Dean H Crowell

Learn More
OBJECTIVE To determine the relationship between recorded head accelerations and impact locations and acute clinical outcome of symptomatology, neuropsychological, and postural stability tests after cerebral concussion in Division I collegiate football players. METHODS A prospective field study was used in which accelerometers were embedded in the football(More)
OBJECTIVE It has been speculated that a theoretical injury threshold of 70 to 75 g may exist for concussions in football players. We aimed to investigate acute balance and neurocognitive performance after head impacts exceeding a theoretical injury threshold in the absence of both self-reported symptoms and a concussion diagnosis 24 hours before testing. (More)
CONTEXT Home monitors designed to identify cardiorespiratory events are frequently used in infants at increased risk for sudden infant death syndrome (SIDS), but the efficacy of such devices for this use is unproven. OBJECTIVE To test the hypothesis that preterm infants, siblings of infants who died of SIDS, and infants who have experienced an idiopathic,(More)
Infant polysomnography (IPSG) is an increasingly important procedure for studying infants with sleep and breathing disorders. Since analyses of these IPSG data are subjective, an equally important issue is the reliability or strength of agreement among scorers (especially among experienced clinicians) of sleep parameters (SP) and sleep states (SS). One(More)
Auditory responsivity in term small for gestational age (SGA) compared to term appropriate for gestational age (AGA) human newborns reflects functional differences which may be attributable to intrauterine growth retardation (IUGR). Between-group comparisons of percent of responses of averaged late component auditory evoked events (AEEs) to pure tone(More)
Sleep monitoring at 3 months post term of clinically normal term infants, pre-term infants with no demonstrable pathologic clinical signs, and pre-term and term infants with a history of metabolic disorders show that these infants have EEG sleep stages resembling those seen in adults, as well as the adult pattern of sleep stage organization. The presence of(More)
Autoregressive analysis, a statistical technique for detecting changes in electroencephalic (EEG) and heart rate (HR) data was compared with clinical behavioral audiometric results on 10 hearing-impaired children in schools for the hard of hearing and deaf. EEG and HR data were collected in a screening paradigm involving tones of .5, 1, and 4 kc/s at 80 db(More)