Mechanism Involvement During Skill Imagery

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Abstract
Explanations of the effects of initial mental imagery practice on the subsequent performance of a motor task may be divided into two categories. Inflow explanations propose that proprioceptive feedback generated during imagery practice serves as the underlying mechanism while outflow explanations claim that cognitive operations (e.g., motor programs) generated during skill imagery serve as the basis for physical performance. A test of these two models was conducted by comparing unilateral and bilateral transfer in a rotary pursuit task following either imagery or physical practice (cf. Wallace, 1977). The results showed that all transfer groups produced positive transfer relative to a no-practice control group. Further, unilateral transfer was greater than bilateral transfer for physical practice. There was no difference between unilateral and bilateral transfer for imagery practice. These data were interpreted as evidence for an outflow explanation of skill imagery.