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Cognitive processing in new and practiced discrete keying sequences.

Willem B Verwey1, Elger L Abrahamse, Elian de Kleine

  • 1Cognitive Psychology and Ergonomics, University of Twente Enschede, Netherlands.

Frontiers in Psychology
|August 12, 2011
PubMed
Summary
This summary is machine-generated.

Cognitive control plays a key role in initiating and executing movement sequences. With practice, motor chunks facilitate execution, but cognitive processes remain involved, especially in complex tasks.

Keywords:
chunkingdiscrete sequence production taskkeying sequencesmotor skillssecondary tasktask switching

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Area of Science:

  • Cognitive Psychology
  • Motor Learning
  • Neuroscience

Background:

  • Understanding cognitive control is crucial for motor sequence learning.
  • The dual processor model explains how cognitive and motor systems interact during task execution.

Purpose of the Study:

  • To investigate the role of cognitive control in initiating and executing familiar and unfamiliar movement sequences.
  • To examine how practice influences the interplay between cognitive and motor processors.

Main Methods:

  • Participants practiced key press sequences to familiarize them with specific stimuli.
  • A test phase involved executing familiar and unfamiliar sequences with auditory stimuli and a tone-counting task.
  • Response times and interkey intervals were analyzed to infer cognitive and motor contributions.

Main Results:

  • Results support the dual processor model, showing a shift in cognitive processor role from execution to initiation with practice.
  • Sequence execution with limited practice involves non-cognitive learning and explicit knowledge for some participants.
  • Extended practice still shows cognitive processor involvement in slower responses, and motor chunks were identified within sequences.

Conclusions:

  • The dual processor model is supported, with motor chunk development enabling sequence execution.
  • Learning involves non-cognitive mechanisms and explicit knowledge, extending the basic dual processor model.
  • Cognitive control continues to influence performance even after extensive practice, particularly in sequence initiation and complex execution.