Impact of instructed relevance on the visual ERP

Potts, Geoffrey F.; Patel, Salil H.; Azzam, Pierre N.

doi:10.1016/j.ijpsycho.2003.10.005

Cited by 89 publications

(69 citation statements)

References 32 publications

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“…These consist of late (P2 and P3) effects indicating the detection of infrequent events by post-perceptual processes, and early (N1) effects indicating a rapid detection of infrequent events by perceptual processes that may originate in visual brain areas (e.g., Di Russo et al, 2002). An enhanced N1 to infrequent visual stimuli has been reported before (e.g., Czigler, 21 Balazs, & Pato, 2004;Kenemans, Grent't, Jong, & Verbaten, 2003;Potts, Patel, & Azzam, 2004), but is a less robust finding than P2 and P3 oddball effects. Laterality effects at frontal sites for these components were also present, with greater oddball effects at left-as compared with right-hemisphere locations.…”

Section: Erp Oddball Effects: Comparisons Of Standard and Deviant Stisupporting

confidence: 49%

Neurophysiological evidence for categorical perception of color

Holmes

Franklin

Clifford

et al. 2009

Brain and Cognition

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Section: Erp Oddball Effects: Comparisons Of Standard and Deviant Stisupporting

confidence: 49%

Neurophysiological evidence for categorical perception of color

Holmes

Franklin

Clifford

et al. 2009

Brain and Cognition

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“…This ERP component (referred to here as the P2a) is more positive to stimuli that are instructed targets in the participant's task (see Figure 1). The P2a has the same medial frontal spatial distribution and estimated MFC sources to a variety of target stimuli, including auditory and visual, and in a variety of response tasks, including overt and covert responding, suggesting that it is not sensitive to specific perceptual features or response options but rather to the relevance of the item to the current task (Potts, 2004;Potts, Patel, & Azzam, 2004;Potts & Tucker, 2001;Potts, Dien, Hartry-Speiser, McDougal, & Tucker, 1998). Thus, the spatio-temporal distribution of the P2a and its cognitive-eliciting conditions are consistent with an index of attention selection in the MFC.…”

Section: Introductionmentioning

confidence: 97%

“…Two ERP components associated with DA reward prediction input to the MFC, the P2a and the MFN, appear related in that they both occur between about 200 and 300 msec, both have medial frontal scalp distributions, and both localize to the MFC. However, the P2a is a positive deflection associated with perceptual item evaluation (Potts, 2004;Potts, Patel, et al, 2004), whereas the MFN is a negative deflection associated with action monitoring Gehring & Willoughby, 2002a). If the P2a and MFN index the same medial frontal neural system performing the same generalpurpose evaluative function under the influence of input from the DA reward prediction system, then the response properties of the ERP recorded over medial prefrontal leads between 200 and 300 msec poststimulus should mirror those of VTA DA neurons even in the absence of instructed attention or explicit response: most positive to unpredicted reward and most negative when a predicted reward is not delivered.…”

Section: Introductionmentioning

confidence: 99%

When Things Are Better or Worse than Expected: The Medial Frontal Cortex and the Allocation of Processing Resources

Potts

Martin

Burton

et al. 2006

Journal of Cognitive Neuroscience

278

243

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Abstract& Access to limited-capacity neural systems of cognitive control must be restricted to the most relevant information. How the brain identifies and selects items for preferential processing is not fully understood. Anatomical models often place the selection mechanism in the medial frontal cortex (MFC), and one computational model proposes that the mesotelencephalic dopamine (DA) system, via its reward prediction properties, provides a ''gate'' through which information gains access to limited-capacity systems. There is a medial frontal eventrelated potential (ERP) index of attention selection, the anterior positivity (P2a), associated with DA reward system input to the MFC for the identification of task-relevant perceptual representations. The P2a has a similar spatio-temporal distribution as the medial frontal negativity (MFN), elicited to error responses or choices resulting in monetary loss. The MFN has also been linked to DA projections to the MFC but for action monitoring rather than attention selection. This study proposes that the P2a and the MFN reflect the same MFC evaluation function and use a passive reward prediction design containing neither instructed attention nor response to demonstrate that the ERP over medial frontal leads at the P2a/MFN latency is consistent with activity of midbrain DA neurons, positive to unpredicted rewards and negative when a predicted reward is withheld. This result suggests that MFC activity is regulated by DA reward system input and may function to identify items or actions that exceed or fail to meet motivational prediction. &

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“…This component is associated with categorization, perceptual closure, and attention focusing, ultimately signaling that a perceptual representation has been formed (Potts, Patel, & Azzam, 2004).…”

Section: Stimulus-locked Erpmentioning

confidence: 99%

“…Whereas the P300 in general is thought to represent "context updating/closure" (Donchin & Coles, 1988), in three-stimuli oddball task the P3a is interpreted as "orienting," and the P3b as an index of an ability to maintain sustained attention to target (Alho, Lavikainen, Reinikainen, Sams, & Näätänen, 1990;Potts et al, 2004). The anterior P3a indexes the contextual salience of the rare stimuli, whereas posterior P3b is indexing task-relevance of the stimuli (Gaeta, Friedman, & Hunt, 2003).…”

Section: Erp As Trauma-related Cue Reactivity In Ptsdmentioning

confidence: 99%

Event-related Potentials (ERP) in Cognitive Neuroscience Research and Applications

Sokhadze

Casanova

Lamina

et al. 2017

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This review is aimed at exploring the usefulness of measuring event-related potential (ERP) in cognitive tests and discusses several applications of the ERP technique. Analysis of ERP components is one of the most informative dynamic methods of investigation and monitoring of information processing stages in the human brain. Amplitude and latency of ERP components at specified topographies reflect early sensory perception processes and higher level processing including attention, cortical inhibition, memory update, error monitoring, and other cognitive activities. ERPs provide a method of studying cognitive processes in typical subjects, as well as a sensitive instrument to assess differences in individuals with neuro-and psychopathologies. Despite significant advances in functional neuroimaging, the ERP measure still represents an important tool for brain research in psychiatry, as many psychiatric diseases correlate with certain altered patterns of ERPs. Such ERP alterations can serve as valid biological markers for functional diagnostic or for better understanding of the cognitive functions which are disturbed in psychiatric disorders. Application of ERPs in psychiatric treatment research is an approach aimed at validation of specific ERP measures as sensitive functional outcomes of experimental neuromodulation interventions such as rTMS and neurofeedback. Also discussed are additional aspects of ERP usefulness in psychiatry research and treatment.

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Impact of instructed relevance on the visual ERP

Cited by 89 publications

References 32 publications

Neurophysiological evidence for categorical perception of color

Neurophysiological evidence for categorical perception of color

When Things Are Better or Worse than Expected: The Medial Frontal Cortex and the Allocation of Processing Resources

Event-related Potentials (ERP) in Cognitive Neuroscience Research and Applications

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