Continuous Brainstem Auditory Evoked Potential Monitoring During Nocturnal Sleep

Litscher, Gerhard

doi:10.3109/00207459508994297

Cited by 18 publications

(4 citation statements)

References 20 publications

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“…One parent declined the procedure, and poor signal quality or recording problems (e.g., persistent 60 cycle noise, lack of infant sleep state, motor artifact, or electrical interference from household sources that could not be determined) resulted in inability to collect complete data (i.e., two trials of 2,048 stimuli presentations per ear) at 22 of the visits, resulting in 47 infants with BAEP data. Axillary temperature was recorded for each infant at the start of the visit because of an existing known relation between body temperature and BAEP conductance (Bastuji, Larrea, Bertrand, & Mauguiere, 1988; Litscher, 1995). Infants on whom BAEP data could and could not be collected did not differ on birth characteristics (e.g., birth weight, gestational age, and delivery method), sex, or Dubowitz cluster scores.…”

Section: Resultsmentioning

confidence: 99%

Prenatal Antecedents of Newborn Neurological Maturation

et al. 2010

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Fetal neurobehavioral development was modeled longitudinally using data collected at weekly intervals from 24-to -38 weeks gestation in a sample of 112 healthy pregnancies. Predictive associations between 3 measures of fetal neurobehavioral functioning and their developmental trajectories to neurological maturation in the 1st weeks after birth were examined. Prenatal measures included fetal heart rate variability, fetal movement, and coupling between fetal motor activity and heart rate patterning; neonatal outcomes include a standard neurologic examination (n = 97) and brainstem auditory evoked potential (BAEP; n = 47). Optimality in newborn motor activity and reflexes was predicted by fetal motor activity; fetal heart rate variability and somaticcardiac coupling predicted BAEP parameters. Maternal pregnancy-specific psychological stress was associated with accelerated neurologic maturation."If we pursue our quest beyond the newborn period, we find ourselves suddenly in an entirely new situation, where our organism is not seen, nor scarcely felt nor heard. Our environmental situation has become, if not at once more complex, at least to be likened to the postnatal environment only with great difficulty" (Sontag & Richards, 1938, p. 1).While the last decade has been marked by increasing appreciation of the role of the prenatal environment in providing the substrate for postnatal health and development, recognition of the continuous nature of human development from conception was evident in the earliest publications of the Fels Research Institute, established in 1929. Since that time, many of the core interests of developmental psychology concerning development and expression of individual differences and the moderating role of early environmental influences have begun to converge with epidemiologic methodology. The construct of "fetal programming" has been applied broadly to represent discoveries of prenatal influences on postnatal functioning, typically in adulthood (Barker, 2006;O'Brien, Wheeler, & Barker, 1999;Young, 2002). While this approach has generated an enormous body of data, thereby sparking great interest in the prenatal period, most studies rely on readily available data sources, such as birth weight, that provide only vague proxy for the gestational environment and can offer little information about mechanisms mediating observed associations.A second, more direct, approach is to measure function during the prenatal period to evaluate its role as the foundation for postnatal function. This permits measurement of a single construct and allows determination of how early experiences or exposures might affect the latter via their influence on the former. Technological advances available only after the dissolution of the Fels Institute have made clear that by the end of gestation developmental parameters that are measured extensively in the neonate and infant, and are integral to theories of development, originate at neither term nor with birth (Als, 1982; Prechtl, 1984). The view that fetal neurob...

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Section: Resultsmentioning

confidence: 99%

Prenatal Antecedents of Newborn Neurological Maturation

et al. 2010

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“…BAEPs were recorded with a multivariable monitoring system according to standard procedures (Litscher, Pfurtscheller, Kurz & Fritsch, 1986;Litscher, 1995;Reiterer, Litscher, Kurz, Haidmayer & Pfurtscheller, 1989). Acoustic stimulation was performed with alternating clicks with a duration of 0.2 ms.…”

Section: Patient and Methodsmentioning

confidence: 99%

Abnormal Brain Stem Auditory Evoked Potentials in a Girl with the Central Alveolar Hypoventilation Syndrome

Litscher¹,

Schwarz²,

Reimann

1996

International Journal of Neuroscience

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“…Bei allen Probanden waren die ersten fünf Komponenten der FAEP isoliert und reproduzierbar ableitbar und entsprachen den konventionellen Normkriterien [7,9]. Ein Beispiel ist in der Abbildung 3 dargestellt.…”

Section: Ergebnisseunclassified

Lasernadelstimulation unter Normkonditionen und Tinnitus. Erste computergestützte Untersuchungen mit sehr frühen akustisch evozierten Potenzialen

Litscher¹,

Wang²,

Schwarz³

et al. 2006

Schweiz Z Ganzheitsmed

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Zielsetzung: Untersuchung der Effekte der Lasernadelstimulation (LNS) auf sehr frÜhe (SFAEP) und frÜhe (FAEP) akustisch evozierte Potenziale, die bislang weder an Normkollektiven noch unter pathologischen Bedingungen, wie etwa Tinnitus, untersucht wurden. Studien-Design: Die Potenziale wurden bei 23 gesunden Probanden und bei einer 21 Jahre alten Patientin mit Tinnitus unter Ruhebedingungen sowie wÄhrend kontinuierlicher und frequenzmodulierter LNS im Meatus acusticus externus untersucht. Material und Methoden: Über einen neu entwickelten Ohr-Adapter wurde mittels LNS (685 nm, 4 × 30–40 mW, Dauer 10 min, 4 × 2,3 kJ/cm²) der Bereich des Äußeren GehÖrgangs stimuliert. Beurteilt wurden die Amplituden der SFAEP sowie jene des Summenaktionspotenzials des HÖrnervs (Welle I) und des IV/V-Komplexes. Ergebnisse: Die SFAEP waren sowohl wÄhrend kontinuierlicher (p = 0,019) als auch wÄhrend frequenzmodulierter (p = 0,014) LNS gegenÜber der Kontrollmessung im Sinne einer positiv gerichteten Zunahme der Amplituden der Reizantworten signifikant verÄndert. Schlussfolgerungen: Die LNS fÜhrt zu reproduzierbaren Alterationen der SFAEP. Eine eindeutige kausale Zuordnung ist derzeit noch nicht mÖglich. Thermische Effekte auf die Mittelohrmechanik oder Innenohrphysiologie aber auch stimulationsassoziierte EinflÜsse auf die neuronale LeitfÄhigkeit im peripheren Anteil der HÖrbahn wie etwa reizbezogene DepolarisationsvorgÄnge werden als mÖgliche ErklÄrungen fÜr den signifikanten Unterschied der Messparameter diskutiert.

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Continuous Brainstem Auditory Evoked Potential Monitoring During Nocturnal Sleep

Cited by 18 publications

References 20 publications

Prenatal Antecedents of Newborn Neurological Maturation

Prenatal Antecedents of Newborn Neurological Maturation

Abnormal Brain Stem Auditory Evoked Potentials in a Girl with the Central Alveolar Hypoventilation Syndrome

Lasernadelstimulation unter Normkonditionen und Tinnitus. Erste computergestützte Untersuchungen mit sehr frühen akustisch evozierten Potenzialen

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