Pediatrics-Neurology

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Cooing- and babbling-related gamma-oscillations during infancy: intracranial recording.

Yoshimi Cho-Hisamoto; Katsuaki Kojima; Erik C Brown; Naoyuki Matsuzaki; Eishi Asano (Profiled Author: Eishi Asano)

Department of Pediatrics, Children's Hospital of Michigan, Wayne State University, Detroit, MI 48201, USA.
Epilepsy & behavior : E&B 2012;23(4):494-6.

We determined the spatio-temporal dynamics of intracranially-recorded gamma-oscillations modulated by spontaneous cooing and babbling, which are considered to embody pre-linguistic language behaviors during infancy. Electrocorticographic (ECoG) signals were recorded from 110 cortical sites in the right hemisphere of a 10-month-old girl with focal epilepsy. Electrocorticographic signals were time-locked to the onset of cooing or babbling. The amplitudes of gamma-oscillations during vocalizations were compared to those during preceding silent reference periods. Cooing and babbling elicited significant gamma-augmentation at 30-100 Hz at distinct sites of the inferior Rolandic region, whereas both forms of vocalizations elicited gamma-augmentation at an identical superior temporal site. The spatial, temporal and spectral characteristics of gamma-augmentation elicited by cooing and babbling were similar to those elicited by phoneme vocalization in older children and adults. Differential activation within the right inferior Rolandic region during cooing and babbling may reflect the mechanical or developmental difference between these two forms of vocalizations. The right superior temporal gyrus may participate in an auditory feedback system during vocalization.

1 Originating Grant

• 1.

  ASANO, EISHI

  Functional brain mapping in pediatric neurosurgery

  1 March 2009 - 28 February 2014

  NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE

  Total Funding: $ 1,578,150

Scientific Context

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