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Embodied mental rotation: a special link between egocentric transformation and the bodily self.

Kaltner S, Riecke BE, Jansen P - Front Psychol (2014)

Bottom Line: In line with this, we expected that images of the own body are solved faster than another person's body stimuli.Results showed a benefit of motor expertise and representations of another person's body, but only for the object-based transformation task.Regarding stimulus material, the other-advantage ascribed to increased self-awareness-consciousness distracting attention-demanding resources, disappeared in the egocentric condition.

View Article: PubMed Central - PubMed

Affiliation: Institute of Sport Science, University of Regensburg Regensburg, Germany.

ABSTRACT
This experiment investigated the influence of motor expertise on object-based versus egocentric transformations in a chronometric mental rotation task using images of either the own or another person's body as stimulus material. According to the embodied cognition viewpoint, we hypothesized motor-experts to outperform non-motor experts specifically in the egocentric condition because of higher kinesthetic representation and motor simulations compared to object-based transformations. In line with this, we expected that images of the own body are solved faster than another person's body stimuli. Results showed a benefit of motor expertise and representations of another person's body, but only for the object-based transformation task. That is, this other-advantage diminishes in egocentric transformations. Since motor experts did not show any specific expertise in rotational movements, we concluded that using human bodies as stimulus material elicits embodied spatial transformations, which facilitates performance exclusively for egocentric transformations. Regarding stimulus material, the other-advantage ascribed to increased self-awareness-consciousness distracting attention-demanding resources, disappeared in the egocentric condition. This result may be due to the stronger link between the bodily self and motor representations compared to that emerging in object-based transformations.

No MeSH data available.


Related in: MedlinePlus

Reaction time (mean and SE) dependent on angular disparity for object-based and egocentric transformations.
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Figure 4: Reaction time (mean and SE) dependent on angular disparity for object-based and egocentric transformations.

Mentions: Regarding RT, the repeated-measures analysis of variance revealed three significant main effects for the factors “view,” F(1,79) = 178.53, p ≤ 0.001, = 0.69, “group,” F(1,79) = 8.45, p ≤ 0.001, = 0.09, and “angular disparity,” F(1,79) = 267.97, p < 0.001, = 0.77, as illustrated in Table 1. Participants took longer to solve the front view (M = 1146.9 ms, SD = 38.3 ms) than for the back view (M = 902.8 ms, SD = 24.9 ms), t(80) = 12.87, p ≤ 0.001, confirming the front-view-disadvantage also found in object-based transformations. Interestingly, for the object-based conditions the effect size for comparing front vs. back view was r = 0.62 (d = 1.57), whereas the effect size for the factor “view” in egocentric transformations was much stronger with r = 0.96 (d = 0.62). The main effect of “group” indicates that motor-experts (M = 942.0 ms, SD = 41.1) solved egocentric transformations faster than non-motor experts (M = 1114.1 ms, SD = 42.6), t(80) = –2.91, p = 0.005. Note that this result corroborates the prediction of Hypothesis 1. Regarding the main effect of the factor “angular disparity” (cf. Figure 4), RTs in the egocentric condition did not differ between angular disparities of 45° and 90°, t(80) = –1.29, p = 0.119. Furthermore, by trend RT in the egocentric transformation condition surprisingly decreased between the angular disparity of 0° and 45°. That is, whereas RTs in the object-based condition roughly increased linearly with increasing disparity as expected, they showed a U-shaped pattern for the egocentric transformation condition. Increasing disparity in the egocentric task only led to higher response times for disparities larger than 90°. All other effects did not reach significance at the 0.05 level. In comparison with the roughly linear increase of response time with “angular disparity” in object-based transformations, the observed U-shaped pattern for egocentric transformations provides support for Hypothesis 7, which predicted that the small-angle-advantage should be more pronounced for the object-based transformations.


Embodied mental rotation: a special link between egocentric transformation and the bodily self.

Kaltner S, Riecke BE, Jansen P - Front Psychol (2014)

Reaction time (mean and SE) dependent on angular disparity for object-based and egocentric transformations.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4042493&req=5

Figure 4: Reaction time (mean and SE) dependent on angular disparity for object-based and egocentric transformations.
Mentions: Regarding RT, the repeated-measures analysis of variance revealed three significant main effects for the factors “view,” F(1,79) = 178.53, p ≤ 0.001, = 0.69, “group,” F(1,79) = 8.45, p ≤ 0.001, = 0.09, and “angular disparity,” F(1,79) = 267.97, p < 0.001, = 0.77, as illustrated in Table 1. Participants took longer to solve the front view (M = 1146.9 ms, SD = 38.3 ms) than for the back view (M = 902.8 ms, SD = 24.9 ms), t(80) = 12.87, p ≤ 0.001, confirming the front-view-disadvantage also found in object-based transformations. Interestingly, for the object-based conditions the effect size for comparing front vs. back view was r = 0.62 (d = 1.57), whereas the effect size for the factor “view” in egocentric transformations was much stronger with r = 0.96 (d = 0.62). The main effect of “group” indicates that motor-experts (M = 942.0 ms, SD = 41.1) solved egocentric transformations faster than non-motor experts (M = 1114.1 ms, SD = 42.6), t(80) = –2.91, p = 0.005. Note that this result corroborates the prediction of Hypothesis 1. Regarding the main effect of the factor “angular disparity” (cf. Figure 4), RTs in the egocentric condition did not differ between angular disparities of 45° and 90°, t(80) = –1.29, p = 0.119. Furthermore, by trend RT in the egocentric transformation condition surprisingly decreased between the angular disparity of 0° and 45°. That is, whereas RTs in the object-based condition roughly increased linearly with increasing disparity as expected, they showed a U-shaped pattern for the egocentric transformation condition. Increasing disparity in the egocentric task only led to higher response times for disparities larger than 90°. All other effects did not reach significance at the 0.05 level. In comparison with the roughly linear increase of response time with “angular disparity” in object-based transformations, the observed U-shaped pattern for egocentric transformations provides support for Hypothesis 7, which predicted that the small-angle-advantage should be more pronounced for the object-based transformations.

Bottom Line: In line with this, we expected that images of the own body are solved faster than another person's body stimuli.Results showed a benefit of motor expertise and representations of another person's body, but only for the object-based transformation task.Regarding stimulus material, the other-advantage ascribed to increased self-awareness-consciousness distracting attention-demanding resources, disappeared in the egocentric condition.

View Article: PubMed Central - PubMed

Affiliation: Institute of Sport Science, University of Regensburg Regensburg, Germany.

ABSTRACT
This experiment investigated the influence of motor expertise on object-based versus egocentric transformations in a chronometric mental rotation task using images of either the own or another person's body as stimulus material. According to the embodied cognition viewpoint, we hypothesized motor-experts to outperform non-motor experts specifically in the egocentric condition because of higher kinesthetic representation and motor simulations compared to object-based transformations. In line with this, we expected that images of the own body are solved faster than another person's body stimuli. Results showed a benefit of motor expertise and representations of another person's body, but only for the object-based transformation task. That is, this other-advantage diminishes in egocentric transformations. Since motor experts did not show any specific expertise in rotational movements, we concluded that using human bodies as stimulus material elicits embodied spatial transformations, which facilitates performance exclusively for egocentric transformations. Regarding stimulus material, the other-advantage ascribed to increased self-awareness-consciousness distracting attention-demanding resources, disappeared in the egocentric condition. This result may be due to the stronger link between the bodily self and motor representations compared to that emerging in object-based transformations.

No MeSH data available.


Related in: MedlinePlus