Human (Homo sapiens) and baboon (Papio papio) chimeric face processing: Right-hemisphere involvement.

2013 ◽  
Vol 127 (3) ◽  
pp. 237-244 ◽  
Author(s):  
Catherine Wallez ◽  
Jacques Vauclair
Keyword(s):  
Face Processing ◽  
Right Hemisphere ◽  
Homo Sapiens ◽  
Papio Papio

Associative learning in baboons (Papio papio) and humans (Homo sapiens): species differences in learned attention to visual features

1998 ◽  
Vol 1 (2) ◽  
pp. 123-133 ◽  
Author(s):  
Joël Fagot ◽  
John K. Kruschke ◽  
Delphine Dépy ◽  
Jacques Vauclair
Keyword(s):  
Associative Learning ◽  
Species Differences ◽  
Homo Sapiens ◽  
Visual Features ◽  
Papio Papio

scholarly journals Upright or inverted, entire or exploded: right-hemispheric superiority in face recognition withstands multiple spatial manipulations

PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1456 ◽  
Author(s):  
Giulia Prete ◽  
Daniele Marzoli ◽  
Luca Tommasi
Keyword(s):  
Face Recognition ◽  
Social Interactions ◽  
Face Processing ◽  
Right Hemisphere ◽  
Hemispheric Specialization ◽  
Spatial Relations ◽  
Hemispheric Lateralization ◽  
Social Stimuli ◽  
Identity Recognition ◽  
The Right

Background.The ability to identify faces has been interpreted as a cerebral specialization based on the evolutionary importance of these social stimuli, and a number of studies have shown that this function is mainly lateralized in the right hemisphere. The aim of this study was to assess the right-hemispheric specialization in face recognition in unfamiliar circumstances.Methods.Using a divided visual field paradigm, we investigated hemispheric asymmetries in the matching of two subsequent faces, using two types of transformation hindering identity recognition, namely upside-down rotation and spatial “explosion” (female and male faces were fractured into parts so that their mutual spatial relations were left intact), as well as their combination.Results.We confirmed the right-hemispheric superiority in face processing. Moreover, we found a decrease of the identity recognition for more extreme “levels of explosion” and for faces presented upside-down (either as sample or target stimuli) than for faces presented upright, as well as an advantage in the matching of female compared to male faces.Discussion.We conclude that the right-hemispheric superiority for face processing is not an epiphenomenon of our expertise, because we are not often exposed to inverted and “exploded” faces, but rather a robust hemispheric lateralization. We speculate that these results could be attributable to the prevalence of right-handedness in humans and/or to early biases in social interactions.

Hemispheric Asymmetries for Whole-Based and Part-Based Face Processing in the Human Fusiform Gyrus

2000 ◽  
Vol 12 (5) ◽  
pp. 793-802 ◽  
Author(s):  
Bruno Rossion ◽  
Laurence Dricot ◽  
Anne Devolder ◽  
Jean-Michel Bodart ◽  
Marc Crommelinck ◽  
...  
Keyword(s):  
Face Processing ◽  
Right Hemisphere ◽  
Fusiform Gyrus ◽  
Homologous Region ◽  
Double Dissociation ◽  
Face Features ◽  
Behavioral Studies ◽  
Anatomical Localization ◽  
The Right ◽  
New Evidence

Behavioral studies indicate a right hemisphere advantage for processing a face as a whole and a left hemisphere superiority for processing based on face features. The present PET study identifies the anatomical localization of these effects in well-defined regions of the middle fusiform gyri of both hemispheres. The right middle fusiform gyrus, previously described as a face-specific region, was found to be more activated when matching whole faces than face parts whereas this pattern of activity was reversed in the left homologous region. These lateralized differences appeared to be specific to faces since control objects processed either as wholes or parts did not induce any change of activity within these regions. This double dissociation between two modes of face processing brings new evidence regarding the lateralized localization of face individualization mechanisms in the human brain.

scholarly journals Erratum: Expert face processing requires visual input to the right hemisphere during infancy

2003 ◽  
Vol 6 (12) ◽  
pp. 1329-1329
Author(s):  
Richard Le Grand ◽  
Catherine J Mondloch ◽  
Daphne Maurer ◽  
Henry P Brent
Keyword(s):  
Face Processing ◽  
Right Hemisphere ◽  
Visual Input ◽  
The Right

scholarly journals Reduction in White Matter Connectivity, Revealed by Diffusion Tensor Imaging, May Account for Age-related Changes in Face Perception

2008 ◽  
Vol 20 (2) ◽  
pp. 268-284 ◽  
Author(s):  
Cibu Thomas ◽  
Linda Moya ◽  
Galia Avidan ◽  
Kate Humphreys ◽  
Kwan Jin Jung ◽  
...  
Keyword(s):  
Diffusion Tensor Imaging ◽  
White Matter ◽  
Face Perception ◽  
Face Processing ◽  
Right Hemisphere ◽  
Diffusion Tensor ◽  
Temporal Cortex ◽  
Age Related ◽  
The Right ◽  
White Matter Connectivity

An age-related decline in face processing, even under conditions in which learning and memory are not implicated, has been well documented, but the mechanism underlying this perceptual alteration remains unknown. Here, we examine whether this behavioral change may be accounted for by a reduction in white matter connectivity with age. To this end, we acquired diffusion tensor imaging data from 28 individuals aged 18 to 86 years and quantified the number of fibers, voxels, and fractional anisotropy of the two major tracts that pass through the fusiform gyrus, the pre-eminent face processing region in the ventral temporal cortex. We also measured the ability of a subset of these individuals to make fine-grained discriminations between pairs of faces and between pairs of cars. There was a significant reduction in the structural integrity of the inferior fronto-occipital fasciculus (IFOF) in the right hemisphere as a function of age on all dependent measures and there were also some changes in the left hemisphere, albeit to a lesser extent. There was also a clear age-related decrement in accuracy of perceptual discrimination, especially for more challenging perceptual discriminations, and this held to a greater degree for faces than for cars. Of greatest relevance, there was a robust association between the reduction of IFOF integrity in the right hemisphere and the decline in face perception, suggesting that the alteration in structural connectivity between the right ventral temporal and frontal cortices may account for the age-related difficulties in face processing.

scholarly journals Dynamic interhemispheric coordination in face processing

2017 ◽  
Author(s):  
Zhengang Lu ◽  
Bingbing Guo ◽  
Ming Meng
Keyword(s):  
Left Hemisphere ◽  
Phase Difference ◽  
Face Processing ◽  
Right Hemisphere ◽  
Conscious Experience ◽  
Visual Fields ◽  
Time Resolved ◽  
Face Area ◽  
Starting Point ◽  
Left And Right

AbstractOur conscious experience of the world is normally unified. The brain coordinates different processes from the left and right hemispheres into one experience. However, the neural mechanisms underlying interhemispheric coordination remain poorly understood. A mechanistic approach to understanding interhemispheric coordination is “communication through coherence” (Fries, 2005; 2015). Using a recently developed time-resolved psychophysics (Fiebelkorn, Saalmann, & Kastner, 2013; Landau & Fries, 2012; Song, Meng, Chen, Zhou, & Luo, 2014), combined with fMRI decoding method, we investigated the interhemispheric coordination through coherence, by focusing on a quintessential case of hemispheric lateralized brain function: face processing in the left and right fusiform face area (FFA). We observed coherent oscillatory fMRI multi-voxel patterns in the left and right FFA when two stimuli presented successively cross visual fields, either initiating coordination from the left hemisphere or right hemisphere. When interhemispheric coordination started from the dominant right hemisphere, a coherent 44° phase difference between the left and right FFA in 3-4 Hz was observed; whereas when interhemispheric coordination started from the non-dominant left hemisphere, a coherent −17° phase difference between the left and right FFA in 5.5-6.5 Hz was observed. These results suggest that different phase coherence might mediate the interhemispheric coordination of face perception, depending on whether the initiating hemisphere is dominant or non-dominant. Our findings provide compelling fMRI evidence for interhemispheric coordination through coherence. The time-resolved fMRI decoding approach would be a useful starting point for a more promising approach for future investigation in interhemispheric dynamic coordination with fine-grained spatial and temporal resolution.

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