ERIC Number: ED335159
Record Type: RIE
Publication Date: 1991-Apr
Reference Count: N/A
Newborns' Head Orientation toward Sounds Within Hemifields.
Fenwick, Kimberley; And Others
This experiment examined the accuracy with which newborn infants orient their heads toward a sound positioned off midline within hemifields. The study also evaluated newborns' ability to update the angle of their head turn to match a change in localization of an ongoing sound. Alert newborns were held in a supine position and presented a sound at 36, 54, 72, or 90 degrees relative to midline. On shift trials, after a head turn, the sound moved to a new loudspeaker location within the same hemifield. On no-shift trials, the sound remained at one location throughout the trial. Measurement of the incidence and angle of first and adjustment head turns indicated more adjustments on shift than no-shift trials. The magnitude of error of localization increased as the sound moved off midline. Infants tended to undershoot rather than overshoot the actual location of the sound source when making a head turn. These results suggest that newborns not only discriminate sound direction but have some capacity to localize sounds. (BC)
Publication Type: Reports - Research; Speeches/Meeting Papers
Education Level: N/A
Authoring Institution: N/A
Identifiers: Head Movements; Lateral Awareness
Note: Paper presented at the Biennial Meeting of the Society for Research in Child Development (Seattle, WA, April 18-20, 1991).