Influence of visual feedback, hand dominance and sex on individuated finger movements

• DOI: 10.1007/s00221-021-06100-0
• Publication Date: 2021-04-19T09:03:16Z
• Authors: Anna-Maria Johansson; Helena Grip; Louise Rönnqvist; Jonas Selling; Carl-Johan Boraxbekk; Andrew Strong; Charlotte K. Häger
• Keywords: Proprioception; Middle finger; Ring finger; Little finger; Motor Control

Abstract The ability to perform individual finger movements, highly important in daily activities, involves visual monitoring and proprioception. We investigated the influence of vision on spatial temporal control independent for dominant non-dominant hand relation sex. Twenty-six healthy middle-aged old adults (M age = 61 years; range 46–79 females n 13) participated. Participants performed cyclic flexion–extension movements at metacarpophalangeal joint one a time while keeping other fingers as still possible. Movements were recorded using 3D optoelectronic motion technique (120 Hz). movement trajectory distance; speed peaks (movement smoothness); Individuation Index (II; degree can move isolation from fingers) Stationarity (SI; how remains move) extracted. main findings were: (1) only improved II SI marginally; (2) longer trajectories evident no-vision condition female group; (3) specifically middle ring within (4) had marginally higher compared with males; (5) fewer than males, particularly finger. Our results suggest that improves performance our non-manipulative task. A consistent finding was showed greater males.