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Pubmed for Handhelds

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  • Title: Task performance and electromyopotential as functions of task difficulty and EMG feedback.
    Author: Connally RE, Dieter JN, Uliano K.
    Journal: Percept Mot Skills; 1986 Apr; 62(2):555-62. PubMed ID: 3503266.
    Abstract:
    The dearth of empirical research in the application of biofeedback is discussed. Exp. 1 assessed relationships among biofeedback EMG training, EMG levels, cognitive task performance, and task difficulty. 72 subjects (male or female college students) were administered 1 trial on an iconic memory task with either EMG audio feedback, sham EMG audio feedback, or no feedback. Three levels of task difficulty were used. One 20-min. training session significantly lowered EMG responses, and task performance was inversely related to task difficulty. No relationship between EMG level and task performance was observed. Exp. 2 investigated the effect of increased EMG responses on cognitive task performance for one level of difficulty. One biofeedback training session did not significantly increase frontalis EMG, and there was no relationship between increased EMG and task performance.
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