Katrina Dell

Sleep and seizure risk in epilepsy: bed and wake times are more important than sleep duration.

Rachel E Stirling, Cindy M Hidajat, David B Grayden, Wendyl J D'Souza, Jodie Naim-Feil, Katrina L Dell, Logan D Schneider, Ewan Nurse, Dean Freestone, Mark J Cook, Philippa J Karoly

Journal article  |  2022  |  Brain

Sleep duration, sleep deprivation and the sleep-wake cycle are thought to play an important role in the generation of epileptic ac..

Seizure likelihood varies with day-to-day variations in sleep duration in patients with refractory focal epilepsy: A longitudinal electroencephalography investigation

Katrina L Dell, Daniel E Payne, Vaclav Kremen, Matias I Maturana, Vaclav Gerla, Petr Nejedly, Gregory A Worrell, Lhotska Lenka, Filip Mivalt, Raymond C Boston, Benjamin H Brinkmann, Wendyl D'Souza, Anthony N Burkitt, David B Grayden, Levin Kuhlmann, Dean R Freestone, Mark J Cook

Journal article  |  2021  |  ECLINICALMEDICINE

BACKGROUND: While the effects of prolonged sleep deprivation (≥24 h) on seizure occurrence has been thoroughly explored, little is..

Spatiotemporal Patterns of High-Frequency Activity (80-170 Hz) in Long-Term Intracranial EEG

Zhuying Chen, David B Grayden, Anthony N Burkitt, Udaya Seneviratne, Wendyl J D'Souza, Chris French, Philippa J Karoly, Katrina Dell, Kent Leyde, Mark J Cook, Matias I Maturana

Journal article  |  2021  |  NEUROLOGY

OBJECTIVE: To determine the utility of high-frequency activity (HFA) and epileptiform spikes as biomarkers for epilepsy, we examin..

Identifying seizure risk factors: A comparison of sleep, weather, and temporal features using a Bayesian forecast

Daniel E Payne, Katrina L Dell, Phillipa J Karoly, Vaclav Kremen, Vaclav Gerla, Levin Kuhlmann, Gregory A Worrell, Mark J Cook, David B Grayden, Dean R Freestone

Journal article  |  2020  |  EPILEPSIA

OBJECTIVE: Most seizure forecasting algorithms have relied on features specific to electroencephalographic recordings. Environment..

Critical slowing down as a biomarker for seizure susceptibility.

Matias I Maturana, Christian Meisel, Katrina Dell, Philippa J Karoly, Wendyl D'Souza, David B Grayden, Anthony N Burkitt, Premysl Jiruska, Jan Kudlacek, Jaroslav Hlinka, Mark J Cook, Levin Kuhlmann, Dean R Freestone

Journal article  |  2020  |  Nature Communications

The human brain has the capacity to rapidly change state, and in epilepsy these state changes can be catastrophic, resulting in lo..

Deep Brain Stimulation for Epilepsy: Biomarkers for Optimization

Katrina L Dell, Mark J Cook, Matias I Maturana

Journal article  |  2019  |  CURRENT TREATMENT OPTIONS IN NEUROLOGY

PURPOSE OF REVIEW: Two large-scale controlled clinical trials have provided Class I evidence for the benefit of deep brain stimula..

Differences in perceptual masking between humans and rats

Katrina L De, Ehsan Arabzadeh, Nicholas SC Price

Journal article  |  2019  |  BRAIN AND BEHAVIOR

INTRODUCTION: The perception of a target stimulus can be impaired by a subsequent mask stimulus, even if they do not overlap tempo..

Human-like perceptual masking is difficult to observe in rats performing an orientation discrimination task

Katrina Louise Dell, Ehsan Arabzadeh, Nicholas Seow Chiang Price

Journal article  |  2018  |  PLOS ONE

Visual masking occurs when the perception of a brief target stimulus is affected by a preceding or succeeding mask. The uncoupling..

Progesterone Sharpens Temporal Response Profiles of Sensory Cortical Neurons in Animals Exposed to Traumatic Brain Injury

Benjamin J Allitt, Victoria PA Johnstone, Katrina L Richards, Edwin B Yan, Ramesh Rajan

Journal article  |  2017  |  CELL TRANSPLANTATION

Traumatic brain injury (TBI) initiates a cascade of pathophysiological changes that are both complex and difficult to treat. Proge..

Masking reduces orientation selectivity in rat visual cortex

Dasuni S Alwis, Katrina L Richards, Nicholas SC Price

Journal article  |  2016  |  JOURNAL OF NEUROPHYSIOLOGY

In visual masking the perception of a target stimulus is impaired by a preceding (forward) or succeeding (backward) mask stimulus...