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The Emotional Stroop Task: Assessing Cognitive Performance under Exposure to Emotional Content
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Emotional targets: evaluative categorization as a function of context and content.

Anna Weinberg1, Joseph Hilgard, Bruce D Bartholow

  • 1Department of Psychology, Stony Brook University, Stony Brook, NY 11794-2500, USA.

International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology
|February 21, 2012
PubMed
Summary

This study used an emotional oddball task to examine how emotional content and context influence evaluative categorization. Findings reveal that target status, not emotional valence, significantly impacts the late positive potential (LPP) over time.

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Area of Science:

  • Cognitive Neuroscience
  • Affective Science

Background:

  • Event-related potential (ERP) studies often use oddball paradigms to assess attention to stimuli based on content and context.
  • Previous research has not fully explored the interplay between emotional valence and context, nor the temporal dynamics of these effects.

Purpose of the Study:

  • To investigate the time-course of evaluative categorization effects on the late positive potential (LPP).
  • To clarify the nature of evaluative categorization by examining emotional content and context interactions.

Main Methods:

  • Employed an emotional oddball task with pleasant, neutral, and unpleasant images as targets and non-targets.
  • Recorded event-related potentials (ERPs), focusing on the late positive potential (LPP) component.

Main Results:

  • Additive effects of emotional content and target status were observed in the early LPP.
  • The LPP did not differ between pleasant and unpleasant stimuli.
  • Only target status modulated the later portion of the LPP.

Conclusions:

  • Evaluative categorization involves distinct cognitive-affective processes that unfold over time.
  • Target status plays a crucial role in modulating neural responses during evaluative categorization, particularly in later stages.