Comparison of reflex modification procedures and auditory brainstem response in high-risk neonates. 1991

E K Anday, and M E Cohen, and H S Hoffman
Department of Pediatrics, Hospital of the University of Pennsylvania, Philadelphia 19104.

This study compared the results of reflex modification (RM)--an objective technique for assessing brainstem sensorineural processing--with those of auditory brainstem response (ABR) for a group of high-risk infants at comparable postconceptional ages. For the RM procedure, an eyeblink-eliciting tap to the glabella was presented either alone or accompanied by a brief 90dB SPL tone. 37 high-risk infants were tested with both RM and ABR at a mean postconceptional age of 37.3 weeks. Seven had an increased brainstem conduction time ('failed ABR') and eight did not exhibit significant reflex augmentation ('failed RM'), seven of whom also failed the ABR. These data provide evidence that sensory stimuli which affect the neural mechanisms responsible for the organization of the startle response and auditory processing share essential neural components.

UI MeSH Term Description Entries
D007231 Infant, Newborn An infant during the first 28 days after birth. Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D007235 Infant, Premature, Diseases Diseases that occur in PREMATURE INFANTS.
D009460 Neurologic Examination Assessment of sensory and motor responses and reflexes that is used to determine impairment of the nervous system. Examination, Neurologic,Neurological Examination,Examination, Neurological,Examinations, Neurologic,Examinations, Neurological,Neurologic Examinations,Neurological Examinations
D012021 Reflex, Abnormal An abnormal response to a stimulus applied to the sensory components of the nervous system. This may take the form of increased, decreased, or absent reflexes. Hyperreflexia,Hyporeflexia,Abnormal Deep Tendon Reflex,Abnormal Reflex,Abnormal Reflexes,Bulbocavernosus Reflex, Decreased,Bulbocavernousus Reflex Absent,Hoffman's Reflex,Palmo-Mental Reflex,Reflex, Absent,Reflex, Acoustic, Abnormal,Reflex, Anal, Absent,Reflex, Anal, Decreased,Reflex, Ankle, Abnormal,Reflex, Ankle, Absent,Reflex, Ankle, Decreased,Reflex, Biceps, Abnormal,Reflex, Biceps, Absent,Reflex, Biceps, Decreased,Reflex, Corneal, Absent,Reflex, Corneal, Decreased,Reflex, Decreased,Reflex, Deep Tendon, Abnormal,Reflex, Deep Tendon, Absent,Reflex, Gag, Absent,Reflex, Gag, Decreased,Reflex, Knee, Abnormal,Reflex, Knee, Decreased,Reflex, Moro, Asymmetric,Reflex, Pendular,Reflex, Triceps, Abnormal,Reflex, Triceps, Absent,Reflex, Triceps, Decreased,Reflexes, Abnormal,Absent Reflex,Decreased Bulbocavernosus Reflex,Decreased Reflex,Palmo Mental Reflex,Pendular Reflex,Reflex Absent, Bulbocavernousus,Reflex, Decreased Bulbocavernosus,Reflex, Hoffman's,Reflex, Palmo-Mental
D001767 Blinking Brief closing of the eyelids by involuntary normal periodic closing, as a protective measure, or by voluntary action. Orbicularis Oculi Reflex,Reflex, Blink,Reflex, Corneal,Reflex, Orbicularis Oculi,Winking,Blink Reflexes,Corneal Reflexes,Orbicularis Oculi Reflexes,Blink Reflex,Reflexes, Blink,Reflexes, Orbicularis Oculi
D001925 Brain Damage, Chronic A condition characterized by long-standing brain dysfunction or damage, usually of three months duration or longer. Potential etiologies include BRAIN INFARCTION; certain NEURODEGENERATIVE DISORDERS; CRANIOCEREBRAL TRAUMA; ANOXIA, BRAIN; ENCEPHALITIS; certain NEUROTOXICITY SYNDROMES; metabolic disorders (see BRAIN DISEASES, METABOLIC); and other conditions. Encephalopathy, Chronic,Chronic Encephalopathy,Chronic Brain Damage
D001933 Brain Stem The part of the brain that connects the CEREBRAL HEMISPHERES with the SPINAL CORD. It consists of the MESENCEPHALON; PONS; and MEDULLA OBLONGATA. Brainstem,Truncus Cerebri,Brain Stems,Brainstems,Cerebri, Truncus,Cerebrus, Truncus,Truncus Cerebrus
D006319 Hearing Loss, Sensorineural Hearing loss resulting from damage to the COCHLEA and the sensorineural elements which lie internally beyond the oval and round windows. These elements include the AUDITORY NERVE and its connections in the BRAINSTEM. Deafness Neurosensory,Deafness, Neurosensory,Deafness, Sensoryneural,Neurosensory Deafness,Sensorineural Hearing Loss,Sensoryneural Deafness,Cochlear Hearing Loss,Hearing Loss, Cochlear,Deafnesses, Neurosensory,Deafnesses, Sensoryneural,Neurosensory Deafnesses,Sensoryneural Deafness,Sensoryneural Deafnesses
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001306 Auditory Pathways NEURAL PATHWAYS and connections within the CENTRAL NERVOUS SYSTEM, beginning at the hair cells of the ORGAN OF CORTI, continuing along the eighth cranial nerve, and terminating at the AUDITORY CORTEX. Auditory Pathway,Pathway, Auditory,Pathways, Auditory

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