10 Artikel zum Thema EPN

8/10/2019 10 Artikel zum Thema EPN

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The selective processing of briefly presented affective pictures: An ERP analysis

By:Schupp, HT (Schupp, HT); Junghofer, M (Junghofer, M); Weike, AI (Weike, AI); Hamm,AO (Hamm, AO)

PSYCHOPHYSIOLOGY

Volume: 41

Issue: 3

Pages: 441-449

DOI: 10.1111/j.1469-8986.2004.00174.x

Published: MAY 2004

View Journal InformationAbstract

Recent event-related potential (ERP) studies revealed the selective processing of affectivepictures. The present study explored whether the same phenomenon can be observed whenpictures are presented only briefly. Toward this end. pleasant, neutral, and unpleasantpictures from the International Affective Pictures Series were presented for 120 ins whileevent related potentials were measured by dense sensor arrays. As observed for longerpicture presentations, brief affective pictures were selectively processed, Specifically,pleasant and unpleasant pictures were associated with an early endogenous negative shiftover temporo-occipital sensors compared to neutral images. In addition, affective pictureselicited enlarged late positive potentials over centro-parietal sensor sites relative to neutral

images. These data suggest that a quick glimpse of emotionally relevant stimuli appearssufficient to tune the brain for selective perceptual processing.

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Emotion and attention: event-related brain potential studies

By:Schupp, HT (Schupp, Harald T.); Flaisch, T (Flaisch, Tobias); Stockburger, J(Stockburger, Jessica); Junghofer, M (Junghoefer, Markus)

Edited by:Anders, S; Ende, G; Junghoffer, M; Kissler, J; Wildgruber, D

UNDERSTANDING EMOTIONS

Book Series: PROGRESS IN BRAIN RESEARCH

Volume: 156

Pages: 31-51

DOI: 10.1016/S0079-6123(06)56002-9

Published: 2006



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Emotional pictures guide selective visual attention. A series of event-related brain potential(ERP) studies is reviewed demonstrating the consistent and robust modulation of specificERP components by emotional images. Specifically, pictures depicting natural pleasant andunpleasant scenes are associated with an increased early posterior negativity, late positivepotential, and sustained positive slow wave compared with neutral contents. Thesemodulations are considered to index different stages of stimulus processing includingperceptual encoding, stimulus representation in working memory, and elaborate stimulusevaluation. Furthermore, the review includes a discussion of studies exploring the interactionof motivated attention with passive and active forms of attentional control. Recent research isreviewed exploring the selective processing of emotional cues as a function of stimulusnovelty, emotional prime pictures, learned stimulus significance, and in the context of explicitattention tasks. It is concluded that ERP measures are useful to assess the emotion-attentioninterface at the level of distinct processing stages. Results are discussed within the contextof two-stage models of stimulus perception brought out by studies of attention, orienting, andlearning.

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Attention and emotion: an ERP analysis of facilitated emotional stimulus processing

By:Schupp, HT (Schupp, HT); Junghofer, M (Junghofer, M); Weike, AI (Weike, AI); Hamm,AO (Hamm, AO)

NEUROREPORT

Volume: 14

Issue: 8

Pages: 1107-1110

DOI: 10.1097/01.wnr.0000075416.59944.49

Published: JUN 11 2003


Recent event-related potential studies observed an early posterior negativity (EPN) reflecting

facilitated processing of emotional images. The present study explored if the facilitatedprocessing of emotional pictures is sustained while subjects perform an explicit non-emotional attention task. EEG was recorded from 129 channels while subjects viewed arapid continuous stream of images containing emotional pictures as well as task-relatedcheckerboard images. As expected, explicit selective attention to target images elicited largeP3 waves. Interestingly, emotional stimuli guided stimulus-driven selective encoding asreflected by augmented EPN amplitudes to emotional stimuli, in particular to stimuli ofevolutionary significance (erotic contents, mutilations, and threat). These data demonstratethe selective encoding of emotional stimuli while top-down attentional control was directedtowards non-emotional target stimuli.

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Arousal modulates valence effects on both early and late stages of affective picture


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processing in a passive viewing task.

By:Feng, Chunliang; Li, Wanqing; Tian, Tengxiang; Luo, Yi; Gu, Ruolei; Zhou, Chenglin; Luo,Yue-Jia

Social neuroscience

Volume:9

Issue:4

Pages:364-77

DOI:10.1080/17470919.2014.896827

Published:2014-Aug (Epub 2014 Mar 07)Abstract

Valence and arousal are primary dimensions of affective stimuli. An interaction of these twofactors on affective processing is largely unknown. In this study, the processing of affectivepictures was investigated in an orthogonal valence (positive vs. negative) by arousal (highvs. low) task design. Participants were instructed to passively view each presented pictureand did not need to make any responses. The valence by arousal interaction was observedon three event-related potential (ERP) components, including the P2 (160-190ms), N2 (220-320ms) and late positive potential (LPP) (400-700ms). This interaction revealed that negativepictures evoked larger neural responses compared with positive pictures (i.e., negative bias)at the high-arousal level, whereas negative pictures evoked smaller neural responses thanpositive pictures (i.e., positive offset) at the low-arousal level. The current results suggestthat the effect of emotional valence on affective picture perception is modulated by levels of

arousal at both early and late stages of processing. Finally, the main effect of valence wasevident in the P1 component (90-110ms) and arousal effect in the N1 component (120-150ms).

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Fleeting images: A new look at early emotion discrimination

By:Junghofer, M (Junghofer, M); Bradley, MM (Bradley, MM); Elbert, TR (Elbert, TR); Lang,PJ (Lang, PJ)

PSYCHOPHYSIOLOGY

Volume: 38

Issue: 2

Pages: 175-178

DOI: 10.1017/S0048577201000762

Published: MAR 2001



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The visual brain quickly sorted stimuli for emotional impact despite high-speed presentation(3 or 5 per s) in a sustained, serial torrent of 700 complex pictures. Event-related potentials,recorded with a dense electrode array, showed selective discrimination of emotionallyarousing stimuli from less affective content. Primary sources of this activation were over theoccipital cortices, extending to right parietal cortex: suggesting a processing focus in theposterior visual system. Emotion discrimination was independent of formal pictorialproperties (color, brightness, spatial frequency, and com plexity). The data support thehypothesis of a very short-term conceptual memory store (M. C. Potter, 1999)-shown here toinclude a fleeting but reliable assessment of affective meaning

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Affective picture processing: The late positive potential is modulated by motivationalrelevance

By:Schupp, HT (Schupp, HT); Cuthbert, BN (Cuthbert, BN); Bradley, MM (Bradley, MM);

Cacioppo, JT (Cacioppo, JT); Ito, T (Ito, T); Lang, PJ (Lang, PJ)

PSYCHOPHYSIOLOGY

Volume: 37

Issue: 2

Pages: 257-261

DOI: 10.1017/S0048577200001530

Published: MAR 2000


Recent studies have shown that the late positive component of the event-related-potential(ERP) is enhanced for emotional pictures, presented in an oddball paradigm, evaluated asdistant from an established affective context. In other research, with context-free, randompresentation, affectively intense pictures (pleasant and unpleasant) prompted similarenhanced ERP late positivity (compared with the neutral picture response). In an effort toreconcile interpretations of the late positive potential (LPP), ERPs to randomly orderedpictures were assessed, but using the faster presentation rate, brief exposure (1.5 s), and

distinct sequences of six pictures, as in studies using an oddball based on evaluativedistance. Again, results showed larger LPPs to pleasant and unpleasant pictures, comparedwith neutral pictures. Furthermore, affective pictures of high arousal elicited larger LPPs thanless affectively intense pictures. The data support the view that late positivity to affectivepictures is modulated both by their intrinsic motivational significance and the evaluativecontext of picture presentation.

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Rapid emotional face processing in the human right and left brain hemispheres: an ERPstudy

By:Pizzagalli, D (Pizzagalli, D); Regard, M (Regard, M); Lehmann, D (Lehmann, D)


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NEUROREPORT

Volume: 10

Issue: 13

Pages: 2691-2698

DOI: 10.1097/00001756-199909090-00001

Published: SEP 9 1999


IMAGING work has begun to elucidate the spatial organization of emotions; the temporalorganization, however, remains unclear. Adaptive behavior relies on rapid monitoring of

potentially salient cues (typically with high emotional value) in the environment. To clarify thetiming and speed of emotional processing in the two human brain hemispheres, event-related potentials (ERPs) were recorded during hemifield presentation of face images. ERPswere separately computed for disliked and liked faces, as individually assessed by post-recording affective ratings. After stimulation of either hemisphere, personal affectivejudgements of face images significantly modulated ERP responses at early stages, 80-116ms after right hemisphere and 104-106 ms ms after left hemisphere stimulation. This is thefirst electrophysiological evidence for valence-dependent, automatic, ie. pre-attentiveemotional processing in humans. (C) 1999 Lippincott Williams & Wilkins.

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Affective picture processing as a function of preceding picture valence: An ERP analysis

By:Schupp, HT (Schupp, Harald T.)[ 1 ] ; Schmalzle, R (Schmaelzle, Ralf); Flaisch, T(Flaisch, Tobias); Weike, AI (Weike, Almut I.)[ 2 ] ; Hamm, AO (Hamm, Alfons O.)[ 2 ]

BIOLOGICAL PSYCHOLOGY

Volume: 91

Issue: 1

Pages: 81-87

DOI: 10.1016/j.biopsycho.2012.04.006

Published: SEP 2012


Event-related brain potential (ERP) studies consistently revealed that a relatively early (earlyposterior negativity; EPN) and a late (late positive potential; LPP) ERP componentdifferentiate between emotional and neutral picture stimuli. Two studies examined theprocessing of emotional stimuli when preceded either by pleasant, neutral, or unpleasantcontext images. In both studies, distinct streams of six pictures were shown. In Study 1,hedonic context was alternated randomly across the 180 picture streams. In Study 2,


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hedonic context sequences were blocked, resulting in 60 preceding sequences of pleasant,neutral, and unpleasant context valence, respectively. The main finding was that the valenceof the preceding picture sequence had no significant effect on the emotional modulation ofthe EPN and LPP components. However, previous results were replicated in that emotionalstimulus processing was associated with larger EPN and LPP components as compared toneutral pictures. These findings suggest that the prioritized processing of emotional stimuli isprimarily driven by the valence of the current picture. (C) 2012 Elsevier B.V. All rightsreserved.

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Affective picture processing: An integrative review of ERP findings

By:Olofsson, JK (Olofsson, Jonas K.)[ 1 ] ; Nordin, S (Nordin, Steven)[ 1 ] ; Sequeira, H(Sequeira, Henrique)[ 2 ] ; Polich, J (Polich, John)[ 3 ]

BIOLOGICAL PSYCHOLOGY

Volume: 77

Issue: 3

Pages: 247-265

DOI: 10.1016/j.biopsycho.2007.11.006

Published: MAR 2008


The review summarizes and integrates findings from 40 years of event-related potential(ERP) studies using pictures that differ in valence (unpleasant-to-pleasant) and arousal (low-to-high) and that are used to elicit emotional processing. Affective stimulus factors primarilymodulate ERP component amplitude, with little change in peak latency observed. Arousaleffects are consistently obtained, and generally occur at longer latencies. Valence effects areinconsistently reported at several latency ranges, including very early components. Someaffective ERP modulations vary with recording methodology, stimulus factors, as well astask-relevance and emotional state. Affective ERPs have been linked theoretically toattention orientation for unpleasant pictures at earlier components (300 ms). Theoretical issues, stimulus factors, taskdemands, and individual differences are discussed. (C) 2007 Elsevier B.V. All rightsreserved.

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Differentiating neural responses to emotional pictures: Evidence from temporal-spatial PCA

By:Foti, D (Foti, Dan)[ 1 ] ; Hajcak, G (Hajcak, Greg)[ 1 ] ; Dien, J (Dien, Joseph)[ 2 ]

PSYCHOPHYSIOLOGY


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Volume: 46

Issue: 3

Pages: 521-530

DOI: 10.1111/j.1469-8986.2009.00796.x

Published: MAY 2009


Consistent with the notion that emotional stimuli receive preferential attention and perceptualprocessing, many event-related potential (ERP) components appear sensitive to emotionalstimuli. In an effort to differentiate components that are sensitive to emotional versus neutralstimuli, the current study utilized temporospatial principal components analysis to analyze

ERPs from a large sample (N=82) while pleasant, neutral, and unpleasant images werepassively viewed. Several factors sensitive to emotional stimuli were identified-correspondingto the N1, early posterior negativity (EPN), and P3; multiple factors resembling the latepositive potential (LPP) emerged. Results indicate that the N1 represents the earliestcomponent modulated by emotional stimuli; the EPN and the LPP represent uniquecomponents; the scalp-recorded LPP appears to include a P3-like positivity as well asadditional positivities at occipital and central recording sites.

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10 Artikel zum Thema EPN