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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

Averaged distribution of the unsigned error for each direction in degrees. The numbers outside of the circles represent the LSs; the participant was facing LS 0. Concentric lines indicate steps of 10° of deviation from the true LS angle. Gray full line: head turning in Hc, gray dashed line: head turning in HAPc, black full line: arm pointing in HAPc. Statistical differences (ANOVA and Sidak Post hoc tests, Asymp. Sig. <0.05) between head turning in Hc and HAPc (A), between head in Hc and arm pointing in HAPc (B), and between head and arm in HAPc (C), are denoted with asterisks.
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Figure 3: Averaged distribution of the unsigned error for each direction in degrees. The numbers outside of the circles represent the LSs; the participant was facing LS 0. Concentric lines indicate steps of 10° of deviation from the true LS angle. Gray full line: head turning in Hc, gray dashed line: head turning in HAPc, black full line: arm pointing in HAPc. Statistical differences (ANOVA and Sidak Post hoc tests, Asymp. Sig. <0.05) between head turning in Hc and HAPc (A), between head in Hc and arm pointing in HAPc (B), and between head and arm in HAPc (C), are denoted with asterisks.

Mentions: Unsigned error values of pointing varied with the response movement (head turning or arm pointing), with the response condition (Hc or HAPc), and with the direction of pointing (Figure 3). In Hc, head turning produced overall more errors in the rear space than in the sides and frontal spaces (Figure 3, gray full line). In HAPc, head turning errors followed the same pattern, but with larger errors than in the Hc (Figure 3, gray dashed line).


Response actions influence the categorization of directions in auditory space.

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

Averaged distribution of the unsigned error for each direction in degrees. The numbers outside of the circles represent the LSs; the participant was facing LS 0. Concentric lines indicate steps of 10° of deviation from the true LS angle. Gray full line: head turning in Hc, gray dashed line: head turning in HAPc, black full line: arm pointing in HAPc. Statistical differences (ANOVA and Sidak Post hoc tests, Asymp. Sig. <0.05) between head turning in Hc and HAPc (A), between head in Hc and arm pointing in HAPc (B), and between head and arm in HAPc (C), are denoted with asterisks.
© Copyright Policy
Related In: Results  -  Collection

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Figure 3: Averaged distribution of the unsigned error for each direction in degrees. The numbers outside of the circles represent the LSs; the participant was facing LS 0. Concentric lines indicate steps of 10° of deviation from the true LS angle. Gray full line: head turning in Hc, gray dashed line: head turning in HAPc, black full line: arm pointing in HAPc. Statistical differences (ANOVA and Sidak Post hoc tests, Asymp. Sig. <0.05) between head turning in Hc and HAPc (A), between head in Hc and arm pointing in HAPc (B), and between head and arm in HAPc (C), are denoted with asterisks.
Mentions: Unsigned error values of pointing varied with the response movement (head turning or arm pointing), with the response condition (Hc or HAPc), and with the direction of pointing (Figure 3). In Hc, head turning produced overall more errors in the rear space than in the sides and frontal spaces (Figure 3, gray full line). In HAPc, head turning errors followed the same pattern, but with larger errors than in the Hc (Figure 3, gray dashed line).

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