Correcting Slightly Less Simple Movements
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| Title: | Correcting Slightly Less Simple Movements |
|---|---|
| Language: | English |
| Authors: | Aivar, M. P., Brenner, E., Smeets, J. B. J. |
| Source: | Psicologica: International Journal of Methodology and Experimental Psychology. 2005 26(1):61-79. |
| Availability: | University of Valencia. Dept. Metodologia, Facultad de Psicologia, Avda. Blasco Ibanez 21, 46010 Valencia, Spain. Tel: +34-96-386-4100; Web site: http://www.uv.es/revispsi/ |
| Peer Reviewed: | Y |
| Physical Description: | |
| Page Count: | 19 |
| Publication Date: | 2005 |
| Document Type: | Journal Articles Reports - Evaluative |
| Descriptors: | Adults, Sequential Learning, Effect Size, Patterned Responses, Experiments, Motion, Interaction, Dimensional Preference, Paired Associate Learning, Serial Learning |
| ISSN: | 0211-2159 |
| Abstract: | Many studies have analysed how goal directed movements are corrected in response to changes in the properties of the target. However, only simple movements to single targets have been used in those studies, so little is known about movement corrections under more complex situations. Evidence from studies that ask for movements to several targets in sequence suggests that whole sequences of movements are planned together. Planning related segments of a movement together makes it possible to optimise the whole sequence, but it means that some parts are planned quite long in advance, so that it is likely that they will have to be modified. In the present study we examined how people respond to changes that occur while they are moving to the first target of a sequence. Subjects moved a stylus across a digitising tablet. They moved from a specified starting point to two targets in succession. The first of these targets was always at the same position but it could have one of two sizes. The second target could be in one of two different positions and its size was different in each case. On some trials the first target changed size, and on some others the second target changed size and position, as soon as the subject started to move. When the size of the first target changed the subjects slowed down the first segment of their movements. Even the peak velocity, which was only about 150 ms after the change in size, was lower. Beside this fast response to the change itself, the dwell time at the first target was also affected: its duration increased after the change. Changing the size and position of the second target did not influence the first segment of the movement, but also increased the dwell time. The dwell time was much longer for a small target, irrespective of its initial size. If subjects knew in advance which target could change, they moved faster than if they did not know which could change. Taken together, these results suggest that the whole sequence is treated as one action, which can be corrected if the properties of any of the targets change. The precise nature and timing of the correction depends on how the change influences the task. (Contains 1 table and 7 figures.) |
| Abstractor: | As Provided |
| Number of References: | 27 |
| Entry Date: | 2009 |
| Accession Number: | EJ844415 |
| Database: | ERIC |
| FullText | Text: Availability: 0 CustomLinks: – Url: https://eric.ed.gov/contentdelivery/servlet/ERICServlet?accno=EJ844415 Name: ERIC Full Text Category: fullText Text: Full Text from ERIC |
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| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=eric&AN=EJ844415 |
| RecordInfo | BibRecord: BibEntity: Languages: – Text: English PhysicalDescription: Pagination: PageCount: 19 StartPage: 61 Subjects: – SubjectFull: Adults Type: general – SubjectFull: Sequential Learning Type: general – SubjectFull: Effect Size Type: general – SubjectFull: Patterned Responses Type: general – SubjectFull: Experiments Type: general – SubjectFull: Motion Type: general – SubjectFull: Interaction Type: general – SubjectFull: Dimensional Preference Type: general – SubjectFull: Paired Associate Learning Type: general – SubjectFull: Serial Learning Type: general Titles: – TitleFull: Correcting Slightly Less Simple Movements Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Aivar, M. P. – PersonEntity: Name: NameFull: Brenner, E. – PersonEntity: Name: NameFull: Smeets, J. B. J. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Type: published Y: 2005 Identifiers: – Type: issn-print Value: 0211-2159 Numbering: – Type: volume Value: 26 – Type: issue Value: 1 Titles: – TitleFull: Psicologica: International Journal of Methodology and Experimental Psychology Type: main |
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