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Response actions influence the categorization of directions in auditory space.

Velten MC, Bläsing BE, Hermann T, Vorwerg C, Schack T - Front Psychol (2015)

Bottom Line: Chi-square tests revealed an effect of response condition for directions within the left and right sides.We conclude that movement-based response actions influence the representation of auditory space, especially within the sides' regions.Moreover, the representation of auditory space favors the front and the back regions in terms of resolution, which is possibly related to the physiological characteristics of the human auditory system, as well as to the ecological requirements of action control in the different regions.

View Article: PubMed Central - PubMed

Affiliation: Neurocognition and Action Research Group, Department of Sport Science, Faculty of Psychology and Sport Science, Bielefeld University Bielefeld, Germany ; Center of Excellence Cognitive Interaction Technology, Bielefeld University Bielefeld, Germany.

ABSTRACT
Spatial region concepts such as "front," "back," "left," and "right" reflect our typical interaction with space, and the corresponding surrounding regions have different statuses in memory. We examined the representation of spatial directions in the auditory space, specifically in how far natural response actions, such as orientation movements toward a sound source, would affect the categorization of egocentric auditory space. While standing in the middle of a circle with 16 loudspeakers, participants were presented acoustic stimuli coming from the loudspeakers in randomized order, and verbally described their directions by using the concept labels "front," "back," "left," "right," "front-right," "front-left," "back-right," and "back-left." Response actions varied in three blocked conditions: (1) facing front, (2) turning the head and upper body to face the stimulus, and (3) turning the head and upper body plus pointing with the hand and outstretched arm toward the stimulus. In addition to a protocol of the verbal utterances, motion capture and video recording generated a detailed corpus for subsequent analysis of the participants' behavior. Chi-square tests revealed an effect of response condition for directions within the left and right sides. We conclude that movement-based response actions influence the representation of auditory space, especially within the sides' regions. Moreover, the representation of auditory space favors the front and the back regions in terms of resolution, which is possibly related to the physiological characteristics of the human auditory system, as well as to the ecological requirements of action control in the different regions.

No MeSH data available.


Related in: MedlinePlus

Mean signed errors of head turning in Hc (triangles) and HAPc (squares), and arm pointing (circles). Line: actual angles of LS directions in relation to LS0; whiskers: standard deviation. (A) Head turning in Hc and HAPc; (B) Head turning in Hc and arm pointing in HAPc; (C) Head turning and arm pointing in HAPc. Asterisks indicate results of ANOVA and Sidak Post hoc tests at the significance levels of 0.05.
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Figure 4: Mean signed errors of head turning in Hc (triangles) and HAPc (squares), and arm pointing (circles). Line: actual angles of LS directions in relation to LS0; whiskers: standard deviation. (A) Head turning in Hc and HAPc; (B) Head turning in Hc and arm pointing in HAPc; (C) Head turning and arm pointing in HAPc. Asterisks indicate results of ANOVA and Sidak Post hoc tests at the significance levels of 0.05.

Mentions: More specific than the unsigned errors, the signed errors denote the deviation (in degrees) from the original LS direction, and the sign of the averaged errors, indicating whether the LS position was generally underestimated (i.e., perceived as closer to the LS 0) or overestimated (i.e., perceived as away from LS 0). The averaged signed errors of the response movements are shown in Table 2 and Figure 4.


Response actions influence the categorization of directions in auditory space.

Velten MC, Bläsing BE, Hermann T, Vorwerg C, Schack T - Front Psychol (2015)

Mean signed errors of head turning in Hc (triangles) and HAPc (squares), and arm pointing (circles). Line: actual angles of LS directions in relation to LS0; whiskers: standard deviation. (A) Head turning in Hc and HAPc; (B) Head turning in Hc and arm pointing in HAPc; (C) Head turning and arm pointing in HAPc. Asterisks indicate results of ANOVA and Sidak Post hoc tests at the significance levels of 0.05.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4528091&req=5

Figure 4: Mean signed errors of head turning in Hc (triangles) and HAPc (squares), and arm pointing (circles). Line: actual angles of LS directions in relation to LS0; whiskers: standard deviation. (A) Head turning in Hc and HAPc; (B) Head turning in Hc and arm pointing in HAPc; (C) Head turning and arm pointing in HAPc. Asterisks indicate results of ANOVA and Sidak Post hoc tests at the significance levels of 0.05.
Mentions: More specific than the unsigned errors, the signed errors denote the deviation (in degrees) from the original LS direction, and the sign of the averaged errors, indicating whether the LS position was generally underestimated (i.e., perceived as closer to the LS 0) or overestimated (i.e., perceived as away from LS 0). The averaged signed errors of the response movements are shown in Table 2 and Figure 4.

Bottom Line: Chi-square tests revealed an effect of response condition for directions within the left and right sides.We conclude that movement-based response actions influence the representation of auditory space, especially within the sides' regions.Moreover, the representation of auditory space favors the front and the back regions in terms of resolution, which is possibly related to the physiological characteristics of the human auditory system, as well as to the ecological requirements of action control in the different regions.

View Article: PubMed Central - PubMed

Affiliation: Neurocognition and Action Research Group, Department of Sport Science, Faculty of Psychology and Sport Science, Bielefeld University Bielefeld, Germany ; Center of Excellence Cognitive Interaction Technology, Bielefeld University Bielefeld, Germany.

ABSTRACT
Spatial region concepts such as "front," "back," "left," and "right" reflect our typical interaction with space, and the corresponding surrounding regions have different statuses in memory. We examined the representation of spatial directions in the auditory space, specifically in how far natural response actions, such as orientation movements toward a sound source, would affect the categorization of egocentric auditory space. While standing in the middle of a circle with 16 loudspeakers, participants were presented acoustic stimuli coming from the loudspeakers in randomized order, and verbally described their directions by using the concept labels "front," "back," "left," "right," "front-right," "front-left," "back-right," and "back-left." Response actions varied in three blocked conditions: (1) facing front, (2) turning the head and upper body to face the stimulus, and (3) turning the head and upper body plus pointing with the hand and outstretched arm toward the stimulus. In addition to a protocol of the verbal utterances, motion capture and video recording generated a detailed corpus for subsequent analysis of the participants' behavior. Chi-square tests revealed an effect of response condition for directions within the left and right sides. We conclude that movement-based response actions influence the representation of auditory space, especially within the sides' regions. Moreover, the representation of auditory space favors the front and the back regions in terms of resolution, which is possibly related to the physiological characteristics of the human auditory system, as well as to the ecological requirements of action control in the different regions.

No MeSH data available.


Related in: MedlinePlus