Affective valence and P300 when stimulus arousal level is controlled

Conroy, Matthew A.; Polich, John

doi:10.1080/02699930600926752

Cited by 75 publications

(69 citation statements)

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“…Hence, emotional arousal may amplify activity in cortical structures that are normally engaged for target processing (Polich, 2007;Sabatinelli et al, 2007). When arousal level across stimuli is well controlled valence can modulate P300 from frontal sites (Cano et al, 2007;Conroy and Polich, 2007;Delplanque et al, 2005Delplanque et al, , 2006, although it is unclear whether these effects consistently obtain when both factors are manipulated within the same session . Despite evidence for ERP modulations from picture valence and arousal (Delplanque et al, 2004(Delplanque et al, , 2006Schupp et al, 2006), these fundamental affective factors are not typically varied systematically.…”

Section: Erps From Affective Picture Stimulimentioning

confidence: 99%

Affective visual event-related potentials: Arousal, valence, and repetition effects for normal and distorted pictures

Rozenkrants

Olofsson

Polich

2007

International Journal of Psychophysiology

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Event-related potentials (ERPs) were used to assess arousal (low, high), valence (negative, positive), and stimulus repetition effects for normal and distorted images from the International Affective Pictures System (IAPS). Distorted stimuli were constructed by dividing each image into 108 one cm squares and rearranging the segments randomly to produce a "scrambled" picture. Event-related potentials (ERPs) were elicited by presenting the normal and scrambled images as target stimuli, with a repeated visual pattern used as the standard stimulus. Participants (N=32) were instructed to press a button to the targets and ignore the standard. Stimulus repetition effects were assessed by presenting each stimulus twice in the normal and scrambled condition. High arousal stimuli yielded larger late positive components for both the normal and scrambled pictures. No overall valence effects were obtained, but arousal and valence influenced component amplitudes for middle-latency ERPs from the scrambled stimuli. For the normal pictures, stimulus repetition was associated with increased component amplitudes for all potentials and decreased RTs of all affective categories. For the scrambled pictures, no repetition changes were obtained. The findings suggest that stimulus arousal level contributes more than valence to affective ERP measures for normal as well as perceptually distorted pictures. Stimulus repetition engages memory for previous normal picture items but is not influenced by affective category [jo1] . Theoretical implications are discussed. KeywordsInternational Affective Picture System; IAPS; event-related potentials (ERPs); P300; arousal; valence; repetition IntroductionThe perceptual system utilizes information gained through previous exposure to affective events thereby facilitating subsequent processing of similar stimuli. As event-related potentials Publisher's Disclaimer: This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. (ERPs) can provide fine-grain temporal resolution of the underlying mechanisms, this neuroimaging method has become highly useful for assessing affective neural processing (Bradley et al., 1992;Dolcos and Cabeza, 2002;Ito et al., 1998;Lang et al., 1993Lang et al., , 1999. Although affective ERPs can be generated automatically by motivationally relevant picture motifs (appetitive, fearful, sexual), emotional stimuli also modulate ERPs even if the image content is not readily perceived (Codispoti et al., 2006;Schupp et al., 2006). The present study employs a stimulus repetition paradigm to characterize these issues by comparing affective pictures with "scrambled" image c...

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Section: Erps From Affective Picture Stimulimentioning

confidence: 99%

Affective visual event-related potentials: Arousal, valence, and repetition effects for normal and distorted pictures

Rozenkrants

Olofsson

Polich

2007

International Journal of Psychophysiology

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“…This approach facilitates at least a broad generalization of affective influences on the waveform, such that the affective ERP timing pattern serves as theoretical scaffolding that supports the empirical valence and arousal ERP effects. In general, ERPs from IAPS images suggest that more attention is garnered by affective content compared to neutral conditions, with amplitude modulations observed for the early and late components (Carretie et al, 2001Conroy and Polich, 2007;Schupp et al, 1997Schupp et al, ,2000. The temporal courses of ERP valence and arousal effects differ, however, as valence appear to influence relatively early (100-250 ms) and arousal influences relatively late (200-1000 ms) components Olofsson and Polich, 2007).…”

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confidence: 96%

“…A theoretical integration of affective processing influences on P3a in relation to P3b has not been developed in part because affect ERP studies using a passive viewing condition have not reported such valence-dependent effects (Amrhein et al, 2004;Cuthbert et al, 2000). Thus, only the P3b appears sensitive to both valence and arousal variation, which suggests that these factors specifically influence target processing (Conroy and Polich, 2007;. …”

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confidence: 99%

“…Affective ERP results are typically of maximum amplitude over the parietal cortex, suggesting that emotional arousal amplifies activity in cortical structures that are normally engaged for target processing (Sabatinelli et al, 2007). Valence level also can modulate P300 when arousal level is controlled (Cano and Polich, 2006;Conroy and Polich, 2007; Rozenkrants and Polich, 2007), which may be related to affective EEG findings of approach/withdrawal stimulus evaluation (Davidson, 2001).The relationship between affective stimulus conditions to the P3a and P3b subcomponents has been addressed using temporal principal component analysis. In this context, image valence level does not alter P3a but does influence P3b amplitude, such that pleasant pictures elicit larger components than unpleasant pictures when the pictures are task-relevant (Carretie et al, 2006;Delplanque et al, 2004).…”

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confidence: 99%

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Affective picture processing: An integrative review of ERP findings

Olofsson¹,

Nordin²,

Sequeira³

et al. 2008

Biological Psychology

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1,127

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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 primarily modulate ERP component amplitude, with little change in peak latency observed. Arousal effects are consistently obtained, and generally occur at longer latencies. Valence effects are inconsistently reported at several latency ranges, including very early components. Some affective ERP modulations vary with recording methodology, stimulus factors, as well as task-relevance and emotional state. Affective ERPs have been linked theoretically to attention orientation for unpleasant pictures at earlier components (<300 ms). Enhanced stimulus processing has been associated with memory encoding for arousing pictures of assumed intrinsic motivational relevance, with task-induced differences contributing to emotional reactivity at later components (>300 ms). Theoretical issues, stimulus factors, task demands, and individual differences are discussed.

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“…To explore pleasantness connections between the quality levels, the alpha band from the measured EEG was used. Since there is an inverse relationship between alpha activity and P300 amplitude, ERPs can be used instead for brief analysis of this aspect [16]. A general trend for the differences between the amplitudes of AF3 and AF4 can be seen; as this value is lower for pleasant stimuli than for unpleasant ones, although this is not statistically significant.…”

Section: Discussionmentioning

confidence: 92%

Subjective quality ratings and physiological correlates of synthesized speech

Arndt

Voigt-Antons

Gupta

et al. 2013

2013 Fifth International Workshop on Quality of Multimedia Experience (QoMEX)

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Evaluating the quality of text-to-speech systems (TTS) is usually achieved by subjective methods where participants have to rate the stimulus on multiple scales, such as naturalness, prosody, and overall quality. In the present study, we aim towards evaluating TTS system quality using not only conventional subjective methods, but also via a neurophysiological approach based on obtaining neural correlates of TTS quality perception using electroencephalography (EEG). Such an approach allows for better insight into the perception processes involved during the human quality judgement process, and may open doors to innovative subjective testing methods and/or objective measurement tools. In our experiments, we have shown an inverse relationship between TTS speech quality and the amplitude of an EEG evoked response called the 'P300,' suggesting an increase in cognitive load as TTS quality decreases, likely due to reduction in speech intelligibility.

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Affective valence and P300 when stimulus arousal level is controlled

Cited by 75 publications

References 37 publications

Affective visual event-related potentials: Arousal, valence, and repetition effects for normal and distorted pictures

Affective visual event-related potentials: Arousal, valence, and repetition effects for normal and distorted pictures

Affective picture processing: An integrative review of ERP findings

Subjective quality ratings and physiological correlates of synthesized speech

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