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The simultaneous perception of auditory-tactile stimuli in voluntary movement.

Hao Q, Ogata T, Ogawa K, Kwon J, Miyake Y - Front Psychol (2015)

Bottom Line: To eliminate the potential effect of stimulus predictability and the effect of spatial information associated with large-scale movement in the previous studies, we randomized the interval between the start of movement and the first stimulus, and used small-scale movement.These results indicate that voluntary movement itself affects the PSS in auditory-tactile simultaneous perception, but it does not influence the JND.In the discussion of these results, we suggest that simultaneous perception may be affected by the efference copy.

View Article: PubMed Central - PubMed

Affiliation: Department of Computational Intelligence and Systems Science, Tokyo Institute of Technology Yokohama, Japan.

ABSTRACT
The simultaneous perception of multimodal information in the environment during voluntary movement is very important for effective reactions to the environment. Previous studies have found that voluntary movement affects the simultaneous perception of auditory and tactile stimuli. However, the results of these experiments are not completely consistent, and the differences may be attributable to methodological differences in the previous studies. In this study, we investigated the effect of voluntary movement on the simultaneous perception of auditory and tactile stimuli using a temporal order judgment task with voluntary movement, involuntary movement, and no movement. To eliminate the potential effect of stimulus predictability and the effect of spatial information associated with large-scale movement in the previous studies, we randomized the interval between the start of movement and the first stimulus, and used small-scale movement. As a result, the point of subjective simultaneity (PSS) during voluntary movement shifted from the tactile stimulus being first during involuntary movement or no movement to the auditory stimulus being first. The just noticeable difference (JND), an indicator of temporal resolution, did not differ across the three conditions. These results indicate that voluntary movement itself affects the PSS in auditory-tactile simultaneous perception, but it does not influence the JND. In the discussion of these results, we suggest that simultaneous perception may be affected by the efference copy.

No MeSH data available.


Related in: MedlinePlus

Average psychometric functions among all blocks in the voluntary, involuntary, and no movement conditions for one participant. Positive SOA values mean that the auditory stimulus was presented before the tactile stimulus, and vice versa.
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Figure 3: Average psychometric functions among all blocks in the voluntary, involuntary, and no movement conditions for one participant. Positive SOA values mean that the auditory stimulus was presented before the tactile stimulus, and vice versa.

Mentions: We used MATLAB Statistics Toolbox (MathWorks, Natick, MA, USA) for the statistical regression calculations and graphic representation of the results. First, we calculated for each SOA the proportion of the answers, in which the auditory stimulus was perceived first. Then, logistic regressions were conducted using a generalized linear model with the ratio data for each condition. Psychometric curves were fitted to the distribution of the mean TOJ data for the voluntary, involuntary, and no movement conditions, as shown in Figure 3.


The simultaneous perception of auditory-tactile stimuli in voluntary movement.

Hao Q, Ogata T, Ogawa K, Kwon J, Miyake Y - Front Psychol (2015)

Average psychometric functions among all blocks in the voluntary, involuntary, and no movement conditions for one participant. Positive SOA values mean that the auditory stimulus was presented before the tactile stimulus, and vice versa.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4585164&req=5

Figure 3: Average psychometric functions among all blocks in the voluntary, involuntary, and no movement conditions for one participant. Positive SOA values mean that the auditory stimulus was presented before the tactile stimulus, and vice versa.
Mentions: We used MATLAB Statistics Toolbox (MathWorks, Natick, MA, USA) for the statistical regression calculations and graphic representation of the results. First, we calculated for each SOA the proportion of the answers, in which the auditory stimulus was perceived first. Then, logistic regressions were conducted using a generalized linear model with the ratio data for each condition. Psychometric curves were fitted to the distribution of the mean TOJ data for the voluntary, involuntary, and no movement conditions, as shown in Figure 3.

Bottom Line: To eliminate the potential effect of stimulus predictability and the effect of spatial information associated with large-scale movement in the previous studies, we randomized the interval between the start of movement and the first stimulus, and used small-scale movement.These results indicate that voluntary movement itself affects the PSS in auditory-tactile simultaneous perception, but it does not influence the JND.In the discussion of these results, we suggest that simultaneous perception may be affected by the efference copy.

View Article: PubMed Central - PubMed

Affiliation: Department of Computational Intelligence and Systems Science, Tokyo Institute of Technology Yokohama, Japan.

ABSTRACT
The simultaneous perception of multimodal information in the environment during voluntary movement is very important for effective reactions to the environment. Previous studies have found that voluntary movement affects the simultaneous perception of auditory and tactile stimuli. However, the results of these experiments are not completely consistent, and the differences may be attributable to methodological differences in the previous studies. In this study, we investigated the effect of voluntary movement on the simultaneous perception of auditory and tactile stimuli using a temporal order judgment task with voluntary movement, involuntary movement, and no movement. To eliminate the potential effect of stimulus predictability and the effect of spatial information associated with large-scale movement in the previous studies, we randomized the interval between the start of movement and the first stimulus, and used small-scale movement. As a result, the point of subjective simultaneity (PSS) during voluntary movement shifted from the tactile stimulus being first during involuntary movement or no movement to the auditory stimulus being first. The just noticeable difference (JND), an indicator of temporal resolution, did not differ across the three conditions. These results indicate that voluntary movement itself affects the PSS in auditory-tactile simultaneous perception, but it does not influence the JND. In the discussion of these results, we suggest that simultaneous perception may be affected by the efference copy.

No MeSH data available.


Related in: MedlinePlus