in core face-selective regions of the human brain.

Show MeSH
Related in: MedlinePlus