Event-related potentials from a visual categorization task

Antal, Andrea; Kéri, Szabolcs; Kovács, Gyula; Liszli, Péter; Janka, Zoltán; Benedek, György

doi:10.1016/s1385-299x(01)00055-1

Cited by 19 publications

(13 citation statements)

References 14 publications

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“…On the other hand, the larger frontal/central N1 (130–160) (and subsequent anterior temporal N2) in response to artifacts than animals is consistent with the data by Antal and colleagues [26,27] who found a greater N1 to non-animals (natural and urban scenes, objects, flowers, fruits) than animals at frontal sites (F3, F4, Fz, Cz) in a visual categorization task.…”

Section: Resultssupporting

confidence: 90%

The emergence of semantic categorization in early visual processing: ERP indices of animal vs. artifact recognition

2007

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BackgroundNeuroimaging and neuropsychological literature show functional dissociations in brain activity during processing of stimuli belonging to different semantic categories (e.g., animals, tools, faces, places), but little information is available about the time course of object perceptual categorization. The aim of the study was to provide information about the timing of processing stimuli from different semantic domains, without using verbal or naming paradigms, in order to observe the emergence of non-linguistic conceptual knowledge in the ventral stream visual pathway. Event related potentials (ERPs) were recorded in 18 healthy right-handed individuals as they performed a perceptual categorization task on 672 pairs of images of animals and man-made objects (i.e., artifacts).ResultsBehavioral responses to animal stimuli were ~50 ms faster and more accurate than those to artifacts. At early processing stages (120–180 ms) the right occipital-temporal cortex was more activated in response to animals than to artifacts as indexed by posterior N1 response, while frontal/central N1 (130–160) showed the opposite pattern. In the next processing stage (200–260) the response was stronger to artifacts and usable items at anterior temporal sites. The P300 component was smaller, and the central/parietal N400 component was larger to artifacts than to animals.ConclusionThe effect of animal and artifact categorization emerged at ~150 ms over the right occipital-temporal area as a stronger response of the ventral stream to animate, homomorphic, entities with faces and legs. The larger frontal/central N1 and the subsequent temporal activation for inanimate objects might reflect the prevalence of a functional rather than perceptual representation of manipulable tools compared to animals. Late ERP effects might reflect semantic integration and cognitive updating processes. Overall, the data are compatible with a modality-specific semantic memory account, in which sensory and action-related semantic features are represented in modality-specific brain areas.

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Section: Resultssupporting

confidence: 90%

The emergence of semantic categorization in early visual processing: ERP indices of animal vs. artifact recognition

2007

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“…Interestingly, we found the same effect of discordance on both frontal and temporal sites where the enhancement for low affording/high attractive compared to high affording/high attractive tools was more evident on the left side. The modulation of the frontal and posterior N100 response to artifacts is consistent with previous studies that compared the effect of animals and artifacts in visual categorization (Antal et al, 2000(Antal et al, , 2001Proverbio et al, 2007). Furthermore, our posterior N100, peaking around 200 ms, resembles the negative deflection over occipito-temporal areas (N200 or N150) reflecting selective attention effects in target decision tasks using animals (Codispoti et al, 2006;Johnson and Olshausen, 2003) and objects (Van Rullen and Thorpe, 2001).…”

Section: Discussionsupporting

confidence: 90%

“…2), scalp topographies (Fig. 3), and based on previous ERP studies on visual attention (N100 - Vogel and Luck, 2000;Carretie et al, 2003) and object recognition (P200 -Paz- Caballero et al, 2011;Antal et al, 2001;Schendan and Lucia, 2009), affordance (P200, N300 - Petit et al, 2006;Proverbio et al, 2007Proverbio et al, , 2011, and esthetics (N300, P300, LPP and Late Frontal Positivity -de Tommaso et al, 2008;Jacobsen and Höfel, 2003;Höfel et al, 2007). The electrodes included in the analysis were: F3, FZ, F4, FC3, FCZ, FC4, C3, CZ, C4, CP3, CPZ, CP4, P3, PZ, P4, T5, T6.…”

Section: Electrophysiological Recordingmentioning

confidence: 99%

Attractiveness and affordance shape tools neural coding: Insight from ERPs

Righi

Orlando

Marzi

2014

International Journal of Psychophysiology

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. The relation between attractiveness and motor affordance is a key topic in design and has not yet been investigated electrophysiologically. In this respect, action affordance and attractiveness represent two crucial dimensions in object processing (specifically for tools). In light of this evidence, Event Related Potentials (ERPs) enabled us to gain new insights into the time course of the interaction between these two dimensions during an explicit tool evaluation task. Behaviorally, tools that were judged as high affording and high attractive yielded faster response times than those judged as low affording and low attractive. The ERP results showed that early processes related to sensory gating and feature extraction (N100) were sensitive to both affordance and attractiveness; the P200 was dominated by affordance, indexing a facilitated access to motor action representation. The N300, P300 and the Late Positive Potential (LPP) showed enhanced responses for highly affording/attractive tools, reflecting the interconnection between attractiveness and affordance. Later responses were entirely affected by attractiveness, suggesting additional affective responses evoked by desirable tools. We are showing that things that are perceived as more functional and attractive have a privileged neural activation in the time course of tool evaluation, for the first time.

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“…We focused on the P2 component for the following reasons. First, P2 was related to attention and categorization around 150–300 ms post-stimulus onset (Antal et al, 2001; Crowley and Colrain, 2004). Second, a plethora of research has found that emotional effect takes place in the P2 time-window in visible conditions (Begleiter and Platz, 1969; Begleiter et al, 1979; Williamson et al, 1991; Schapkin et al, 2000; Ortigue et al, 2004; Kanske and Kotz, 2007; Wang and Bastiaansen, 2014).…”

Section: Introductionmentioning

confidence: 99%

Automatic Processing of Emotional Words in the Absence of Awareness: The Critical Role of P2

et al. 2017

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It has been long debated to what extent emotional words can be processed in the absence of awareness. Behavioral studies have shown that the meaning of emotional words can be accessed even without any awareness. However, functional magnetic resonance imaging studies have revealed that emotional words that are unconsciously presented do not activate the brain regions involved in semantic or emotional processing. To clarify this point, we used continuous flash suppression (CFS) and event-related potential (ERP) techniques to distinguish between semantic and emotional processing. In CFS, we successively flashed some Mondrian-style images into one participant's eye steadily, which suppressed the images projected to the other eye. Negative, neutral, and scrambled words were presented to 16 healthy participants for 500 ms. Whenever the participants saw the stimuli—in both visible and invisible conditions—they pressed specific keyboard buttons. Behavioral data revealed that there was no difference in reaction time to negative words and to neutral words in the invisible condition, although negative words were processed faster than neutral words in the visible condition. The ERP results showed that negative words elicited a larger P2 amplitude in the invisible condition than in the visible condition. The P2 component was enhanced for the neutral words compared with the scrambled words in the visible condition; however, the scrambled words elicited larger P2 amplitudes than the neutral words in the invisible condition. These results suggest that the emotional processing of words is more sensitive than semantic processing in the conscious condition. Semantic processing was found to be attenuated in the absence of awareness. Our findings indicate that P2 plays an important role in the unconscious processing of emotional words, which highlights the fact that emotional processing may be automatic and prioritized compared with semantic processing in the absence of awareness.

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Event-related potentials from a visual categorization task

Cited by 19 publications

References 14 publications

The emergence of semantic categorization in early visual processing: ERP indices of animal vs. artifact recognition

The emergence of semantic categorization in early visual processing: ERP indices of animal vs. artifact recognition

Attractiveness and affordance shape tools neural coding: Insight from ERPs

Automatic Processing of Emotional Words in the Absence of Awareness: The Critical Role of P2

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