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document
Variability in isochronous tapping : higher order dependencies as a function of intertap interval . Isochronous serial interval production ( ISIP ) data , as from unpaced finger tapping , exhibit higher order dependencies ( drift ) . This fact has largely been ignored by the timing literature , one reason probably being that influential timing models assume random variability . Men and women , 22-36 years old , performed a synchronization-continuation task with intertap intervals ( ITI ) from 0.4 s to 2.2 s. ISIP variability was partitioned into components attributable to drift and 1st-order serial correlation , and the results indicate that ( a ) drift contributes substantially to the dispersion for longer ITIs , ( b ) drift and 1st-order correlation are different functions of the ITI , and ( c ) drift exhibits break close to 1.0 s and 1.4 s ITI . These breaks correspond to qualitative changes in performance for other temporal tasks , which suggests common timing processes across modalities and tasks .
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Intervention_Physical
isochronous tapping
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Intervention_Physical
unpaced finger tapping
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Intervention_Physical
synchronization-continuation task with intertap intervals ( ITI )
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Participant_Condition
isochronous tapping
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Participant_Condition
Isochronous serial interval production ( ISIP
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Participant_Sex
Men
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Participant_Sex
women
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Participant_Age
22-36 years