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Table 2 Instructions for each attentional focus group: control group (CON), external group (EXT), and internal group (INT)

From: The impact of external and internal focus of attention on visual dependence and EEG alpha oscillations during postural control

Group Instructions
CON “The VR scene may or may not move. Regardless of whether it moves or not, please look straight ahead at the iceberg on the horizon and try to keep yourself as still and upright as possible.”
EXT “In order to help you keep still and upright, please look straight ahead at the iceberg on the horizon and pay attention to how the board is moving. Focus on keeping the rocker board leveled. We will be looking at how well the board is leveled”
INT “In order to help you keep still and upright, look straight ahead at the iceberg on the horizon and pay attention to how your feet are moving. Focus on keeping both feet leveled to each other. We will be looking how well your feet are leveled.”