A method includes adhering an audiometric device to a surface of an ear or to an ear canal, the audiometric device including an adhesive contacting the surface of the ear or the ear canal; and conducting an audiometric procedure with the audiometric device adhered to the surface of the ear or the ear canal.
Steady State Measurement And Analysis Approach To Profiling Auditory Evoked Potentials From Short-Latency To Long Latency
John David Durrant - Allison Park PA, US Abreena Iris Tlumak - North Versailles PA, US Rafael E. Delgado - Coral Gables FL, US John Robert Boston - Wexford PA, US
Assignee:
UNIVERSITY OF PITTSBURGH - OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION - Pittsburgh PA
International Classification:
A61B 5/00
US Classification:
600559
Abstract:
The present invention relates to methods and systems for profiling evoked potentials in brain electrical activity which apply steady state response concepts to analysis of longer latency responses reflective of activity of brain regions beyond the brainstem, up to an including the cortex. The use of repeated stimuli within a single analysis window produces a quasi steady-state response and permits a high-resolution spectral analysis. Response amplitudes were measured at repetition rates from 80 to below 1 Hz, using trains of repeated tone-burst stimuli. An amplitude measure introduced and defined as the harmonic sum was incorporated into the spectral power of the response carried by both the fundamental frequency, and the harmonics thereof. Additionally, time ensemble averaging can be employed to improve signal to noise ratio.
Evoked Potential Processing System With Spectral Averaging, Adaptive Averaging, Two Dimensional Filters, Electrode Configuration And Method Therefor
Ozcan Ozdamar - Miami FL Rafael E. Delgado - Miami FL
Assignee:
Intelligent Hearing Systems Corp. - Miami FL
International Classification:
A61B 504
US Classification:
128731
Abstract:
The evoked potential processing system includes, in one embodiment, a spectral averaging method. Time based, digital pre-stimulus and post-stimulus electroencephalographic (EEG) signal streams are obtained and are converted into frequency spectrum signals. A differential spectrum is obtained. The differential spectrums from a plurality of sweeps are summed. The summed differential spectrum is then converted into a time based signal stream which contains the evoked potential (EP) signal therein. The EP signal can also be obtained utilizing a two-dimensional filter. Pre- and post-stimulus EEG signal streams for a sub-group of stimuli, wherein each stimulus in a group has the same intensity or frequency, are filtered by conventional averaging or spectral differential averaging. The time based, filtered, post-stimulus EEG signal streams are placed in an array and the array is then filtered by a two-dimensional Fast Fourier Transform (FFT) filter. The array is then filtered by a mask and the masked array is then transformed into a time based format by an inverse FFT.
Isbn (Books And Publications)
Entre Logrono Y Luchana: Campanas Del General Espartero
Broward Commercial and Residential Pool Service Inc
6489 Pierce St, Hollywood, FL 33024
Rafael E. Delgado Director, Vice President, Executive Vice President
Intelligent Hearing Systems Corp Mfg Surgical/Med Instr Ret Computers/Software Whol Computer/Peripheral Coml Physical Research · Surgical & Medical Instrument Mfg