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Browsing University of Hertfordshire by Author "Yousif, Nada"
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An automated approach towards detecting complex behaviours in deep brain oscillations
Mace, Michael; Yousif, Nada; Naushahi, Mohammad; Abdullah-Al-Mamun, Khondaker; Wang, Shouyan; Nandi, Dipankar; Vaidyanathan, Ravi (2014-03-15)Extracting event-related potentials (ERPs) from neurological rhythms is of fundamental importance in neuroscience research. Standard ERP techniques typically require the associated ERP waveform to have low variance, be ... -
Chronic Stroke Survivors Improve Reaching Accuracy by Reducing Movement Variability at the Trained Movement Speed
Hammerbeck, Ulrike; Yousif, Nada; Hoad, Damon; Greenwood, Richard; Diedrichsen, Jörn; Rothwell, John C (2017-06-01)BACKGROUND: Recovery from stroke is often said to have "plateaued" after 6 to 12 months. Yet training can still improve performance even in the chronic phase. Here we investigate the biomechanics of accuracy improvements ... -
Dopamine Activation Preserves Visual Motion Perception Despite Noise Interference of Human V5/MT
Yousif, Nada; Fu, Richard; Abou-El-Ela Bourquin, Bilal; Bhrugubanda, Vamsee; Schultz, Simon R; Seemungal, Barry M (2016-09-07)When processing sensory signals, the brain must account for noise, both noise in the stimulus and that arising from within its own neuronal circuitry. Dopamine receptor activation is known to enhance both visual cortical ... -
The evolution of ventral intermediate nucleus targeting in MRI-guided focused ultrasound thalamotomy for essential tremor: an international multi-center evaluation
Jameel, Ayesha; Akgun, Sena; Yousif, Nada; Smith, Joely; Jones, Brynmor; Nandi, Dipankar; Bain, Peter; Gedroyc, Wladyslaw (2024-03-26)Background: The ventral intermediate nucleus (VIM) is the premiere target in magnetic resonance-guided focused ultrasound (MRgFUS) thalamotomy for tremor; however, there is no consensus on the optimal coordinates for ... -
Illusions of Self‐Motion during Magnetic Resonance ‐Guided Focused Ultrasound Thalamotomy for Tremor
Ciocca, Matteo; Jameel, Ayesha; Yousif, Nada; Patel, Neekhil; Smith, Joely; Akgun, Sena; Jones, Brynmor; Gedroyc, Wlayslaw; Nandi, Dipankar; Tai, Yen; Seemungal, Barry M.; Bain, Peter (2024-05-06)Objective: Brain networks mediating vestibular perception of self‐motion overlap with those mediating balance. A systematic mapping of vestibular perceptual pathways in the thalamus may reveal new brain modulation targets ... -
Mapping the current flow in sacral nerve stimulation using computational modelling
Yousif, Nada; Vaizey, Carolynne J; Maeda, Yasuko (2019-03-11)Sacral nerve stimulation (SNS) is an established treatment for faecal incontinence involving the implantation of a quadripolar electrode into a sacral foramen, through which an electrical stimulus is applied. Little is ... -
Modelling a permanent magnet synchronous motor in FEniCSx for parallel high-performance simulations
McDonagh, James; Palumbo, Nunzio; Cherukunnath, Neeraj; Dimov, Nikolay; Yousif, Nada (2022-07-01)There are concerns that the extreme requirements of heavy-duty vehicles and aviation will see them left behind in the electrification of the transport sector, becoming the most significant emitters of greenhouse gases. ... -
Movement speed is biased by prior experience
Hammerbeck, Ulrike; Yousif, Nada; Greenwood, Richard; Rothwell, John C; Diedrichsen, Jörn (2014-01-01)How does the motor system choose the speed for any given movement? Many current models assume a process that finds the optimal balance between the costs of moving fast and the rewards of achieving the goal. Here, we show ... -
A Network Model of Local Field Potential Activity in Essential Tremor and the Impact of Deep Brain Stimulation
Yousif, Nada; Mace, Michael; Pavese, Nicola; Borisyuk, Roman; Nandi, Dipankar; Bain, Peter (2017-01-09)Essential tremor (ET), a movement disorder characterised by an uncontrollable shaking of the affected body part, is often professed to be the most common movement disorder, affecting up to one percent of adults over 40 ... -
The peri-electrode space is a significant element of the electrode-brain interface in deep brain stimulation : a computational study
Yousif, Nada; Bayford, Richard; Bain, Peter G; Liu, Xuguang (2007-10-19)Deep brain stimulation (DBS) is an increasingly used clinical treatment for various neurological disorders, particularly movement disorders such as Parkinson's disease. However, the mechanism by which these high frequency ... -
A population model of deep brain stimulation in movement disorders from circuits to cells
Yousif, Nada; Bain, Peter G; Nandi, Dipankar; Borisyuk, Roman (2020-03-05)For more than 30 years, deep brain stimulation (DBS) has been used to target the symptoms of a number of neurological disorders and in particular movement disorders such as Parkinson's disease (PD) and essential tremor ... -
Reversing the polarity of bipolar stimulation in deep brain stimulation for essential tremor : a theoretical explanation for a useful clinical intervention
Yousif, Nada; Pavese, Nicola; Naushahi, Mohammad J; Nandi, Dipankar; Bain, Peter G (2014-01-02)The quadripolar electrodes used for deep brain stimulation are designed to give flexibility in contact configuration, optimize therapeutic effect, and minimize side-effects. A patient with essential tremor did not tolerate ...