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 20 of 20 for “"Electrical brain"”.
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Working memory training and transcranial electrical brain stimulation
… memory. Evidence has shown that transcranial electrical stimulation (tES) may be an effective tool for enhancing cognitive training and promoting transfer. In the first study, participants completed Cogmed working memory training with either active or sham transcranial random noise stimulation …
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Electrical Brain Activity and The Examinee's Level of Effort During Performance Validity Tasks
… are reported by individuals with mild Traumatic Brain Injuries. Limited studies have investigated how brain activity measured via Quantitative Electroencephalography (QEEG) relates to mental effort during cognitive tasks. The purpose of this study was to investigate electrical brain activity, as …
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Your brain on 9 volts : the specter and hype of electrical brain stimulation
The potential of electricity to improve the brain has captivated many. Electrical gadgets attract the rich and the poor, the educated and uneducated, the scientist and the charlatan. Over hundreds of years, people have tried everything from shocking away headaches with live torpedo fish, to …
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Effect of Signalization and Temporal Predictability Upon Electrical Brain Stimulation Preference in the Rat.
A vast body of data indicates that both animal and human subjects receiving unavoidable aversive stimulation prefer that these aversive events be predictable. Knapp, Kause, and Perkins (1959) originally demonstrated this preference for predictable over unpredictable unavoidable shock using rats in …
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Is Allocation of Attention Impaired in Fallers Compared to Non-Fallers? An Event-Related Potential Study
… distractors. A posterior to anterior shift in electrical brain activity was exaggerated in the faller group compared to the non-faller group when cognitively processing the visual target stimuli. This suggests differences in the way stimuli are cognitively processed and classified between …
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An Examination of Two Possible Delineations of the REMS-Consolidation Hypothesis.
… elevated temperature, increased metabolic rates, electrical brain patterns similar to those in the arousal state, and rapid eye movements. This stage has been termed "rapid eye movement sleep" (REMS), or "paradoxical sleep" (PS) due to the unusual physiological changes. Perhaps the most intriguing …
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Electrophysiological and Behavioral Working Memory Differences Between Musicians and Non-Musicians
The current study examines the P300 brainwave and working memory differences between musicians and non-musicians. Differences in aspects of recorded electrical brain activity have been used to quantify differences in updating processes of working memory possibly related to differences in amount of …
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Clinical practice in EEG-based neuromodulation : intersections with speech-language pathology.
Acquired brain injury affects millions of Americans each year. Though many individuals recover some or all of their original function, many others suffer from long-term impairments. Among the most prevalent effects of brain injury are impairments in cognitive and language function, which can have …
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Multi-Modality Assessment Of Language Function
… to the clinical gold-standard technique of electrical brain stimulation. This evaluation begins to address a clinical problem involving the insensitivity of electrical brain stimulation in language mapping of young children. Thus, our patients across all studies are a mixture of children, …
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Electrical stimulation of reward sites in the ventral tegmental area of the rat increases dopamine transmission in the nucleus accumbens as measured by in vivo microdialysis
… prior to, during, and after 15-min periods of electrical brain-stimulation at sites in the ventral tegmental area (VTA) that supported intracranial self-stimulation (ICSS). In the first experiment, both ICSS and yoked-stimulation of the VTA evoked significant increases in extracellular …
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Shuttlebox Self-Stimulation Behavior Following Intracerebral Microinjections of Morphine Into the Ventral Tegmental-Substantia.
… the rate at which rats will lever-press for electrical brain stimulation as well as decrease the current intensity required for this self-stimulation. In the shuttlebox paradigm, the animal crosses from one side of the case to the other in order to turn the current on and off. Similar doses …
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Brain circuits for the representation of subjective reward value
… reward magnitude elicited by rewarding electrical brain stimulation, fMRI as a readout of whole-brain neural activity, and local inactivation of brain structures, to identify the neural representation of subjective reward magnitude. We find that multiple brain regions are activated by …
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Parameters Characterization and Cognitive-Behavioral Effects of Transcranial Pulsed Current Stimulation
… on the neural interface” And noninvasive brain stimulation (NIBS) is becoming an interesting alternative for this interface. Transcranial pulsed current stimulation (tPCS) is emerging as an option in the field of neuromodulation as a technique that employs weak, pulsed current at different …
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Nicotine withdrawal causes transient elevations in brain stimulation reward thresholds
… the motivation to respond for rewarding electrical brain stimulation. It has been proposed that such attenuation of brain stimulation reward reflects opponent-process depression of brain reward circuitry and underlies the dysphoric symptoms of drug withdrawal in humans. In the present …
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Interactions between the cholinergic and dopaminergic system during the production of ultrasonic vocalizations in rats
… play behaviour or anticipation of rewarding electrical brain stimulation. The activities of these two mesolimbic systems were postulated to be antagonistic to each other. The current thesis is focused on the interaction of these systems indexed by emission of relevant USVs. It was …
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Neurophysiological properties of cortico-cortical evoked potentials in humans
Invasive electrical brain stimulation has been increasingly used to treat an ever wide range of neuropsychiatric disorders from Parkinson's disease to epilepsy and depression. In addition, single pulse electrical stimulation (SPES) is increasingly used to map connections between cortical areas …
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An Electroencephalogram Investigation of Two Modes of Reasoning
… use of electroencephalography (EEG) to exam the electrical brain activity associated with reasoning provides an opportunity to quantify the functional and temporal aspects of this uniquely human capability, and at the same time expand our knowledge about what a given event-related potential (ERP) …
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The effects of chronic electrical stimulation of the ventromedial hypothalamic nucleus in the rat.
… the VMH. Three hours of intermittent low level electrical stimulation were delivered three times per week for four weeks, after which the animals were monitored for another 10 days. There was a significant difference in the rate of weight gain between the VMH stimulated and the implanted control …