Spatial scale contribution to early visual differences between face and object processing

Goffaux, Valérie; Gauthier, Isabel; Rossion, Bruno

doi:10.1016/s0926-6410(03)00056-9

Cited by 183 publications

(155 citation statements)

References 33 publications

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“…It should be noted that just like the N170, the VPP component triggered at midline electrodes was also not significantly affected by spatial frequency content, which is in line with the assumption that N170 and VPP are generated by common brain processes. 2 Our finding that the N170 is unaffected by the spatial frequency content of faces is at odds with the results from another recent ERP study [33], where a face-specific N170 was found only with LSF, but not with HSF, stimuli. There are several possible reasons for this discrepancy, including differences in the type of non-face stimuli employed, and the presence versus absence of a textured background.…”

Section: Discussioncontrasting

confidence: 83%

“…There are several possible reasons for this discrepancy, including differences in the type of non-face stimuli employed, and the presence versus absence of a textured background. Whereas the overall power spectra were balanced in the Goffaux et al study [33], they were not balanced in our own study. This is because we equalised the (RMS) contrast energy of the images, thereby circumventing one of the main problems with frequency filtering of natural stimuli, which is that contrast (power) is conflated with spatial frequency because the power of the image is concentrated at the low spatial frequencies.…”

Section: Discussioncontrasting

confidence: 70%

“…Differences between the studies in the low-pass and high-pass filter settings used to create LSF and HSF stimuli might account for the discrepancies between results. The fact that Goffaux et al [33] failed to obtain a reliable face-specific N170 component in response to HSF stimuli containing frequencies above 32 cycles per image (6.5 cycles per degree of visual angle), while this component was clearly present in the current study for HSF stimuli with frequencies above 26 cycles per image (4 cycles per degree of visual angle), might point to a relatively more important role of spatial frequencies falling within the range of 26 and 32 cycles per image (4 and 6 cycles per degree of visual angle) for structural face processing.…”

Section: Discussionmentioning

confidence: 99%

“…One recent study [33] has found enhanced N170 amplitudes for faces relative to non-face objects with LSF, but not HSF stimuli, suggesting that face processing might depend primarily on LSF information. We investigated this issue by measuring the N170 as elicited by faces relative to houses, separately for BSF, LSF, and HSF stimuli.…”

Section: Introductionmentioning

confidence: 96%

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The role of spatial frequency information for ERP components sensitive to faces and emotional facial expression

Holmes

Winston

Eimer

2005

Cognitive Brain Research

119

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(2005). The role of spatial frequency information for ERP components sensitive to faces and emotional facial expression. Cognitive Brain Research 25 (2): 508-520. This is an author-produced version of a paper published in Cognitive BrainResearch . This version has been peer-reviewed, but it does not include the final publisher proof corrections, published layout or pagination. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any component of this work in other works, must be obtained from the copyright holder. Copyright © 2005 Elsevier B. V. All rights reserved.All articles available through Birkbeck ePrints are protected by intellectual property law, including copyright law. Any use made of the contents should comply with the relevant law. ABSTRACTTo investigate the impact of spatial frequency on emotional facial expression analysis, ERPs were recorded in response to low spatial frequency (LSF), high spatial frequency (HSF), and unfiltered broad spatial frequency (BSF) faces with fearful or neutral expressions, houses, and chairs. In line with previous findings, BSF fearful facial expressions elicited a greater frontal positivity than BSF neutral facial expressions, starting at about 150 ms after stimulus onset. In contrast, this emotional expression effect was absent for HSF and LSF faces. Given that some brain regions involved in emotion processing, such as amygdala and connected structures, are selectively tuned to LSF visual inputs, these data suggest that ERP effects of emotional facial expression do not directly reflect activity in these regions. It is argued that higher order neocortical brain systems are involved in the generation of emotion-specific waveform modulations. The face-sensitive N170 component was neither affected by emotional facial expression nor by spatial frequency information.Theme: Neural Basis of Behaviour Topic: Cognition

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Section: Discussioncontrasting

confidence: 83%

Section: Discussioncontrasting

confidence: 70%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

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The role of spatial frequency information for ERP components sensitive to faces and emotional facial expression

Holmes

Winston

Eimer

2005

Cognitive Brain Research

119

View full text Add to dashboard Cite

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“…Can the N170 and VPP be dissociated based on their different responses to different experimental manipulations? Since the N170 and VPP showed remarkable functional similarity to various manipulations of faces (Goffaux, Gauthier, & Rossion, 2003;Itier & Taylor, 2002;Jemel et al, 2003;Rossion et al, 1999a;Rossion et al, 1999b), Joyce and Rossion (2005) claimed that the N170 and VPP represented the same underlying generators (also see Rossion & Jacques, 2008 for a review).…”

Section: Relationship Between the N170 And Vppmentioning

confidence: 99%

Effects of symbol type and numerical distance on the human event-related potential

Jiang

Qiao

et al. 2010

Neuropsychologia

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a b s t r a c tThis study investigated the influence of the symbol type and numerical distance of numbers on the amplitudes and peak latencies of event-related potentials (ERPs). Our aim was to (1) determine the point in time of magnitude information access in visual number processing; and (2) identify at what stage the advantage of Arabic digits over Chinese verbal numbers occur. ERPs were recorded from 64 scalp sites while subjects (n = 26) performed a classification task. Results showed that larger ERP amplitudes were elicited by numbers with distance-close condition in comparison to distance-far condition in the VPP component over centro-frontal sites. Furthermore, the VPP latency varied as a function of the symbol type, but the N170 did not. Such results demonstrate that magnitude information access takes place as early as 150 ms after onset of visual number stimuli and the advantage of Arabic digits over verbal numbers should be localized to the VPP component. We establish the VPP component as a critical ERP component to report in studies of numerical cognition and our results call into question the N170/VPP association hypothesis and the serial-stage model of visual number comparison processing.

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Enhanced extrastriate visual response to bandpass spatial frequency filtered fearful faces: Time course and topographic evoked‐potentials mapping

Pourtois

Dan

Grandjean

et al. 2005

Human Brain Mapping

273

236

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Abstract:We compared electrical brain responses to fearful vs. neutral facial expressions in healthy volunteers while they performed an orthogonal gender decision task. Face stimuli either had a broadband spatial-frequency content, or were filtered to create either low spatial-frequency (LSF) or high spatialfrequency (HSF) faces, always overlapped with their complementary SF content in upside-down orientation to preserve the total stimulus energy. We tested the hypothesis that the coarse LSF content of faces might be responsible for an early modulation of event-related potentials (ERPs) to fearful expressions. Consistent with previous findings, we show that broadband images of fearful faces, relative to neutral faces, elicit a higher global field power of approximately 130 ms poststimulus onset, corresponding to an increased P1 component over lateral occipital electrodes, with neural sources located within the extrastriate visual cortex. Bandpass filtering of faces strongly affected the latency and amplitude of ERPs, with a suppression of the normal N170 response for both LSF and HSF faces, irrespective of expression. Critically, we found that LSF information from fearful faces, unlike HSF information, produced a right-lateralized enhancement of the lateral occipital P1, without any change in the scalp topography, relative to unfiltered (broadband) fearful faces. These results demonstrate that an early P1 response to fear expression depends on a visual pathway preferentially tuned to coarse-magnocellular inputs, and can persist unchanged even when the N170 generators are disrupted by SF filtering. Hum Brain Mapp 26:65-79, 2005.

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Spatial scale contribution to early visual differences between face and object processing

Cited by 183 publications

References 33 publications

The role of spatial frequency information for ERP components sensitive to faces and emotional facial expression

The role of spatial frequency information for ERP components sensitive to faces and emotional facial expression

Effects of symbol type and numerical distance on the human event-related potential

Enhanced extrastriate visual response to bandpass spatial frequency filtered fearful faces: Time course and topographic evoked‐potentials mapping

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