کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
920279 | 920276 | 2009 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Representation of movement sequences is related to task characteristics Representation of movement sequences is related to task characteristics](/preview/png/920279.png)
Recent experiments have produced mixed results in terms of performance when, after learning a sequential task, the same visual–spatial coordinates or the same motor coordinates were reinstated on a subsequent effector transfer test. Given the diversity of tasks and especially sequence characteristics used in previous experiments, the cross-experimental comparison makes inferences and unambiguous interpretations difficult. The purpose of the present experiment was to determine in a principled manner how the spatio-temporal structure of a sequence influences the way the sequence is represented. The results indicated that after limited amount of practice relatively more simple sequences (S1) are coded more efficiently in a mirror (motor) representation which requires the same pattern of homologous muscle activation. Conversely, relatively more complex sequences (S2) are more efficiently coded in a visual–spatial coordinate system which requires movements to the same spatial locations as during acquisition. The data are also consistent with the notion that sequences with different spatio-temporal structures rely to a different degree on distinct control mechanisms (pre-planned vs. on-line, respectively).
Journal: Acta Psychologica - Volume 132, Issue 1, September 2009, Pages 54–61