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Neuropediatrics 1970; 2(1): 79-97
DOI: 10.1055/s-0028-1091842
Original article

© 1970 by Thieme Medical Publishers, Inc.

Sensory-Vocal Studies of a Twin Pair with Cephalic Union

P. Peltzman, P. F. Ostwald, C. L. Yeager, D. Manchester
  • Department of Otolaryngology, University of California San Francisco Medical Center, and Langley Porter Neuropsychiatric Institute
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Publication History

1970

1970

Publication Date:
18 November 2008 (online)

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Abstract

Quantitative assessment of sensory and vocal development of a craniopagus twin-pair was obtained through auditory and visual evoked responses which were suspplemented by period analysis of the recorded infant EEG. Sonographic and long term spectral analyses of infant cries were also performed. The results indicated that averaged evoked activity was independently obtained from each infant. Period analysis of the infant EEG recorded during stimulus (signal) and control (no signal) conditions seemed useful as a subsidiary measure in confirming the presence or absence of averaged evoked responses. Initial analysis of twin vocal behavior revealed features characteristic of CNS involvement and distinguishable inter-twin differences in pattern and distribution of number, duration, and overall amplitude of cries. By contrast, similar measures repeated at a later time in development showed an absence of features associated with CNS disturbance and a greater similarity between the distribution, duration, and amplitude measures among twins. The possibility that early cry behavior may reflect the effects of learning is suggested.

Zusammenfassung

Dieses ist eine detaillierte Studie über die sensorische und vokale Entwicklung eines Craniophagen-Paares mit Ableitung von akustischen sowie visuellen evozierten Potentialen, statistischer EEG-Analyse und einer Spektralanalyse des Schreiens. Die evozierten Potentiale wurden bei jedem der beiden Kinder unabhängig voneinander abgeleitet. Die evozierten Potentiale waren von der EEG-Hintergrundaktivitat abhängig, dessen Analyse beschrieben und dessen Bedeutung für die Verarbeitung sensorischer Reize dargelegt wird. Die Eigenart des Schreiens der beiden Kinder könnte für bestimmte Dysfunktionen des Nervensystems charakteristisch gewesen sein. Das spätere Schreiverhalten des Craniophagen-Paares zeigte Erscheinungen der Adaptation aneinander und kännte Lernprozesse anzeigen.

Keyword

Twin-study - Evoked responses - EEG - Infant cry

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