Research Topics
| Mark D HumphriesSummaryAffiliation: University of Sheffield Country: UK Publications
| Collaborators |
Detail Information
Publications
Solution methods for a new class of simple model neuronsMark D Humphries
Adaptive Behaviour Research Group, Department of Psychology, University of Sheffield, Sheffield S10 2TP, UK
Neural Comput 19:3216-25. 2007..The model was surprisingly simple yet able to accurately replicate the firing patterns of different types of cortical cell. Here, we derive a solution method that allows efficient simulation of the model...
The ventral basal ganglia, a selection mechanism at the crossroads of space, strategy, and rewardMark D Humphries
Adaptive Behaviour Research Group, Department of Psychology, University of Sheffield, S10 2TN, UK
Prog Neurobiol 90:385-417. 2010....
Dopamine-modulated dynamic cell assemblies generated by the GABAergic striatal microcircuitMark D Humphries
Adaptive Behaviour Research Group, Department of Psychology, University of Sheffield, UK
Neural Netw 22:1174-88. 2009..Such small cell assemblies forming spontaneously only in the absence of dopamine may contribute to motor control problems seen in humans and animals following a loss of dopamine cells...
Network 'small-world-ness': a quantitative method for determining canonical network equivalenceMark D Humphries
Adaptive Behaviour Research Group, Department of Psychology, University of Sheffield, Sheffield, United Kingdom
PLoS ONE 3:e0002051. 2008..However, the process of establishing an equivalent WS model is imprecise and there is a pressing need to discover ways in which this equivalence may be quantified...
Is there a brainstem substrate for action selection?M D Humphries
Adaptive Behaviour Research Group, Department of Psychology, University of Sheffield, Sheffield S10 2TP, UK
Philos Trans R Soc Lond B Biol Sci 362:1627-39. 2007..Finally, we consider the potential integration of the basal ganglia and mRF substrates for selection and suggest that they may collectively form a layered/hierarchical control system...
The brainstem reticular formation is a small-world, not scale-free, networkM D Humphries
Adaptive Behaviour Research Group, Department of Psychology, University of Sheffield, Sheffield S10 2TP, UK
Proc Biol Sci 273:503-11. 2006..We conclude that the medial RF is configured to create small-world (implying coherent rapid-processing capabilities), but not scale-free, type networks under assumptions which are amenable to quantitative measurement...
Reconstructing the three-dimensional GABAergic microcircuit of the striatumMark D Humphries
Adaptive Behaviour Research Group, Department of Psychology, University of Sheffield, Sheffield, United Kingdom
PLoS Comput Biol 6:e1001011. 2010..Our models thus intimately link striatal micro-anatomy to its dynamics, providing a biologically grounded platform for further study...
A robot model of the basal ganglia: behavior and intrinsic processingTony J Prescott
Adaptive Behavior Research Group, Department of Psychology, University of Sheffield, Sheffield, Western Bank, South Yorkshire, Sheffield S10 2TN, UK
Neural Netw 19:31-61. 2006..The model is shown to cast light on recent neurobiological findings concerning behavioral switching and sequencing...
A physiologically plausible model of action selection and oscillatory activity in the basal gangliaMark D Humphries
Adaptive Behaviour Research Group, Department of Psychology, University of Sheffield, Sheffield, S10 2TP, United Kingdom
J Neurosci 26:12921-42. 2006....
The role of intra-thalamic and thalamocortical circuits in action selectionM D Humphries
Department of Psychology, University of Sheffield, UK
Network 13:131-56. 2002..Thus, we conclude that the results are consistent with these structures having clearly defined functions in action selection...
Capturing dopaminergic modulation and bimodal membrane behaviour of striatal medium spiny neurons in accurate, reduced modelsMark D Humphries
Adaptive Behaviour Research Group, Department of Psychology, University of Sheffield Sheffield, UK
Front Comput Neurosci 3:26. 2009..More importantly, these provide a tractable framework for further study of dopamine's effects on computation by individual neurons...
Network effects of subthalamic deep brain stimulation drive a unique mixture of responses in basal ganglia outputMark D Humphries
Group for Neural Theory, Department d Etudes Cognitives, Ecole Normale Superieure, 29 rue d Ulm, 75005 Paris, France
Eur J Neurosci 36:2240-51. 2012....
A pulsed neural network model of bursting in the basal gangliaM D Humphries
Department of Psychology, University of Sheffield, UK
Neural Netw 14:845-63. 2001..Third, that a variety of dendritic processing is necessary in order to obtain the full range of bursting behaviour...
