Electrophysiological correlates of categorization: P300 amplitude as index of target similarity

Azizian, Allen; Freitas, Antonio L.; Watson, Todd D.; Squires, Nancy K.

doi:10.1016/j.biopsycho.2005.05.002

Cited by 108 publications

(95 citation statements)

References 27 publications

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“…According to previous studies, P300 reflects neurophysiological mechanisms of decision-making and categorical processing (Azizian et al, 2006;Courchesne et al, 1977;Kotchoubey and Lang, 2001;Kutas et al, 1977). When the categorization becomes more difficult, P300 amplitudes become smaller (Polich, 2007;Verleger et al, 1985).…”

Section: Discussionmentioning

confidence: 87%

“…As mentioned earlier, P300 is typically elicited in the target condition relative to the non-target condition. Azizian et al (2006) proposed that equally probable stimuli that were easily evaluated as non-target required less mental work for discrimination and produced no P300-like components. From this line of reasoning, with a final Tone4, question intonation seems to be evaluated as possessing target-like properties, whereas statement intonation is evaluated as possessing non-target-like properties.…”

Section: Discussionmentioning

confidence: 99%

“…The P300 is a positive-going deflection peaking at around 300 ms in a time window of about 250-500 ms, or even to 900 ms (Patel and Azzam, 2005). It is thought to be elicited in the process of decision making (Hillyard et al, 1973;Nieuwenhuis et al, 2005;Rohrbaugh et al, 1974;Smith et al, 1970;Verleger et al, 2005), reflective of processes involved in stimulus evaluation or categorization (Azizian et al, 2006;Frenck-Mestre et al, 2005;Johnson and Donchin, 1980;Kutas et al, 1977).…”

Section: Introductionmentioning

confidence: 99%

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Online processing of tone and intonation in Mandarin: Evidence from ERPs

2016

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a b s t r a c tEvent-related potentials (ERPs) were used to investigate the online processing of tone and intonation in Mandarin at the attentive stage. We examined the behavioral and electrophysiological responses of native Mandarin listeners to Mandarin sentences, which contrast in final tones (rising Tone2 or falling Tone4) and intonations (Question or Statement). A clear P300 effect was observed for question-statement contrast in sentences ending with Tone4, but no ERP effect was found for question-statement contrast in sentences ending with Tone2. Our results provide ERP evidence for the interaction of tone and intonation in Mandarin, confirming the findings with behavioral metalinguistic data that native Mandarin listeners can distinguish between question intonation and statement intonation when the intonation is associated with a final Tone4, but fail to do so when the intonation is associated with a final Tone2. Our study extended the understanding of online processing of tone and intonation (1) from the pre-attentive stage to the attentive stage and (2) within a larger domain (i.e. multi-word utterances) than a single word utterance.

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Section: Discussionmentioning

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Online processing of tone and intonation in Mandarin: Evidence from ERPs

2016

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“…Non-target/target similarity could provide information about how non-target stimuli are processed. If non-target stimuli are processed as task-relevant information, they would elicit a target-like P300 and target-similar non-target stimuli would elicit larger amplitude than target-dissimilar non-target stimuli (Azizian et al, 2006;Watson et al, 2005). In contrast, if non-target stimuli are processed as distractor information, they would elicit P3a and target-dissimilar non-target stimuli would elicit larger amplitude than target-similar non-target stimuli (Berti et al, 2004;Courchesne et al, 1975;Friedman et al, 1993).…”

Section: Present Studymentioning

confidence: 97%

Stimulus context determines whether non-target stimuli are processed as task-relevant or distractor information

Sawaki

Katayama

2006

Clinical Neurophysiology

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Objective: The P300 event-related brain potential (ERP) was elicited using a visual three-stimulus oddball paradigm (standard 0.70, target 0.15, non-target 0.15) to examine how target/standard stimulus context affects non-target processing.Methods: Target/standard discrimination difficulty (easy or difficult) and non-target /target similarity (similar or dissimilar) were manipulated orthogonally. Participants (N = 13) were instructed to respond to each infrequent target stimulus by pressing a button.Results: Target stimuli in all task conditions elicited P3b, which was affected only by the difficulty of target/standard discrimination. When target/standard discrimination was easy, the amplitude of non-target P3 was larger for similar than for dissimilar non-target. In contrast, when target/standard discrimination was difficult, non-target stimuli elicited P3a, the amplitude of which was larger for dissimilar than for similar non-target. Thus, the P300 component for non-target stimuli and the pattern of the effect of target similarity on each P300 component varied as a function of the target/standard stimulus context. Conclusions:The target/standard stimulus context influences the attentional set for stimulus processing such that it determines whether non-target stimuli are processed as task-relevant or distractor information.

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“…The topographic distribution for this component is somewhat more central than the parietal P300 from the target stimulus. The no-go P300 has been linked to response inhibition mechanisms, although this hypothesis is debated (Azizian et al, 2006;Eimer, 1993;Falkenstein et al, 2000;Salisbury et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Updating P300: An integrative theory of P3a and P3b

Polich

2007

Clinical Neurophysiology

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The empirical and theoretical development of the P300 event-related brain potential (ERP) is reviewed by considering factors that contribute to its amplitude, latency, and general characteristics. The neuropsychological origins of the P3a and P3b subcomponents are detailed, and how target/ standard discrimination difficulty modulates scalp topography is discussed. The neural loci of P3a and P3b generation are outlined, and a cognitive model is proffered: P3a originates from stimulusdriven frontal attention mechanisms during task processing, whereas P3b originates from temporalparietal activity associated with attention and appears related to subsequent memory processing. Neurotransmitter actions associating P3a to frontal/dopaminergic and P3b to parietal/norepinephrine pathways are highlighted. Neuroinhibition is suggested as an overarching theoretical mechanism for P300, which is elicited when stimulus detection engages memory operations.

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Electrophysiological correlates of categorization: P300 amplitude as index of target similarity

Cited by 108 publications

References 27 publications

Online processing of tone and intonation in Mandarin: Evidence from ERPs

Online processing of tone and intonation in Mandarin: Evidence from ERPs

Stimulus context determines whether non-target stimuli are processed as task-relevant or distractor information

Updating P300: An integrative theory of P3a and P3b

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