umu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
MicroTouch®Screen technology for the use of coding crude movements and as a response surface for pointing tasks
Umeå University, Faculty of Social Sciences, Department of Psychology.
2000 (English)Report (Refereed)
Abstract [en]

The following is a description of an inexpensive touch monitor system, based on a MicroTouch monitor and specifically developed software. When touching the MicroTouch monitor, a pre-determined set of values are extracted and displayed in a terminal window as single X and Y coordinates. The program is written in C, runs directly in either MS DOS or through Windows and also serves as a receiver that automatically saves the X and Y coordinates in a text-file format. This paper describes the overall system, discusses the system validity and reliability as well as how it was used in a context of coding crude motor behavior and as a response surface for a specific pen-pointing task.

Place, publisher, year, edition, pages
Umeå: Umeå universitet, psykologiska institutionen , 2000. , 12 p.
Series
Umeå psychological reports, ISSN 0375-4561 ; 211
National Category
Psychology (excluding Applied Psychology)
Research subject
Psychology
Identifiers
URN: urn:nbn:se:umu:diva-81213OAI: oai:DiVA.org:umu-81213DiVA: diva2:653452
Available from: 2013-10-04 Created: 2013-10-04 Last updated: 2014-02-21Bibliographically approved
In thesis
1. Prospective Control and Object Representation in Yound Infants: An action-based account
Open this publication in new window or tab >>Prospective Control and Object Representation in Yound Infants: An action-based account
2001 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The aim of the present thesis was to study the age-related differences of prospective control and object representation in young infants. The overall set of theoretical and empirical issues addressed in this thesis consists of how infants represent and react to visible and non-visible moving objects. This involves understanding the interrelationship between different actions, such as head and trunk movements, and reaching. Questions about infants’ ability to negotiate different kinds of motions and the notion that infant representation of an occluded object can be graded in strength are also addressed in the present thesis. The hypothesis of graded representation proposed that a concept of object representation is not a clear-cut distinction between whether one has a representation or not. It is rather a graded process, evolving with experience and becoming embedded in processes underlying overt behaviour. Study I showed that perturbing an object affected the quality of grasp, which seems to indicate that the approach and grasp components are, at least partially, integrated by nine months of age. The analysis of the relationship between head and hand movements showed tightness in the coupling between these movements, as indicated by a small correction time difference between them. Study III showed that 6-month-old infants, under certain conditions, can form a dynamical representation of a moving and temporarily occluded object, taking into account the velocity and the direction of the object’s motion. It also revealed three other interesting findings: firstly, that an occluder could provide landmark information about object reappearance; secondly, that reaching was dramatically disrupted when the object was temporarily non-visible either due to occlusion or blackout of the room lights and thirdly, that reaching recovered markedly after a few trials, but only when subject to blackout. Overall, the results supported the hypothesis of graded representations. In Study IV, when infants observed a circular object motion, it was shown that while head tracking is functional in 6-month-old infants, it continues to develop and become more refined up to, and beyond, the age of 12 months. The structural organization of head tracking in both 6 and 12-month-old infants complied with an organizational pattern of accelerations and decelerations, or so-called movement units, which is in line with earlier studies of both goal-directed and spontaneous arm movements. The intersegmental coupling between the head and the trunk showed that the infants tried to stabilise head movements by adjustments of the trunk. In addition, study II presents a method for coding prehensile movements by means of a touch screen system, which is used in study III.

Place, publisher, year, edition, pages
Umeå: Umeå universitet, 2001. 53 p.
National Category
Psychology (excluding Applied Psychology)
Research subject
Psychology
Identifiers
urn:nbn:se:umu:diva-81215 (URN)91-7305-030-X (ISBN)
Public defence
Beteendevetarhuset, Umeå universitet, Umeå (English)
Opponent
Supervisors
Available from: 2014-02-21 Created: 2013-10-04 Last updated: 2014-02-21Bibliographically approved

Open Access in DiVA

fulltext(261 kB)117 downloads
File information
File name FULLTEXT01.pdfFile size 261 kBChecksum SHA-512
d58a1442ecd4d776aad73dd0f49e577a0ec74b9723ac998f521424d2377f03a85b0e8ab3762441edf2245ce3880ca3069a5409629c2f9d7986188fceba1674de
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Jonsson, Bert
By organisation
Department of Psychology
Psychology (excluding Applied Psychology)

Search outside of DiVA

GoogleGoogle Scholar
Total: 117 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 53 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf