Advanced analysis of free visual exploration patterns in schizophrenia

Area of Science:

• Cognitive Neuroscience
• Psychiatry
• Visual Perception

Background:

• Visual scanpath analysis reveals insights into attention allocation during social situation exploration.
• Schizophrenia patients may exhibit restricted visual exploration, characterized by reduced saccade frequency and prolonged fixation duration.

Purpose of the Study:

• To investigate whether schizophrenia patients display restricted visual exploration or qualitatively different exploration strategies compared to healthy controls.
• To compare visual exploration behaviors between schizophrenia patients and healthy controls across varying cognitive and emotional demands.

Main Methods:

• Assessed scanpaths of 32 schizophrenia patients and 33 healthy controls freely exploring daily life situations.
• Utilized fixation and saccade parameters to compare temporal exploration changes, cluster analyses, attentional landscapes, and scanpath similarities.

Main Results:

• Schizophrenia patients showed fewer fixation clusters, longer fixation durations, and fewer cluster transitions than controls.
• Scanpath patterns and attentional landscapes differed significantly; patients exhibited a greater increase in fixation duration over time.
• Cognitive complexity and emotional strain affected visual exploration similarly in both groups.

Conclusions:

• Schizophrenia patients demonstrated a more focal processing mode with longer attention allocation and fewer attention shifts.
• Visual exploration alterations in schizophrenia appear to be a general deficit, independent of scene complexity or emotional strain.
• Despite impairments, schizophrenia patients could adapt their scanning behavior to varying cognitive and emotional demands, similar to controls.