Presentation Title

Lateralized Activity in the Visual Cortex Predicts Emotion-Related Decisions

Faculty Mentor

Jesse J. Bengson

Start Date

18-11-2017 10:45 AM

End Date

18-11-2017 11:00 AM

Location

15-1808

Session

Social Science 1

Type of Presentation

Oral Talk

Subject Area

behavioral_social_sciences

Abstract

While numerous studies have investigated emotion through the presentation of visual stimuli, no study has focused on the role of the visual system during decision-driven emotional expectancies. Early visual representations to an otherwise neutral cue may bias decision-making. To test this hypothesis, we measured EEG activity during an attention task in which individuals responded to neutral cues by endogenously generating happy or sad expectancies. Results indicate that early lateralized visuocortical activity predicted subsequent positive and negative decisional outcomes. These results provide evidence that decision-making, even for abstract emotional categories, is influenced by early visual responses to neutral stimuli.

Keywords: decision-making, visual perception, vision, attention, emotion, EEG

Summary of research results to be presented

Event-Related-Potentials of the happy minus sad condition in the 150-200ms window revealed differences in hemispheric activation in accordance with subsequent decisional outcomes. Positive valence decisions showed greater activation in the left visual cortex, and negative in the right, respectively, well before the onset of the targets. These results suggest that hemispheric activation in the visual cortex may influence later emotion-related decision-making.

Our results indicate that the way the cue happens to represent itself in the visual cortex predicts decisional outcomes. Differentiating activity is observed at a post-cue onset and pre-top-down conscious decision-making processing interval, indicating a bottom-up type of effect during a top-down cognitive task. Although this concept is new, Peelen, Fei-Fei, and Kastner (2009) found that pre-activation of categorically distinguished neurons in the visual cortex biased scene processing. The present results suggest that top-down and bottom-up interaction may be more dynamic than previously considered and that the decision to expect abstract emotional categories occurs in part via a lateralized visuocortical response.

In summary, the visual system is continuously exposed to rafts of information and our results suggest that on a moment to moment basis, bottom-up visual cortical mechanisms may bias emotional expectations at any given moment.

This document is currently not available here.

Share

COinS
 
Nov 18th, 10:45 AM Nov 18th, 11:00 AM

Lateralized Activity in the Visual Cortex Predicts Emotion-Related Decisions

15-1808

While numerous studies have investigated emotion through the presentation of visual stimuli, no study has focused on the role of the visual system during decision-driven emotional expectancies. Early visual representations to an otherwise neutral cue may bias decision-making. To test this hypothesis, we measured EEG activity during an attention task in which individuals responded to neutral cues by endogenously generating happy or sad expectancies. Results indicate that early lateralized visuocortical activity predicted subsequent positive and negative decisional outcomes. These results provide evidence that decision-making, even for abstract emotional categories, is influenced by early visual responses to neutral stimuli.

Keywords: decision-making, visual perception, vision, attention, emotion, EEG