منابع مشابه
Sources of the scalp-recorded amplitude-modulation following response.
The scalp-recorded amplitude-modulation following response (AMFR) is gaining recognition as an objective audiometric tool, but little is known about the neural sources that underlie this potential. We hypothesized, based on our human studies and single-unit recordings in animals, that the scalp-recorded AMFR reflects the interaction of multiple sources. We tested this hypothesis using an animal...
متن کاملHuman Envelope Following Responses to Amplitude Modulation: Effects of Aging and Modulation Depth.
OBJECTIVE To record envelope following responses (EFRs) to monaural amplitude-modulated broadband noise carriers in which amplitude modulation (AM) depth was slowly changed over time and to compare these objective electrophysiological measures to subjective behavioral thresholds in young normal hearing and older subjects. DESIGN PARTICIPANTS three groups of subjects included a young normal...
متن کاملFeedback Amplitude Modulation Synthesis
A recently rediscovered sound synthesis method, which is based on feedback amplitude modulation (FBAM), is investigated. The FBAM system is interpreted as a periodically linear time-varying digital filter, and its stability, aliasing, and scaling properties are considered. Several novel variations of the basic system are derived and analyzed. Separation of the input and the modulation signals i...
متن کاملQuadrature Amplitude Modulation
The simplest type of digital modulation involves transmitting a sequence of waveforms (“symbols”) si(t) of equal durationT where eachwaveform is chosen independently from a set of M. This allows us to transmit up to b = log2(M) bits per symbol. A common sets of such symbols are those where the real and imaginary parts of the complex baseband signal are each modulated in amplitude. This known as...
متن کاملA whole head MEG study of the amplitude-modulation-following response: phase coherence, group delay and dipole source analysis.
OBJECTIVE The amplitude-modulation-following response (AMFR) is the frequency component detectable in the electroencephalogram (EEG) or magnetoencephalography (MEG) corresponding to the modulation frequency of an amplitude modulated tone used as a continuous acoustic stimulus. Various properties of the AMFR depend on modulation frequency, suggesting that different generators along the auditory ...
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ژورنال
عنوان ژورنال: Practica Oto-Rhino-Laryngologica
سال: 1996
ISSN: 1884-4545,0032-6313
DOI: 10.5631/jibirin.89.653