Biomaterial Database

[Slow cortical evoked potentials after noise exposure]. 1979

H von Wedel, and H J Opitz

Human cortical evoked potentials under conditions of stimulation are registrated in the post-stimulatory phase of a five minutes lasting equally masking white noise (90 dB HL). Changes of the evoked potentials during to adaptation, possible analogy with high tone losses after noise representation and the origin of tinnitus are examined. Stimulation was started 3 sec after the off-effect of the noise. For five minutes periodically tone bursts were represented. Each train of stimulation consists of tone bursts of three frequencies: 2 kcs, 4 kcs, 8 kcs. The 0.5 sec lasting tones were separated by pauses of 2 sec. During the experiment stimulation and analysis were controlled by a computer. Changes in latency and amplitudes of the cortical evoked potentials were registered. Changes of the adaption patterns as a function of the poststimulatory time are discussed.

UI	MeSH Term	Description	Entries
D004781	Environmental Exposure	The exposure to potentially harmful chemical, physical, or biological agents in the environment or to environmental factors that may include ionizing radiation, pathogenic organisms, or toxic chemicals.	Exposure, Environmental,Environmental Exposures,Exposures, Environmental
D005072	Evoked Potentials, Auditory	The electric response evoked in the CEREBRAL CORTEX by ACOUSTIC STIMULATION or stimulation of the AUDITORY PATHWAYS.	Auditory Evoked Potentials,Auditory Evoked Response,Auditory Evoked Potential,Auditory Evoked Responses,Evoked Potential, Auditory,Evoked Response, Auditory,Evoked Responses, Auditory,Potentials, Auditory Evoked
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000161	Acoustic Stimulation	Use of sound to elicit a response in the nervous system.	Auditory Stimulation,Stimulation, Acoustic,Stimulation, Auditory
D000222	Adaptation, Physiological	The non-genetic biological changes of an organism in response to challenges in its ENVIRONMENT.	Adaptation, Physiologic,Adaptations, Physiologic,Adaptations, Physiological,Adaptive Plasticity,Phenotypic Plasticity,Physiological Adaptation,Physiologic Adaptation,Physiologic Adaptations,Physiological Adaptations,Plasticity, Adaptive,Plasticity, Phenotypic
D014012	Tinnitus	A nonspecific symptom of hearing disorder characterized by the sensation of buzzing, ringing, clicking, pulsations, and other noises in the ear. Objective tinnitus refers to noises generated from within the ear or adjacent structures that can be heard by other individuals. The term subjective tinnitus is used when the sound is audible only to the affected individual. Tinnitus may occur as a manifestation of COCHLEAR DISEASES; VESTIBULOCOCHLEAR NERVE DISEASES; INTRACRANIAL HYPERTENSION; CRANIOCEREBRAL TRAUMA; and other conditions.	Pulsatile Tinnitus,Ringing-Buzzing-Tinnitus,Spontaneous Oto-Acoustic Emission Tinnitus,Tensor Palatini Induced Tinnitus,Tensor Tympani Induced Tinnitus,Tinnitus of Vascular Origin,Tinnitus, Clicking,Tinnitus, Leudet,Tinnitus, Leudet's,Tinnitus, Noise Induced,Tinnitus, Objective,Tinnitus, Spontaneous Oto-Acoustic Emission,Tinnitus, Subjective,Tinnitus, Tensor Palatini Induced,Tinnitus, Tensor Tympani Induced,Vascular Origin Tinnitus,Clicking Tinnitus,Induced Tinnitus, Noise,Leudet Tinnitus,Leudet's Tinnitus,Noise Induced Tinnitus,Objective Tinnitus,Ringing Buzzing Tinnitus,Spontaneous Oto Acoustic Emission Tinnitus,Subjective Tinnitus,Tinnitus, Leudets,Tinnitus, Pulsatile,Tinnitus, Spontaneous Oto Acoustic Emission,Tinnitus, Vascular Origin