Intact attentional control of working memory encoding in schizophrenia

Area of Science:

• Cognitive Neuroscience
• Psychiatry

Background:

• Schizophrenia (SC) is often associated with broad impairments in attention and working memory (WM).
• Previous research suggests global attention deficits in individuals with SC.
• The precise nature of attentional and WM deficits in SC requires further clarification.

Purpose of the Study:

• To investigate whether individuals with schizophrenia (SC) exhibit intact attentional selection for visual working memory (WM) storage.
• To determine if top-down and bottom-up cues can guide WM encoding in SC.
• To assess the ability to spontaneously select representations for WM storage in SC.

Main Methods:

• A series of 5 experiments were conducted.
• Participants included 62 individuals with SC and 55 control participants.
• WM encoding and selective attention abilities were examined using various cues.

Main Results:

• Participants with SC demonstrated a consistent and robust ability to use selective attention for WM control across all 5 experiments.
• This preserved functioning in attentional selection for WM storage was observed despite reported broad attention and WM impairments in SC.
• Findings suggest an 'island of preserved functioning' regarding selective attention in WM for individuals with SC.

Conclusions:

• Attention is not globally impaired in schizophrenia (SC).
• Individuals with SC possess intact attentional selection capabilities for visual working memory (WM) storage.
• These findings allow for a more precise delineation of specific attention impairments in schizophrenia.