Continuous changes in electroencephalographic topograms and auditory reaction time during simulated 21 ATA(atmospheres absolute) heliox saturation dives.

Pulmonary functions during saturation-excursion dives breathing air.

Blood nitrogen tensions of seals during simulated deep dives.

KOOYMAN, G. L., J. P. SCHROEDER, D. M. DENISON, D. D. HAMMOND, J. J. WRIGHT, and W. P. BERGMAN. Blood nitrogen tensions of seals during simulated deep dives. Am. J. Physiol. 223(5) : 1016-1020. 1972.-Three species of seal were subjected to a total of 65 simulated deep dives equivalent to depths ranging from 30 to 272 m (4-28.2 atm absolute (ATA)) in a hydraulic pressure chamber. Lung volume and...

Noninvasive myocardial contractility monitoring with seismocardiography during simulated dives.

OBJECTIVE To determine if bradycardia during hyperbaric exposure is accompanied by a negative influence on myocardial contractility. METHODS Accelerometer-based registration of myocardial compression waves with Seismocardiography (SCG) for noninvasive contractility monitoring. Comparative pulmonary artery (PA) catheter study (9 ICU-patients, mean = 67ys) with ejection-fraction (EF) equivalent...

The Relationship Between Reaction Time of Electrical Stapedius Reflex and Auditory Performance in Cochlear-Implanted Children

Background: A common concern in some cochlear-implanted children is the lack of desired progress in auditory and listening skills. Such a concern remains despite proper verbal processor programming, additional disabilities, and continuous participation in hearing rehabilitation programs. A more detailed assessment of pathways and centers of the auditory processing at the lower end of the brain ...

Tonic and Phasic Electroencephalographic Dynamics during Continuous Compensatory Tracking Tonic and Phasic Electroencephalographic Dynamics during Continuous Compensatory Tracking Accepted Manuscript

Tonic and phasic dynamics of electroencephalographic (EEG) activities during a continuous compensatory tracking task (CTT) were analyzed using time-frequency analysis of EEG sources identified by independent component analysis (ICA). In one-hour sessions, 70-channel EEG data were recorded while participants attempted to use frequent compensatory trackball movements to maintain a drifting disc c...