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The influence of early aging on eye movements during motor simulation.

McCormick SA, Causer J, Holmes PS - Age (Dordr) (2014)

Bottom Line: Movement based interventions such as imagery and action observation are used increasingly to support physical rehabilitation of adults during early aging.Using eye movement metrics this paper reports findings that question the congruency of the three conditions.This concern for imagery was also seen in the less congruent temporal relationship in movement time between imagery and movement execution suggesting imagery inaccuracy in early aging.

View Article: PubMed Central - PubMed

Affiliation: Cognitive Motor Function Group, Institute for Performance Research, Manchester Metropolitan University Cheshire Faculty, Crewe Green Road, Crewe Cheshire, CW1 5DU, UK.

ABSTRACT
Movement based interventions such as imagery and action observation are used increasingly to support physical rehabilitation of adults during early aging. The efficacy of these more covert approaches is based on an intuitively appealing assumption that movement execution, imagery and observation share neural substrate; alteration of one influences directly the function of the other two. Using eye movement metrics this paper reports findings that question the congruency of the three conditions. The data reveal that simulating movement through imagery and action observation may offer older adults movement practice conditions that are not constrained by the age-related decline observed in physical conditions. In addition, the findings provide support for action observation as a more effective technique for movement reproduction in comparison to imagery. This concern for imagery was also seen in the less congruent temporal relationship in movement time between imagery and movement execution suggesting imagery inaccuracy in early aging.

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Related in: MedlinePlus

The total fixation duration during each block of 10 repeated reach actions. The data have been collapsed for condition as the ANOVA revealed no significant difference between AE, MI and AO
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Fig4: The total fixation duration during each block of 10 repeated reach actions. The data have been collapsed for condition as the ANOVA revealed no significant difference between AE, MI and AO

Mentions: A main effect for size (F1.339, 18.742 = 9.734, p = 0.003, ηp2 = 0.410) but not condition (F1.356, 18.981 = 1.239, p = 0.305) was found. Pairwise comparisons revealed that the total fixation duration was significantly less at the large target (7.968 ± 3.250 s) compared to the small target (10.010 ± 3.903 s), Figure 4. There was a main effect of age (F1, 14 = 7.351, p = 0.017, ηp2 = 0.344) that indicated older participants, compared to younger participants, fixated the target look-zone for longer (10.721 ± 3.115 s vs 7.040 ± 1.910 s).Fig. 4


The influence of early aging on eye movements during motor simulation.

McCormick SA, Causer J, Holmes PS - Age (Dordr) (2014)

The total fixation duration during each block of 10 repeated reach actions. The data have been collapsed for condition as the ANOVA revealed no significant difference between AE, MI and AO
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4150898&req=5

Fig4: The total fixation duration during each block of 10 repeated reach actions. The data have been collapsed for condition as the ANOVA revealed no significant difference between AE, MI and AO
Mentions: A main effect for size (F1.339, 18.742 = 9.734, p = 0.003, ηp2 = 0.410) but not condition (F1.356, 18.981 = 1.239, p = 0.305) was found. Pairwise comparisons revealed that the total fixation duration was significantly less at the large target (7.968 ± 3.250 s) compared to the small target (10.010 ± 3.903 s), Figure 4. There was a main effect of age (F1, 14 = 7.351, p = 0.017, ηp2 = 0.344) that indicated older participants, compared to younger participants, fixated the target look-zone for longer (10.721 ± 3.115 s vs 7.040 ± 1.910 s).Fig. 4

Bottom Line: Movement based interventions such as imagery and action observation are used increasingly to support physical rehabilitation of adults during early aging.Using eye movement metrics this paper reports findings that question the congruency of the three conditions.This concern for imagery was also seen in the less congruent temporal relationship in movement time between imagery and movement execution suggesting imagery inaccuracy in early aging.

View Article: PubMed Central - PubMed

Affiliation: Cognitive Motor Function Group, Institute for Performance Research, Manchester Metropolitan University Cheshire Faculty, Crewe Green Road, Crewe Cheshire, CW1 5DU, UK.

ABSTRACT
Movement based interventions such as imagery and action observation are used increasingly to support physical rehabilitation of adults during early aging. The efficacy of these more covert approaches is based on an intuitively appealing assumption that movement execution, imagery and observation share neural substrate; alteration of one influences directly the function of the other two. Using eye movement metrics this paper reports findings that question the congruency of the three conditions. The data reveal that simulating movement through imagery and action observation may offer older adults movement practice conditions that are not constrained by the age-related decline observed in physical conditions. In addition, the findings provide support for action observation as a more effective technique for movement reproduction in comparison to imagery. This concern for imagery was also seen in the less congruent temporal relationship in movement time between imagery and movement execution suggesting imagery inaccuracy in early aging.

Show MeSH
Related in: MedlinePlus