Holistic processing for left–right composite faces in Chinese and Caucasian observers

Tt, Liu; Hayward, William G.; Oxner, Matt; Behrmann, Marlene

doi:10.1080/13506285.2014.944613

Cited by 4 publications

(7 citation statements)

References 56 publications

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“…While we were surprised by the absence of hemispheric modulation in the controls (see Liu et al, in press) given how closely this paradigm mirrors the known chimeric face result, of interest here is that the CPs, too, show no hemispheric modulation.…”

Section: Discussionmentioning

confidence: 56%

“…Based on our predictions, we expect to observe a difference in the magnitude of HP (i.e., interaction between alignment and congruency) in controls and in CPs. Using this exact paradigm, we have previously obtained evidence for a composite effect in control participants (Liu et al, in press ) and, as such, have verified the efficacy of the vertical composite task for uncovering HP. We note that in the controls, there was no modulation of the HP by hemisphere as we might have predicted given the evidence for greater RH involvement in HP.…”

Section: The Current Studymentioning

confidence: 55%

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Impaired holistic processing of left-right composite faces in congenital prosopagnosia

Behrmann

2014

Front. Hum. Neurosci.

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Congenital prosopagnosia (CP) refers to a lifelong impairment in face processing despite normal visual and intellectual skills. Many studies have suggested that the key underlying deficit in CP is one of a failure to engage holistic processing. Moreover, there has been some suggestion that, in normal observers, there may be greater involvement of the right than left hemisphere in holistic processing. To examine the proposed deficit in holistic processing and its potential hemispheric atypicality in CP, we compared the performance of 8 CP individuals with both matched controls and a large group of non-matched controls on a novel, vertical composite task. In this task, participants judged whether a cued half of a face (either left or right half) was the same or different at study and test, and the two face halves could be either aligned or misaligned. The standard index of holistic processing is one in which the unattended face half influences performance on the cued half and this influence is greater in the aligned than in the misaligned condition. Relative to controls, the CP participants, both at a group and at an individual level, did not show holistic processing in the vertical composite task. There was also no difference in performance as a function of hemifield of the cued face half in the CP individuals, and this was true in the control participants, as well. The findings clearly confirm the deficit in holistic processing in CP and reveal the useful application of this novel experimental paradigm to this population and potentially to others as well.

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Section: Discussionmentioning

confidence: 56%

Section: The Current Studymentioning

confidence: 55%

Impaired holistic processing of left-right composite faces in congenital prosopagnosia

Behrmann

2014

Front. Hum. Neurosci.

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“…It is plausible that the presence of an upright LVF half-face biases this competition by allocating face-processing resources to the LVF at the expense of RVF face processing, even though equivalent half-face processing is possible for the RVF half of a face when viewed alone. A study by Liu, Hayward, Oxner, and Behrmann (2014) found equivalent holistic processing effects for LVF and RVF halves of centrally viewed faces. Their results are consistent with ours from Experiments 2b and 3, for which we observed no differences in recognition performance, but the equivalent LVF and RVF holistic processing they observed contrasts with our finding of an LVF advantage for centrally viewed upright whole faces.…”

Section: Lvf Half-face Prioritizationmentioning

confidence: 95%

“…Despite the plausibility of RH superiority for face processing as an explanation for the LVF half-face advantage, existing findings show that the advantage does not always occur and that RH superiority itself may not suffice to explain the advantage. For instance, the results of experiments by Liu, Hayward, Oxner, and Behrmann (2014) found that LVF and RVF half-faces can be processed equally well for recognition purposes when cued. This means that, under some conditions, the LH can processes RVF half-faces as well as the RH processes LVF half-faces, unless LVF-RH/ RVF-LH logic does not apply.…”

Section: Introductionmentioning

confidence: 99%

Does right hemisphere superiority sufficiently explain the left visual field advantage in face recognition?

Harrison

Strother

2019

Atten Percept Psychophys

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The tendency to perceive the identity of the left half of a centrally viewed face more strongly than that of the right half is associated with visual processing of faces in the right hemisphere (RH). Here we investigate conditions under which this wellknown left visual field (LVF) half-face advantage fails to occur. Our findings challenge the sufficiency of its explanation as a function of RH specialization for face processing coupled with LVF-RH correspondence. In two experiments we show that the LVF half-face advantage occurs for normal faces and chimeric faces composed of different half-face identities. In a third experiment, we show that face inversion disrupts the LVF half-face advantage. In two additional experiments we show that half-faces viewed in isolation or paired with inverted half-faces fail to show the LVF advantage. Consistent with previous explanations of the LVF half-face advantage, our findings suggest that the LVF half-face advantage reflects RH superiority for processing faces and direct transfer of LVF face information to visual cortex in the RH. Critically, however, our findings also suggest the operation of a third factor, which involves the prioritization of face-processing resources to the LVF, but only when two upright face-halves compete for these resources. We therefore conclude that RH superiority alone does not suffice to explain the LVF advantage in face recognition. We also discuss the implications of our findings for specialized visual processing of faces by the right hemisphere, and we distinguish LVF advantages for faces viewed centrally and peripherally in divided field studies.

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“…This could potentially be a problem, since a significant Congruency 3 Alignment interaction in d 0 could be solely due to a significant facilitation effect, without the interference effect from ''same'' trials. This has proven to be the case in some studies (Horry et al, 2015;Liu, Hayward, Oxner, & Behrmann, 2014) but unfortunately hampers an adequate interpretation of the results. Although we will not elaborate on the reason we think some researchers find only a facilitation effect, we believe that in the future, interpretation on the basis of d 0 should be made with caution; preferably, ''same'' and ''different'' trials should be analyzed separately, in accordance with the standard design.…”

Section: Alternative Versus Standard Designmentioning

confidence: 99%

Holistic integration of gaze cues in visual face and body perception: Evidence from the composite design

2017

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A considerable amount of research on identity recognition and emotion identification with the composite design points to the holistic processing of these aspects in faces and bodies. In this paradigm, the interference from a nonattended face half on the perception of the attended half is taken as evidence for holistic processing (i.e., a composite effect). Far less research, however, has been dedicated to the concept of gaze. Nonetheless, gaze perception is a substantial component of face and body perception, and holds critical information for everyday communicative interactions. Furthermore, the ability of human observers to detect direct versus averted eye gaze is effortless, perhaps similar to identity perception and emotion recognition. However, the hypothesis of holistic perception of eye gaze has never been tested directly. Research on gaze perception with the composite design could facilitate further systematic comparison with other aspects of face and body perception that have been investigated using the composite design (i.e., identity and emotion). In the present research, a composite design was administered to assess holistic processing of gaze cues in faces (Experiment 1) and bodies (Experiment 2). Results confirmed that eye and head orientation (Experiment 1A) and head and body orientation (Experiment 2A) are integrated in a holistic manner. However, the composite effect was not completely disrupted by inversion (Experiments 1B and 2B), a finding that will be discussed together with implications for future research.

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Holistic processing for left–right composite faces in Chinese and Caucasian observers

Cited by 4 publications

References 56 publications

Impaired holistic processing of left-right composite faces in congenital prosopagnosia

Impaired holistic processing of left-right composite faces in congenital prosopagnosia

Does right hemisphere superiority sufficiently explain the left visual field advantage in face recognition?

Holistic integration of gaze cues in visual face and body perception: Evidence from the composite design

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