Browsing by Author "Steyn-Ross, D. Alistair"
Now showing items 1-5 of 48
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An analysis of the transitions between down and up states of the cortical slow oscillation under urethane anaesthesia
(Springer Netherlands, 2010)We study the dynamics of the transition between the low- and high-firing states of the cortical slow oscillation by using intracellular recordings of the membrane potential from cortical neurons of rats. We investigate the ... -
Anesthesia-induced state transitions in neuronal populations
(Humana Press., 2010)It is a simple observation that the function of the central nervous system changes abruptly at certain critical brain concentrations of the anesthetic drug. This can be viewed as analogous to “state transitions” in systems ... -
The Bispectral Index: A measure of depth of sleep?
(LIPPINCOTT WILLIAMS & WILKINS, 1999)How does physiological sleep affect the Bispectral Index (BIS)? We collected electroencephalographic (EEG) data from five subjects during the early part of the night, comparing the changes in the BIS with the conventional ... -
Changes in frequency of seizure-like events in stimulated cortical slices
(IEEE Xplore, 2010)Epilepsy affects nearly 3 million people in the United States alone. Given the fact that many people suffer from seizures that are intractable to pharmacological intervention, research groups are investigating the use of ... -
Characteristics of temporal fluctuations in the hyperpolarized state of the cortical slow oscillation
(American Physical Society, 2008)We present evidence for the hypothesis that transitions between the low- and high-firing states of the cortical slow oscillation correspond to neuronal phase transitions. By analyzing intracellular recordings of the membrane ...
Co-authors for D. Alistair Steyn-Ross
Supervised by D. Alistair Steyn-Ross
Showing up to 5 theses - most recently added to Research Commons first.
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Investigating the dynamics of a population of spiking neurons across spatial scales
(The University of Waikato, 2021)Mean-field models describe bulk neural activity in terms of population-average action potential (spike) rates, but do not attempt to address the variations in the firing activity of individual neurons and the interactions ... -
Efficiency enhancements to a linear AC voltage regulator: Multi-transformer and multi-winding designs
(The University of Waikato, 2020)Utility companies are expected to distribute electricity that conforms with international or national standards related to RMS voltage fluctuations. However, RMS voltage variations sometimes exceed acceptable limits and ... -
Supercapacitor assisted LED (SCALED) converter technique for solar powered DC-microgrids
(The University of Waikato, 2020)Designing electronic products and systems with high energy efficiency is a major challenge for electronic power circuit designers. Almost all residential and industrial buildings are presently AC powered. However, they ... -
Predicting and identifying signs of criticality near neuronal phase transition
(The University of Waikato, 2020)This thesis examines the critical transitions between distinct neural states associated with the transition to neuron spiking and with the induction of anaesthesia. First, mathematical and electronic models of a single ... -
Theoretical and experimental investigation of anaesthetic effects in the brain
(University of Waikato, 2016)The main motivation of this study is to develop a better understanding of anaesthetic drug effects on brain dynamics including the paradoxical enhancement of seizure activity by some anaesthetic drugs. This thesis investigates ...
