Masud Husain

Summary

Affiliation: Imperial College
Country: UK

Publications

  1. ncbi request reprint Impaired spatial working memory across saccades contributes to abnormal search in parietal neglect
    M Husain
    Division of Neuroscience and Psychological Medicine, Imperial College School of Medicine, Charing Cross Hospital Campus, London, UK
    Brain 124:941-52. 2001
  2. ncbi request reprint Non-spatially lateralized mechanisms in hemispatial neglect
    Masud Husain
    Imperial College, Division of Neuroscience and Psychological Medicine, Charing Cross Hospital, London W6 8RF, UK
    Nat Rev Neurosci 4:26-36. 2003
  3. ncbi request reprint Self-control during response conflict by human supplementary eye field
    Masud Husain
    Imperial College, Division of Neuroscience and Psychological Medicine, Charing Cross Hospital, London W6 8RF, UK
    Nat Neurosci 6:117-8. 2003
  4. ncbi request reprint Revisiting previously searched locations in visual neglect: role of right parietal and frontal lesions in misjudging old locations as new
    Sabira K Mannan
    Division of Neuroscience and Psychological Medicine, Imperial College London, London, UK
    J Cogn Neurosci 17:340-54. 2005
  5. ncbi request reprint Spatial working memory capacity in unilateral neglect
    Paresh Malhotra
    Division of Neuroscience, Imperial College, Charing Cross Hospital Campus, London W6 8RF, UK
    Brain 128:424-35. 2005
  6. ncbi request reprint Impaired spatial working memory: one component of the visual neglect syndrome?
    Paresh Malhotra
    Division of Neuroscience and Psychological Medicine, Imperial College London, Charing Cross, Hospital Campus, London, UK
    Cortex 40:667-76. 2004
  7. pmc The hippocampus is required for short-term topographical memory in humans
    Tom Hartley
    Institute of Cognitive Neuroscience, UCL, London, UK
    Hippocampus 17:34-48. 2007
  8. pmc Prism adaptation aftereffects in stroke patients with spatial neglect: pathological effects on subjective straight ahead but not visual open-loop pointing
    Margarita Sarri
    UCL Institute of Cognitive Neuroscience, University College London, 17 Queen Square, London, WC1N 3AR, UK
    Neuropsychologia 46:1069-80. 2008
  9. pmc Role of right posterior parietal cortex in maintaining attention to spatial locations over time
    Paresh Malhotra
    UCL Institute of Cognitive Neuroscience, London, UK
    Brain 132:645-60. 2009
  10. ncbi request reprint The anatomy of visual neglect
    Dominic J Mort
    Division of Neuroscience and Psychological Medicine, Imperial College, London, UK
    Brain 126:1986-97. 2003

Detail Information

Publications66

  1. ncbi request reprint Impaired spatial working memory across saccades contributes to abnormal search in parietal neglect
    M Husain
    Division of Neuroscience and Psychological Medicine, Imperial College School of Medicine, Charing Cross Hospital Campus, London, UK
    Brain 124:941-52. 2001
    ..These proposals accord with recent electrophysiological and functional imaging data, demonstrating posterior parietal involvement in the retention of target locations across saccades...
  2. ncbi request reprint Non-spatially lateralized mechanisms in hemispatial neglect
    Masud Husain
    Imperial College, Division of Neuroscience and Psychological Medicine, Charing Cross Hospital, London W6 8RF, UK
    Nat Rev Neurosci 4:26-36. 2003
  3. ncbi request reprint Self-control during response conflict by human supplementary eye field
    Masud Husain
    Imperial College, Division of Neuroscience and Psychological Medicine, Charing Cross Hospital, London W6 8RF, UK
    Nat Neurosci 6:117-8. 2003
  4. ncbi request reprint Revisiting previously searched locations in visual neglect: role of right parietal and frontal lesions in misjudging old locations as new
    Sabira K Mannan
    Division of Neuroscience and Psychological Medicine, Imperial College London, London, UK
    J Cogn Neurosci 17:340-54. 2005
    ..When combined with a spatial bias to the right, such deficits might explain why many neglect patients often re-examine rightward locations, at the expense of items to their left...
  5. ncbi request reprint Spatial working memory capacity in unilateral neglect
    Paresh Malhotra
    Division of Neuroscience, Imperial College, Charing Cross Hospital Campus, London W6 8RF, UK
    Brain 128:424-35. 2005
    ..These findings demonstrate that an impairment in SWM capacity can contribute to the neglect syndrome in patients with stroke involving regions within the right parietal lobe and insula...
  6. ncbi request reprint Impaired spatial working memory: one component of the visual neglect syndrome?
    Paresh Malhotra
    Division of Neuroscience and Psychological Medicine, Imperial College London, Charing Cross, Hospital Campus, London, UK
    Cortex 40:667-76. 2004
    ..When his recovery was tracked over several months, his SWM deficit and left neglect showed concurrent improvements. We argue that impaired SWM may be one important component of the visual neglect syndrome...
  7. pmc The hippocampus is required for short-term topographical memory in humans
    Tom Hartley
    Institute of Cognitive Neuroscience, UCL, London, UK
    Hippocampus 17:34-48. 2007
    ....
  8. pmc Prism adaptation aftereffects in stroke patients with spatial neglect: pathological effects on subjective straight ahead but not visual open-loop pointing
    Margarita Sarri
    UCL Institute of Cognitive Neuroscience, University College London, 17 Queen Square, London, WC1N 3AR, UK
    Neuropsychologia 46:1069-80. 2008
    ..Future studies of possible rehabilitative impact from prisms upon neglect may need to consider carefully how to measure prism adaptation per se, separately from any impact of such adaptation upon manifestations of neglect...
  9. pmc Role of right posterior parietal cortex in maintaining attention to spatial locations over time
    Paresh Malhotra
    UCL Institute of Cognitive Neuroscience, London, UK
    Brain 132:645-60. 2009
    ....
  10. ncbi request reprint The anatomy of visual neglect
    Dominic J Mort
    Division of Neuroscience and Psychological Medicine, Imperial College, London, UK
    Brain 126:1986-97. 2003
    ..Instead, our results implicate the angular gyrus and parahippocampal region in this role...
  11. ncbi request reprint Space re-exploration in hemispatial neglect
    Andrew Parton
    Centre for Cognition and Neuroimaging, Brunel University, Uxbridge, London, UK
    Neuroreport 17:833-6. 2006
    ..Finally, manipulating the visual salience of found targets altered the degree of neglect, but not revisit rates. Space exploration appears to be modulated both by the ability to keep track of spatial locations and by stimulus salience...
  12. ncbi request reprint Noradrenergic modulation of space exploration in visual neglect
    Paresh A Malhotra
    Division of Neuroscience, Imperial College London, Charing Cross Hospital, London W6 8RF, UK
    Ann Neurol 59:186-90. 2006
    ..The results suggest that neuropharmacological targeting of intact frontal areas might be one way to enhance cognitive function after damage to posterior brain regions in selected individuals...
  13. pmc Exaggerated object affordance and absent automatic inhibition in alien hand syndrome
    Jennifer McBride
    Institute of Cognitive Neuroscience, University College London, Alexandra House, London, UK
    Cortex 49:2040-54. 2013
    ..Taken together, these findings suggest that grasping behaviours in AHS may result from exaggerated object affordance effects, which might potentially arise from disrupted inhibition of automatically evoked responses. ..
  14. pmc Spatial remapping of the visual world across saccades
    Paul M Bays
    Institute of Cognitive Neuroscience, Institute of Neurology, University College London, Queen Square, London, UK
    Neuroreport 18:1207-13. 2007
    ..Instead, we consider a novel perspective in which the primary function of spatial remapping is to support three key nonperceptual processes: action control, sensorimotor adaptation and spatial memory...
  15. pmc The precision of visual working memory is set by allocation of a shared resource
    Paul M Bays
    UCL Institute of Cognitive Neuroscience and UCL Institute of Neurology, London, UK
    J Vis 9:7.1-11. 2009
    ..These results demonstrate that visual working memory consists of a common resource distributed dynamically across the visual scene, with no need to invoke an upper limit on the number of objects represented...
  16. pmc Attention deficits following ADEM ameliorated by guanfacine
    Victoria Singh-Curry
    UCL Institute of Cognitive Neuroscience, 17 Queen Square, London, WC1N 3AR, UK
    J Neurol Neurosurg Psychiatry 82:688-90. 2011
    ..Guanfacine may prove to be a useful tool in the treatment of disorders of attention associated with neurological conditions...
  17. pmc Binding deficits in memory following medial temporal lobe damage in patients with voltage-gated potassium channel complex antibody-associated limbic encephalitis
    Yoni Pertzov
    Institute of Neurology, University College London, London, UK
    Brain 136:2474-85. 2013
    ..Our novel behavioural measures also have the potential to assist in monitoring response to treatment in patients with memory disorders, such as those with voltage-gated potassium channel complex antibody limbic encephalitis. ..
  18. doi request reprint Functional role of the supplementary and pre-supplementary motor areas
    Parashkev Nachev
    Institute of Cognitive Neuroscience and Institute of Neurology, University College London, Alexandra House, 17 Queen Square, London, WC1N 3AR, UK
    Nat Rev Neurosci 9:856-69. 2008
    ..However, theories regarding their function vary widely. This Review brings together the data regarding the supplementary motor regions, highlighting outstanding issues and providing new perspectives for understanding their functions...
  19. ncbi request reprint Supplementary eye field contributions to the execution of saccades to remembered target locations
    Clive R Rosenthal
    Imperial College London, London, UK
    Prog Brain Res 171:419-23. 2008
    ..These results provide evidence of a causal role for the SEF in oculomotor control in the absence of visual feedback...
  20. pmc Space and the parietal cortex
    Masud Husain
    Institute of Cognitive Neuroscience, University College, London, 17 Queen Square, London WC1N 3AR, UK
    Trends Cogn Sci 11:30-6. 2007
    ....
  21. ncbi request reprint Disorders of visual attention and the posterior parietal cortex
    Parashkev Nachev
    Division of Neuroscience and Psychological Medicine, Imperial College London, London, UK
    Cortex 42:766-73. 2006
    ..In this review, we discuss the evidence for such a proposal and suggest that a better understanding of human parietal syndromes may emerge from considering both the spatial and non-spatial functions of this region...
  22. pmc Conflict in object affordance revealed by grip force
    Jennifer McBride
    Institute of Cognitive Neuroscience and Institute of Neurology, University College London, London, UK
    Q J Exp Psychol (Hove) 65:13-24. 2012
    ..Recording continuous grip force, as here, provides a sensitive way to measure coactivated responses in affordance tasks...
  23. ncbi request reprint Volition and eye movements
    Parashkev Nachev
    Department of Clinical Neuroscience, Imperial College London, and Institute of Cognitive Neuroscience, UCL, London, UK
    Prog Brain Res 171:391-8. 2008
    ..We suggest that this task may be useful in probing deficits in voluntary action in pathological states...
  24. ncbi request reprint Eye movements as a probe of attention
    Albert Hoang Duc
    Institute of Neurology and Institute of Cognitive Neuroscience, UCL, London, UK
    Prog Brain Res 171:403-11. 2008
    ..Finally, we consider how one supposedly crucial role of attention--that of binding features which belong to an object--might operate so that object representations are veridically maintained and remapped across eye movements...
  25. ncbi request reprint Differential cortical activation during voluntary and reflexive saccades in man
    Dominic J Mort
    The Neuro ophthalmology Group, Division of Neuroscience and Psychological Medicine, Faculty of Medicine, Imperial College, Charing Cross Campus, St Dunstan s Road, London W6 8RP, UK
    Neuroimage 18:231-46. 2003
    ....
  26. ncbi request reprint Active tool use with the contralesional hand can reduce cross-modal extinction of touch on that hand
    Angelo Maravita
    Institute of Cognitive Neuroscience, University College London and Imperial College School of Medicine, London, UK
    Neurocase 8:411-6. 2002
    ..This can then overcome competition between stimuli presented on opposite sides of the body midline, thus modulating extinction...
  27. pmc A new method for automated high-dimensional lesion segmentation evaluated in vascular injury and applied to the human occipital lobe
    Yee Haur Mah
    Institute of Neurology, UCL, London, UK
    Cortex 56:51-63. 2014
    ....
  28. pmc The effects of the dopamine agonist rotigotine on hemispatial neglect following stroke
    Nikos Gorgoraptis
    UCL Institute of Neurology and the National Hospital for Neurology and Neurosurgery, Queen Square, London, UK
    Brain 135:2478-91. 2012
    ..This proof-of-concept study suggests a beneficial role of dopaminergic modulation on visual search and selective attention in patients with hemispatial neglect following stroke...
  29. ncbi request reprint Neuropharmacological modulation of cognitive deficits after brain damage
    Andrew Parton
    Imperial College, Division of Neuroscience and Mental Health, Charing Cross Hospital, and Institute of Cognitive Neuroscience, University College London, London, UK
    Curr Opin Neurol 18:675-80. 2005
    ..This review discusses recent studies that have implications for potential neuropharmacological interventions which target cognitive deficits resulting from traumatic brain injury or stroke...
  30. pmc Storage and binding of object features in visual working memory
    Paul M Bays
    UCL Institute of Cognitive Neuroscience and Institute of Neurology, Queen Square, London, UK
    Neuropsychologia 49:1622-31. 2011
    ....
  31. ncbi request reprint Treatment of attention deficits in neurological disorders
    Elizabeth Coulthard
    Institute of Cognitive Neuroscience, University College London, London, UK
    Curr Opin Neurol 19:613-8. 2006
    ..Here we discuss therapeutic interventions that have been used across a range of conditions, highlighting common themes both in the nature of the attention deficits and the strategies employed to treat them...
  32. pmc Dopamine reverses reward insensitivity in apathy following globus pallidus lesions
    Robert Adam
    UCL Institute of Cognitive Neuroscience, London, UK
    Cortex 49:1292-303. 2013
    ..They demonstrate that reward insensitivity associated with basal ganglia dysfunction might be an important component of apathy that can be reversed by dopaminergic modulation...
  33. doi request reprint Rapid decision-making under risk
    Robert Adam
    a Institute of Cognitive Neuroscience, University College London, London, UK
    Cogn Neurosci 3:52-61. 2012
    ..The test provides a useful measure of rapid decision-making under risk, with the potential to reveal how this process alters with aging or in patient groups. ..
  34. doi request reprint Cognitive neuroscience: distinguishing self from other
    Stephanie Burnett
    UCL Institute of Cognitive Neuroscience and UCL Institute of Neurology, London, UK
    Curr Biol 21:R189-90. 2011
    ..Neurons in medial frontal cortex have been found to distinguish between whether an animal or its partner is responding on a turn-taking task, but are they really the basis of a social learning mechanism?..
  35. doi request reprint Rehabilitation in practice: Hemispatial neglect: approaches to rehabilitation
    Victoria Singh-Curry
    UCL Institute of Neurology, National Hospital for Neurology and Neurosurgery, London, UK
    Clin Rehabil 24:675-84. 2010
    ..The article focuses on hemispatial neglect as a common and difficult to manage problem in clinical practice...
  36. pmc Read-Right: a "web app" that improves reading speeds in patients with hemianopia
    Yean Hoon Ong
    UCL Multimedia, Information Services Division, University College, London, UK
    J Neurol 259:2611-5. 2012
    ....
  37. ncbi request reprint The electrophysiology of tactile extinction: ERP correlates of unconscious somatosensory processing
    Martin Eimer
    Department of Psychology, Birkbeck College, University of London, Malet Street, WC1E 7HX, London, UK
    Neuropsychologia 40:2438-47. 2002
    ..They also suggest that tactile extinction can be caused by attenuation rather than elimination of somatosensory responses in the damaged hemisphere, with an underlying deficit even on unilateral trials...
  38. ncbi request reprint The impact of extensive medial frontal lobe damage on 'Theory of Mind' and cognition
    Chris M Bird
    Institute of Cognitive Neuroscience, University College London, London, UK
    Brain 127:914-28. 2004
    ..Possible reasons for the discrepancies between our results and neuroimaging studies are discussed. We conclude that our findings urge caution against using functional imaging as the sole method of establishing cognitive neuroanatomy...
  39. ncbi request reprint Where the eye looks, the hand follows; limb-dependent magnetic misreaching in optic ataxia
    Stephen R Jackson
    School of Psychology, The University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
    Curr Biol 15:42-6. 2005
    ....
  40. ncbi request reprint Distinct cortical and collicular mechanisms of inhibition of return revealed with S cone stimuli
    Petroc Sumner
    Department of Visual Neuroscience, Division of Neuroscience, Faculty of Medicine, Imperial College London, St Dunstan s Road, London W6 8RP, UK
    Curr Biol 14:2259-63. 2004
    ..These findings represent a clear dissociation between visual orienting of attention and gaze...
  41. ncbi request reprint Attention modulates the visual field in healthy observers and parietal patients
    Charlotte Russell
    Institute of Cognitive Neuroscience, University College London, 17 Queen Square, London WC1N 3AR
    Neuroreport 15:2189-93. 2004
    ..These findings demonstrate how the effective visual field is dynamically modulated by the deployment of attention in health and, more severely, following right parieto-temporal damage...
  42. ncbi request reprint Spatiotemporal dynamics of attention in visual neglect: a case study
    Anne P Hillstrom
    Department of Psychology, George Mason University, Fairfax, VA 22030, USA
    Cortex 40:433-40. 2004
    ..Our findings demonstrate a spatial and temporal gradient of attention. The results are discussed with respect to current models of visual processing in visual neglect...
  43. ncbi request reprint Implicit processing of global information in Balint's Syndrome
    Georgina M Jackson
    Institute of Neuroscience, University of Nottingham
    Cortex 40:179-80. 2004
  44. ncbi request reprint Action control in visual neglect
    Elizabeth Coulthard
    Division of Neuroscience and Mental Health, Imperial College London and the Institute of Cognitive Neuroscience, University College London, London, United Kingdom
    Neuropsychologia 44:2717-33. 2006
    ..Thus, the action control deficits in neglect may be conceptualised as a range of impairments affecting multiple stages in the visuomotor control process...
  45. ncbi request reprint Neural correlates of conscious and unconscious vision in parietal extinction
    Geraint Rees
    Institute of Cognitive Neuroscience, University College London, 17 Queen Square, London WC1N 3AR, UK
    Neurocase 8:387-93. 2002
    ..These findings extend recent observations on visual extinction, suggesting distinct neural correlates for conscious and unconscious perception...
  46. ncbi request reprint Testing memory for unseen visual stimuli in patients with extinction and spatial neglect
    Patrik Vuilleumier
    Institute of Cognitive Neuroscience, University College London, Alexandra House, 17 Queen Square, London WC1N 3AR, UK
    J Cogn Neurosci 14:875-86. 2002
    ..These results suggest implicit but not explicit memory for extinguished visual stimuli in parietal patients...
  47. ncbi request reprint Control of visuotemporal attention by inferior parietal and superior temporal cortex
    Kimron Shapiro
    School of Psychology, University of Wales, LL57 2AS, Bangor, United Kingdom
    Curr Biol 12:1320-5. 2002
    ..We propose instead that the IPL+STG has a top-down control role, contributing to the functions of both dorsal and ventral visual systems...
  48. ncbi request reprint Priming of color and position during visual search in unilateral spatial neglect
    Arni Kristjansson
    University College London, UK
    J Cogn Neurosci 17:859-73. 2005
    ..These findings demonstrate relatively intact priming of visual search by color and location in patients with right parietal damage, and also reveal that location priming may differ from color priming in requiring awareness...
  49. ncbi request reprint Disorders of visuo-spatial cognition
    Glyn Humphreys
    School of Psychology, University of Birmingham, Division of Neuroscience, UK
    Neurocase 11:146-7. 2005
  50. pmc Role of the human supplementary eye field in the control of saccadic eye movements
    Andrew Parton
    Centre for Cognition and Neuroimaging, Brunel University, UK
    Neuropsychologia 45:997-1008. 2007
    ....
  51. ncbi request reprint The role of the posterior parietal lobe in prism adaptation: Failure to adapt to optical prisms in a patient with bilateral damage to posterior parietal cortex
    Roger Newport
    School of Psychology, University of Nottingham, Nottingham, UK
    Cortex 42:720-9. 2006
    ..The hypothesis is discussed in relation to recent disconnectionist accounts of optic ataxia...
  52. pmc Human medial frontal cortex mediates unconscious inhibition of voluntary action
    Petroc Sumner
    School of Psychology, Cardiff University, Tower Building, Park Place, Cardiff CF10 3AT, UK
    Neuron 54:697-711. 2007
    ..These findings imply that the SEF and SMA mediate automatic effector-specific suppression of motor plans. This automatic mechanism may contribute to the participation of these areas in the voluntary control of action...
  53. pmc The role of the pre-supplementary motor area in the control of action
    Parashkev Nachev
    Department of Clinical Neuroscience, Imperial College London, St Dunstan s Road, London W6 8RP, UK
    Neuroimage 36:T155-63. 2007
    ..We discuss these findings in the context of a unified framework of pre-SMA function, and explore the degree to which extant data on this region can be explained by this function alone...
  54. ncbi request reprint Hemispatial neglect, balance and eye-movement control
    Paresh Malhotra
    Institute of Cognitive Neuroscience, UCL, Queen Square, London WC1N 3AR, UK
    Curr Opin Neurol 19:14-20. 2006
    ..They lead to poor outcome and frequently coexist. Here we focus on recent progress in the understanding of the mechanisms underlying these disorders and potential therapeutic advances...
  55. ncbi request reprint The role of the ventrolateral frontal cortex in inhibitory oculomotor control
    Tim Hodgson
    Exeter Centre for Cognitive Neuroscience, School of Psychology, University of Exeter, Washington Singer Laboratories, Prince of Wales Road, Exeter EX4 4QG
    Brain 130:1525-37. 2007
    ..The critical role played by the right ventrolateral region in cognitive tasks may arise due to an additional functional specialization for the monitoring and updating of task rules...
  56. doi request reprint Bringing cognitive testing into the real world
    Elizabeth Coulthard
    J Neurol Neurosurg Psychiatry 79:363. 2008
  57. pmc Control over conflict during movement preparation: role of posterior parietal cortex
    Elizabeth J Coulthard
    Institute of Cognitive Neuroscience and Institute of Neurology, University College London, London WC1N 3AR, UK
    Neuron 58:144-57. 2008
    ....
  58. doi request reprint Diffusion tensor imaging: implications for brain disease
    Victoria Singh-Curry
    J Neurol Neurosurg Psychiatry 79:490-1. 2008
  59. pmc Impaired perceptual memory of locations across gaze-shifts in patients with unilateral spatial neglect
    Patrik Vuilleumier
    University Medical Center, Geneva, Switzerland
    J Cogn Neurosci 19:1388-406. 2007
    ....
  60. ncbi request reprint Visuomotor functions of the posterior parietal cortex
    Stephen R Jackson
    Neuropsychologia 44:2589-93. 2006
    ....
  61. ncbi request reprint Auditory deficits in visuospatial neglect patients
    Francesco Pavani
    Dipartimento di Scienze della Cognizione e della Formazione, Universita di Trento, Italy
    Cortex 40:347-65. 2004
    ....
  62. pmc Symmetries in human brain language pathways correlate with verbal recall
    Marco Catani
    Section of Brain Maturation, Department of Psychological Medicine, and Centre for Neuroimaging Sciences, Institute of Psychiatry, King s College London, London, United Kingdom
    Proc Natl Acad Sci U S A 104:17163-8. 2007
    ....
  63. pmc Enantiomorphic normalization of focally lesioned brains
    Parashkev Nachev
    Department of Clinical Neuroscience, Imperial College London, UK
    Neuroimage 39:1215-26. 2008
    ..We therefore propose that it should be the method of choice for normalizing images of focally lesioned brains...
  64. doi request reprint Human intraparietal sulcus (IPS) and competition between exogenous and endogenous saccade plans
    Elaine J Anderson
    Institute of Cognitive Neuroscience, Alexandra House, 17 Queen Square, London WC1N 3AR, UK
    Neuroimage 40:838-51. 2008
    ..Furthermore, signals recorded from the superior colliculus showed the reverse pattern of responses, consistent with a direct inhibitory influence of IPS on SC...
  65. pmc Volition and conflict in human medial frontal cortex
    Parashkev Nachev
    Department of Visual Neuroscience, Imperial College London, St Dunstan s Road, London W6 8RP, United Kingdom
    Curr Biol 15:122-8. 2005
    ..We propose a functional architecture of human medial frontal cortex that incorporates the generation of action plans and the resolution of conflict...
  66. pmc Dynamic shifts of limited working memory resources in human vision
    Paul M Bays
    Institute of Cognitive Neuroscience, University College London, 17 Queen Square, London WC1N 3AR, UK
    Science 321:851-4. 2008
    ..The proportion of resources allocated to each item determines the precision with which it is remembered, a relation that we show is governed by a simple power law, allowing quantitative estimates of resource distribution in a scene...