Head Movement
The Effects of Head Movement and Pinnae Distortion on Sound Localisation
Abstract:
Human’s ability to locate sounds on their midline can be effected by the distortion of the pinnae, as well as the restriction of head movement. The study investigated the effects of head moment and pinnae distortion on sound localisation through the presentation of a sound stimulus along three points of the participants midline, in front, above or behind the participants head. The study was carried out under four conditions including having a normal pinnae with no head movement, a distorted pinnae with no head movement, a normal pinnae with head movement and a distorted pinnae with head movement. It was hypothesised that head movement being allowed, in comparison …show more content…
Participants attended their allocated weekly tutorial where the study was carried out. The sample consisted of 34.9% males and 65.1% females, and had a mean age of 20.24(SD = 5.65).
Materials:
Both the scorer and experimenter were supplied with instructions; the scorer was also supplied with a score sheet to record correct sound localisations made by the participant. The experimenter was instructed to shake a set of keys in a pre determined sequence one metre above the participants head in three separate positions whilst the participant was sitting in a seat below. All participants experienced the same sequence of locations and were marked by the scorer for incorrect and correct localisations of the sound source. …show more content…
The experimenter was given a list of sequenced positions in which they would shake a set of keys for two seconds at equal distances of approximately one metre away from the participants head, either behind, above or in front. The experiment was carried out under four conditions, the conditions included having a normal pinnae with no head movement, a distorted pinnae with no head movement, a normal pinnae with head movement and a distorted pinnae with head movement. Under the first condition the participant was required to shut their eyes and keep their head still, whilst the experimenter shook the keys in a sequenced order. After each time the keys were shaken, the participant was then required to state the position they thought the keys were being shaken at, incorrect and correct localisations were then recorded by the scorer in a table. This was then repeated for the remaining positions and results were recorded. Participant was then asked to relax before beginning the second condition. In the second condition, the participant was instructed to distort their pinnae, by pinching in the top and the middle of the outer ear, whilst making sure that the ear canal was not covered, whilst still closing their eyes and maintaining no head movement. The sequence of keys being shaken was then carried out and results were recorded. The third condition required the participant to keep
Abstract:
Human’s ability to locate sounds on their midline can be effected by the distortion of the pinnae, as well as the restriction of head movement. The study investigated the effects of head moment and pinnae distortion on sound localisation through the presentation of a sound stimulus along three points of the participants midline, in front, above or behind the participants head. The study was carried out under four conditions including having a normal pinnae with no head movement, a distorted pinnae with no head movement, a normal pinnae with head movement and a distorted pinnae with head movement. It was hypothesised that head movement being allowed, in comparison …show more content…
Participants attended their allocated weekly tutorial where the study was carried out. The sample consisted of 34.9% males and 65.1% females, and had a mean age of 20.24(SD = 5.65).
Materials:
Both the scorer and experimenter were supplied with instructions; the scorer was also supplied with a score sheet to record correct sound localisations made by the participant. The experimenter was instructed to shake a set of keys in a pre determined sequence one metre above the participants head in three separate positions whilst the participant was sitting in a seat below. All participants experienced the same sequence of locations and were marked by the scorer for incorrect and correct localisations of the sound source. …show more content…
The experimenter was given a list of sequenced positions in which they would shake a set of keys for two seconds at equal distances of approximately one metre away from the participants head, either behind, above or in front. The experiment was carried out under four conditions, the conditions included having a normal pinnae with no head movement, a distorted pinnae with no head movement, a normal pinnae with head movement and a distorted pinnae with head movement. Under the first condition the participant was required to shut their eyes and keep their head still, whilst the experimenter shook the keys in a sequenced order. After each time the keys were shaken, the participant was then required to state the position they thought the keys were being shaken at, incorrect and correct localisations were then recorded by the scorer in a table. This was then repeated for the remaining positions and results were recorded. Participant was then asked to relax before beginning the second condition. In the second condition, the participant was instructed to distort their pinnae, by pinching in the top and the middle of the outer ear, whilst making sure that the ear canal was not covered, whilst still closing their eyes and maintaining no head movement. The sequence of keys being shaken was then carried out and results were recorded. The third condition required the participant to keep