NCT06934902

Attentional Capture by Real-life Episodic Information

• Status: Not Yet Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 86 (estimated)
• Sponsor: Hospices Civils de Lyon · Academic / Other
• Sex: All
• Age: 18 Years – 40 Years
• Healthy volunteers: Accepted

Summary

Attention facilitates the allocation of processing resources and the control of behavior among competing stimuli. Current research focuses primarily on attention control networks in the dorsal frontoparietal (DAN) and ventral (VAN) cortex. However, typical laboratory experiments emphasize task-specific processing, neglecting the possible role of memory. Although a few studies have examined the contribution of memory to attention control, they have generally used simple tasks in the laboratory. These tasks are unlikely to produce true traces of episodic memory, which are - by definition - characterized by complex contextual information (what, where, when) and personal relevance. This research will therefore use an innovative protocol based on mobile phone technology to generate episodes in the participants' real lives and then measure the impact of these past personal experiences on attention allocation (by assessing eye movements) and on the activity of the DAN/VAN system (using functional imaging). The main hypothesis of the study is that knowledge acquired during everyday life contributes to the subsequent allocation of processing resources, via engagement of the DAN/VAN attention systems.

Conditions

• Healthy Volunteers
• Attentional Capture

Interventions

Type	Name	Description
BEHAVIORAL	Old vs new objects" encoding phase and fMRI	During the encoding phase, a set of 60 objects will be presented to the participants in their everyday life. Pictures of objects sent to their app mobile phone over a period of 3 weeks. The following week, participants will have an fMRI. During fMRI, participants will see objects already seen or not seen during the encoding phase.
BEHAVIORAL	" incongruent vs. congruent contexts " encoding phase and fMRI	During the encoding phase, a set of 60 objects will be presented to the participants in their everyday life. Pictures of objects sent to their app mobile phone over a period of 3 weeks. This time, the objects will be chosen according to the participant's location. The following week, participants will have an fMRI. During fMRI, participants will see objects encoding in congruent/incongruent contexts.

Timeline

• Start date: 2025-12-15
• Primary completion: 2029-01-15
• Completion: 2029-01-15
• First posted: 2025-04-18
• Last updated: 2025-04-18

Locations

1 site across 1 country: France