Efficient visual search for facial emotions in patients with major depression

Bodenschatz, Charlott Maria; Czepluch, Felix; Kersting, Anette; Suslow, Thomas · 2021 · OpenAlex-citations

DOI: 10.1186/s12888-021-03093-6

archive: archived pipeline: cataloged verified

Get this paper ↗ (DOI — opens at the source; we link to it, we don't host it)

Summary

This study investigates attentional biases in patients with major depressive disorder (MDD) during the visual search for emotional facial expressions. While previous research using free-viewing paradigms suggested that depressed individuals exhibit heightened attention to negative stimuli and reduced attention to positive ones, reaction-time-based visual search studies yielded inconsistent results. The authors aimed to resolve this discrepancy by employing eye-tracking technology, which provides a more granular analysis of attentional allocation than manual response times alone. Specifically, the study sought to determine if depressed individuals show biased guidance of attention toward emotional targets or biased processing of distractors in a "face-in-the-crowd" task. The researchers compared the gaze behavior of 38 clinically depressed inpatients and 38 gender-matched healthy controls. Participants completed a face-in-the-crowd task using photographs of happy, angry, and neutral faces as targets and distractors. Eye movements were recorded using an infrared video-based eye-tracking system. The study analyzed four specific eye-gaze metrics: (1) latency to the target face, (2) the number of distractor faces fixated before fixating the target, (3) mean fixation time per distractor face prior to target fixation, and (4) mean fixation time on the target face. The experimental design included all combinations of target and distractor valences to assess how emotional context influenced search efficiency. The results indicated that depressed and healthy individuals did not differ in manual response times. Eye-tracking data revealed no significant group differences in the latency to reach the target, the duration of attention allocated to distractors, or the duration of attention allocated to targets. However, a significant main effect of group was found regarding the number of distractors fixated: depressed individuals fixated fewer distinct distractor faces before identifying the target compared to healthy controls, regardless of the emotional valence of the expressions. This finding suggests that depressed participants were more efficient in skipping irrelevant stimuli during the search process. The study concludes that under conditions of clear task demands, individuals with major depression process angry and happy facial expressions in crowds similarly to healthy individuals. The data provide no evidence for biased attention guidance toward emotional targets or biased processing of emotional distractors in depression during active visual search. Instead, the findings suggest that depressed individuals can allocate and guide their attention as efficiently as healthy controls when searching for emotional faces. This challenges the notion of a pervasive attentional bias toward negative stimuli in depression during goal-directed visual search tasks, highlighting the importance of using eye-tracking metrics to distinguish between attentional engagement and disengagement processes.

Provenance

The full processing record for this entry. Every stage of this paper's journey through the pipeline is logged — what ran, with which tool and model, how many attempts it took, and when it last completed.

Summary generated by qwen3.6-27b-prismaquant on 2026-06-25; verification: verified.

Topics

Ranked by relevance to this paper. Hover a topic for its definition.

• visual search