Congruency, Cues Type, SOA, tDCS
Conditions
Keywords
transcranial direct current stimulation, gaze cueing effect, orbitofrontal cortex
Brief summary
This study employs transcranial direct current stimulation (tDCS) to investigate the role of the orbitofrontal cortex (OFC) in processing gaze and arrow cues.
Detailed description
This study employs transcranial direct current stimulation (tDCS) to investigate the role of the orbitofrontal cortex (OFC) in processing gaze and arrow cues.To examine the distinct functions of the OFC in processing social versus non-social stimuli, participants were randomly assigned to one of three tDCS groups: anodal, cathodal, or sham. Following stimulation, all participants completed a spatial cueing task involving both gaze and arrow cues. Two stimulus onset asynchrony (SOA) conditions (200 ms and 600 ms) were implemented to investigate how timing modulates the processing of these cues within the rOFC.
Interventions
use eye gaze images as cues
use arrow images as cues
The stimulus onset asynchrony (SOA) between the cue and the target was 200 ms.
The stimulus onset asynchrony (SOA) between the cue and the target was 600 ms.
The cue is spatially congruent with the target.
The cue is spatially incongruent with the target.
Sponsors
Study design
Eligibility
Inclusion criteria
* healthy subjects without past or current psychiatric or neurological disorders
Exclusion criteria
* history of head injury * no implants in the head * medical or psychiatric illness.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Reaction time to the judgment of the target location. | 1 hour | The primary analysis focused on the reaction times for judging the target location under each condition. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Magnitude of the cueing effect | 1 hour | This index is derived by subtracting the congruent reaction time from the incongruent reaction time to quantify the magnitude of the cueing effect. |
Countries
China