Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"Auditory evoked potential"”.
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Operant conditioning of auditory evoked potential amplitude in humans : the role of non-associative and myogenic factors
The operant conditioning of human scalp recorded evoked potentials was investigated in the absence of electromyographic (EMG) artifact and non-associative factors. One subject was trained to decrease the Nl-P2 amplitude of the auditory evoked potential and three subjects were trained to increase …
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Manatee Sound Localization: Performance Abilities, Interaural Level Cues, and Usage of Auditory Evoked Potential Techniques to Determine Sound Conduction Pathways
… the subjects as compared to in front of them. Auditory evoked potential (AEP) techniques were used to map manatee sound conduction pathways in-water and in-air using 15 and 24 kHz carriers. All subjects produced AEPs at each position the transducer was placed, however specific sound conduction …
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Electrophysiological and behavioural measures of central auditory processing in adult cochlear implant users
… aimed to determine the relationship between auditory evoked potential measures, speech perception and frequency discrimination in 12 experienced adult cochlear implant (CI) users and to compare the evoked potential results in the CI subjects to those of a group of age- and gender-matched …
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The amplitude-modulation-following response as an audiometric tool
… response (AMFR) is a sinusoidal auditory-evoked potential recorded to continuous, sinusoidally amplitude-modulated tones. Kuwada, et al. (1986) defined the AMFR and argued its audiometric utility. The current study consisted of four experiments designed to demonstrate the utility …
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Multimodal neuroimaging with simultaneous electroencephalogram and high-field functional magnetic resonance imaging
… tool in functional neuroimaging with the potential to reveal new mechanisms for brain function by combining the high spatial resolution of fMRI with the high temporal resolution of EEG. Applications for this technique include studies of sleep, epilepsy, and anesthesia, as well as basic …
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Tinnitus and Decreased Subcortical and Cortical Inhibition
… reduction in inhibitory function in the central auditory nervous system. Evidence, primarily from invasive studies of animal models of tinnitus, indicates that these changes occur at both the subcortical and cortical level. Auditory evoked potential (AEP) indices of subcortical inhibition …
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Auditory brainstem and middle-latency responses with optimized stimuli: experiments and models
… role of cochlear processing for the formation of auditory brainstem and middle latency responses (ABR and MLR). The main emphasis is put on the development and evaluation of an optimized (chirp) stimulus based on the concept of compensation for travel time differences along the basilar membrane. …
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Cognitive Functioning of Male Adult Children of Alcoholics and Control Subjects While Under the Influence of Acute Alcohol Intoxication
… in addition to certain components of the auditory evoked potential, supporting speculation that biological or psychological markers exist as predictors of future alcoholism. The present study examined 20 males ACA and 20 male control subjects under either placebo or alcohol experimental …
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Independent component analysis and source analysis of auditory evoked potentials for assessment of cochlear implant users
Source analysis of the Auditory Evoked Potential (AEP) has been used before to evaluate the maturation of the auditory system in both adult and children; in the same way, this technique could be applied to ongoing EEG recordings, in response to acoustic specific frequency stimuli, from children …
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Effects of Exposure to Perinatal Ultrasound Radiation on Information Processing in the Auditory System
… and motor response. Finally, a brainstem auditory evoke potential test was given to track auditory threshold and appropriate neural firing at various auditory nuclei. Postnatally US exposed rats showed a decreased acoustic startle response and prenatally exposed rats exhibited a speeding …
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Electrophysiologic detection of the neurotoxic effects of acrylamide and 2,5-hexanedione in rats
Brain stem auditory evoked potentials (BAEP) and somatosensory evoked potentials (SEP), recorded from subcutaneously placed electrodes in anesthetized rats, were used to detect the neurotoxic effects of acrylamide and 2,5-hexanedione. Sixty adult male rats were equally divided into four groups: …
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Employing the Acoustic Change Complex for Vowel Discrimination
… within an acoustic stream evokes the cortical potential known as the acoustic change complex (ACC). The present study addressed the effects of level and vowel contrast type on ACC amplitudes and latencies. Nineteen normally hearing adults were tested with vowel tokens, /a/, /i/, /o/, and /u/, …
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Early and Late Stage Mechanisms for Vocalization Processing in the Human Auditory System
The human auditory system is able to rapidly process incoming acoustic information, actively filtering, categorizing, or suppressing different elements of the incoming acoustic stream. Vocalizations produced by other humans (conspecifics) likely represent the most ethologically-relevant sounds …
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The Interaction of Intensity and Deviance on Auditory Event-Related Potentials: Findings Using Principal Component Analysis (PCA) of Current Source Densities (CSDs)
… studies investigating the loudness-dependency of auditory evoked potential (LDAEP) have shown a relationship between the intensity of an auditory stimulus and neuro-physiological or -chemical activity of the primary auditory cortex. Unfortunately, these two bodies of literature remain disjointed. …
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Electrophysiological Correlates of Cognitive Processing in Adolescents Reporting Psychotic-Like Experiences
… for use with EEG. These tasks were an Active Auditory Oddball Task, an Implicit Spatial Memory Task and a Spatial Working Memory Task. The present thesis is the first study to examine resting state data and the electrophysiological correlates of auditory and spatial processing in adolescents …
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State-space modeling of MEG time series
… neural activity using MEG recordings made in evoked-potential studies, in which the subject is repeatedly presented with a stimulus and only the stimulus effect is of interest. In contrast with other dynamic source-localization techniques, StimEM accepts arbitrary description of neural …