[EN]We investigated the extent to which a complex
finger sequence impacts on hand switching costs in a sequential
action. Response component latencies (premotor, motor, and
movement) were compared in no-switch (same finger per formed the action of pressing and reaching) and switch condi tions (pressing with one finger and completing the reaching
action with the homologous finger from the other hand). Results
showed that the switch condition presented longer latency for
premotor and movement components. For the motor compo nent, however, switch condition was faster. This expands the
previous literature investigating switching costs using simple
finger movements in more complex tasks. A mechanical expla nation of the interplay between response subcomponents is pro vided to explain the inversion of response pattern for the motor
component.
