Dr Trevor Crawford

Reader of Neuropsychology

Research Interests

  • Investigations of eye movements and neuropsychological test as diagnostic marker in Alzheimer's disease
  • Parkinson's disease, dyslexia & schizophrenia
  • Rehabilitation strategies for enhancing cognitive and motor function in Alzheimer's, Parkinson's disease
  • Eye movements and prefrontal executive systems in aging and development
  • Pharmacology of human eye movements (with Prof Deakin, Neuroscience Department, University of Manchester)
  • Negative priming, inhibitory control, working memory and executive function
  • Effects of emotion on visual attention and face perception
  • Eye movements and dyslexia
  • Visual scanning strategies in cancer detection using x-ray images

General

Our health research is primarily targeted on age-related disorders in particular Alzheimer’s disease. Parkinson's disease and Schizophrenia. We have two dedicated research laboratories at Lancaster University and an extensive network of collaboration hospitals and research centres in the north west and nationally. This research network includes research assistants, clinical psychologists, consultant neurologists, psychiatrists, radiologists and neuropsychologists at Lancaster University and Lancashire Teaching Hospitals.Alzheimer's Disease

Our current research is aimed at developing new biological markers that will help doctors to improve their diagnosis of Alzheimer’s disease. The work in Dr Crawford’s lab, which is aimed at finding an early cognitive marker of the disease and tracking the objective changes in the severity of the illness, may enable these new treatments to be targeted at an early stage in the course of the disease. In this phase we have decided to focus our research on Alzheimer’s disease itself, rather than potential precursors to the disorder. In subsequent phases of the research program we will also include people who have not yet developed the disease but who are at high risk of developing a dementia. This would enable us to develop new programmes aimed at prevention and reversal of the disease process. Schizophrenia & Bipolar Disorder

Patients with schizophrenia are generally reported to perform poorly on a number of attentional tasks. Illusory line motion (ILM) occurs when one end of a static bar is presented in the vicinity of a recent attentional cue, such as a flashing box. Current research will be investigating whether patients with a psychotic illness, such as schizophrenia and bipolar disorder, perceive illusory line motion in a similar fashion to healthy participants. Further studies are investigating the effects of emotional stimuli on attention elicited by visual cues.Dyslexia

Low level computations that determine the size and direction of a rapid saccadic eye movement form an early component in skilled reading. Normal readers frequently fixate an intermediate point between the start and middle of a word. the natural tendency of the eye to target an optimal viewing location can be studied with single and double targets in non-linguistic displays. Our recent research has examined the saccadic eye movements of dyslexic and normal readers in response to displays of single and double targets. Eye movement analyses revealed no difference in the spacial position of saccadic eye movements of dyslexics and non-dyslexics in response to single targets presented at 5° or 10°. However, when presented with two targets simultaneously at 5° and 10°, in contrast to normal readers, who generated saccades to an intermediate position between the two targets (towards the 'centre-of-gravity'), dyslexics generated saccades that landed close to the near target eccentricity. These finding suggest that dyslexia is associated with a deficit in the processing of global spatial information for the control of saccadic eye movements. Our research program is continuing to explore this issue.

'Target absent' decisions in cancer nodule detection are more efficient than 'target present' decisions!
Crawford, T.J., Litchfield, D., Donovan, T. 24/05/2017 In: Behavioral and Brain Sciences. 40, p. 23-24. 2 p.
Journal article

A temporary deficiency in self-control: can heightened motivation overcome this effect?
Kelly, C., Crawford, T.J., Gowen, E., Richardson, K., Sünram-Lea, S.I. 05/2017 In: Psychophysiology. 54, 5, p. 773-779. 7 p.
Journal article

Social attention in children with epilepsy
Lunn, J.F., Donovan, T., Litchfield, D., Lewis, C.N., Davies, R.A.I., Crawford, T.J. 04/2017 In: Brain and Cognition. 113, p. 76-84. 9 p.
Journal article

Patients’ views on a combined action observation and motor imagery intervention for Parkinson’s disease
Bek, J., Webb, J., Gowan, E., Vogt, S.R., Crawford, T.J., Sullivan, M., Poliakoff, E. 30/09/2016 In: Parkinson's Disease. 2016, 8 p.
Journal article

Saccadic eye movement abnormalities in children with epilepsy
Lunn, J.F., Donovan, T., Litchfield, D., Lewis, C., Davies, R., Crawford, T. 2/08/2016 In: PLoS ONE. 11, 8, 14 p.
Journal article

Monitoring of dementia using eye movements
Wilcockson, T., Crawford, T.J. 18/07/2016 In: Psychology of Older People : the FPOP bulletin.
Journal article

Imitation of hand movements in Parkinson's disease: a comparison with visual cueing
Bek, J., Gowen, E., Vogt, S., Crawford, T., Stack, E., Dick, J., Poliakoff, E. 19/06/2016
Meeting abstract

Monitoring dementia with automatic eye movements analysis
Zhang, Y., Wilcockson, T., Kim, K.I., Crawford, T.J., Gellersen, H.G., Sawyer, P.H. 18/06/2016 In: Intelligent Decision Technologies 2016. Springer p. 299-309. 11 p. ISBN: 9783319396262. Electronic ISBN: 9783319396279.
Conference contribution

A third-person perspective on co-speech action gestures in Parkinson's disease
Humphries, S., Holler, J., Crawford, T.J., Herrera, E., Poliakoff, E. 05/2016 In: Cortex. 78, p. 44-54. 11 p.
Journal article

Distinguishing between impairments of working memory and inhibitory control in cases of early dementia
Crawford, T.J., Higham, S. 29/01/2016 In: Neuropsychologia. 81, p. 61-67. 7 p.
Journal article

The disengagement of visual attention in Alzheimer's disease: a longitudinal eye-tracking study
Crawford, T., Devereaux, A., Higham, S., Kelly, C. 23/06/2015 In: Frontiers in Aging Neuroscience. 7, 10 p.
Journal article

The role of motivation, glucose and self-control in the antisaccade task
Kelly, C., Sünram-Lea, S., Crawford, T. 31/03/2015 In: PLoS ONE. 10, 3, 15 p.
Journal article

Predictors of quality of life in people with Parkinson's disease: evidence for both domain specific and general relationships
Simpson, J., Lekwuwa, G., Crawford, T. 5/02/2014 In: Disability and Rehabilitation. 36, 23, p. 1964-1970. 7 p.
Journal article

Neural correlates of illusory line motion: fMRI of ILM
Hamm, J.P., Crawford, T., Nebl , H., Kean, M., Williams , S., Ettinger, U. 27/01/2014 In: PLoS ONE. 9, 1, p. 1-11. 11 p.
Journal article

The role of working memory and attentional disengagement on inhibitory control: effects of aging and Alzheimer's disease
Crawford, T.J., Higham, S., Mayes, J., Dale, M., Shaunak, S., Lekwuwa, G. 10/2013 In: AGE. 35, 5, p. 1637-1650. 14 p.
Journal article

Females and attention to eye gaze: effects of the menstrual cycle
Wolohan, F., Bennett, S., Crawford, T. 06/2013 In: Experimental Brain Research. 227, 3, p. 379-386. 8 p.
Journal article

Illness beliefs and psychological outcome in people with Parkinson’s disease
Simpson, J., Lekwuwa, G., Crawford, T. 06/2013 In: Chronic Illness. 9, 2, p. 165-176. 12 p.
Journal article

Alzheimer's disease: is the clue in the eyes?
Crawford, T. 02/2013 In: Neurodegenerative Disease Management. 3, 1, 3 p.
Editorial

Negative priming for target selection with saccadic eye movements
Donovan, T., Crawford, T., Litchfield, D. 31/08/2012 In: Experimental Brain Research. 222, 4, p. 483-494. 12 p.
Journal article

The anti-orienting phenomenon revisited: Effects of gaze cues on antisaccade performance
Wolohan, F., Crawford, T. 08/2012 In: Experimental Brain Research. 221, 4, p. 385-392. 8 p.
Journal article

Is the relationship of prosaccade reaction times and antisaccade errors mediated by working memory?
Crawford, T.J., Parker, E., Solis-Trapala, I., Mayes, J. 02/2011 In: Experimental Brain Research. 208, 3, p. 385-397. 13 p.
Journal article

Self-esteem and self-disgust both mediate the relationship between dysfunctional cognitions and depressive symptoms
Simpson, J., Hillman, R., Crawford, T., Overton, P.G. 12/2010 In: Motivation and Emotion. 34, 4, p. 399-406. 8 p.
Journal article

Viewing another person's eye movements improves identification of pulmonary nodules in chest x-ray inspection.
Litchfield, D., Ball, L.J., Donovan, T., Manning, D.J., Crawford, T. 09/2010 In: Journal of Experimental Psychology: Applied. 16, 3, p. 251-262. 12 p.
Journal article

The perception of real and illusory motion in schizophrenia
Crawford, T.J., Hamm, J.P., Kean, M., Schmechtig, A., Kumari, V., Anilkumar, A.P., Ettinger, U. 08/2010 In: Neuropsychologia. 48, 10, p. 3121-3127. 7 p.
Journal article

The capture of visual attention using auditory cues in schizophrenia
Kean, M., Crawford, T., Wolohan, F., Kumari, V., Ettinger, U. 04/2010 In: Schizophrenia Research. 117, 2-3, p. 250-250. 1 p.
Journal article

Learning from others : effects of viewing another person’s eye movements while searching for chest nodules.
Litchfield, D., Ball, L.J., Donovan, T., Manning, D.J., Crawford, T.J. 6/03/2008 In: Proceedings of SPIE Medical Imaging: Image perception, Observer Performance and Technology Assesment. San Diego : SPIE p. 691715.
Chapter

Performance changes in lung nodule detection following perceptual feedback of eye movements.
Donovan, T., Manning, D., Crawford, T.J. 5/03/2008 In: Medical Imaging 2008: Image Perception, Observer Performance, and Technology Assessment. USA : SPIE p. 691703.
Chapter

Cueing Visual Attention to Spatial Locations With Auditory Cues
Kean, M., Crawford, T. 2008 In: Journal of Eye Movement Research. 2, 3, p. 1-13. 13 p.
Journal article

Learning from others: effects of viewing another person's eye movements while searching for chest nodules - art. no. 691715
Litchfield, D., Ball, L.J., Donovan, T., Manning, D.J., Crawford, T. 2008 In: Medical Imaging 2008: Image Perception, Observer Performance, and Technology Assessment. Bellingham, Wash. : SPIE-INT SOC OPTICAL ENGINEERING p. 91715-91715. 9 p. ISBN: 978-0-8194-7101-7.
Conference contribution

Social support and psychological outcome in people with Parkinson's disease: Evidence for a specific pattern of associations
Simpson, J., Haines, K., Lekwuwa, G., Wardle, J., Crawford, T. 11/2006 In: British Journal of Clinical Psychology. 45, 4, p. 585-590. 6 p.
Journal article

The relationship between eye movement and brain structural abnormalities in patients with schizophrenia and their unaffected relatives.
Schulze, K., MacCabe, J.H., Rabe-Hesketh, S., Crawford, T., Marshall, N., Zanelli, J., Walshe, M., Bramon, E., Murray, R.M., McDonald, C. 10/2006 In: Journal of Psychiatric Research. 40, 7, p. 589-598. 10 p.
Journal article

How do radiologists do it? The influence of experience and training on searching for chest nodules.
Manning, D., Ethell, S., Donovan, T., Crawford, T. 05/2006 In: Radiography. 12, 2, p. 134-142. 9 p.
Journal article

Time-dependent observer errors in pulmonary nodule detection.
Manning, D., Barker-Mill, S.C., Donovan, T., Crawford, T. 04/2006 In: British Journal of Radiology. 79, 940, p. 342-346. 5 p.
Journal article

Antisaccade Performance in Monozygotic Twins Discordant for Schizophrenia: The Maudsley Twin Study.
Ettinger, U., Picchioni, M., Hall, M., Schulze, K., Toulopoulou, T., Landau, S., Crawford, T.J., Murray, R.M. 03/2006 In: American Journal of Psychiatry. 163, 3, p. 543-545. 3 p.
Journal article

The effects of illusory line motion on incongruent saccades: Implications for saccadic eye movements and visual attention.
Kean, M.R., Crawford, T.J., Hamm, J.P., Klein, R.M. 1/01/2006 In: Experimental Brain Research. 173, p. 498-506. 9 p.
Journal article

Relationship between antisaccade and neuropsychological test performance and the role of IQ
Ettinger, U., Antonova, E., Halari, R., Kumar, A., Zachariah, E., Crawford, T., Mehrotra, R., Sharma, T., Kumari, V. 01/2006 In: Schizophrenia Research. 81, 2-3, p. 216-216. 1 p.
Journal article

The Inhibitory Effect of Recent Distracter.
Crawford, T.J., Higham, S., Hill, S. 12/2005 In: Vision Research. 45, 27, p. 3365-3378. 14 p.
Journal article

Lack of association between prepulse inhibition and antisaccadic deficits in chronic schizophrenia: implications for identification of schizophrenia endophenotypes.
Kumari, V., Ettinger, U., Crawford, T.J., Zachariah, E., Sharma, T. 05/2005 In: Journal of Psychiatric Research. 39, 3, p. 227-240. 14 p.
Journal article

Lack of association between prepulse inhibition and antisaccadic deficits in schizophrenia: Implications for identification of schizophrenia endophenotypes
Kumari, V., Ettinger, U., Crawford, T., Zachariah, E., Sharme, T. 15/04/2005 In: Biological Psychiatry. 57, 8 Supplement, p. 105S-105S. 1 p.
Journal article

Structural neural correlates of prosaccade and antisaccade eye movements in healthy humans.
Ettinger, U., Antonova, E., Crawford, T.J., Mitterschiffthaler, M.T., Goswani, S., Sharma, T., Kumari, V. 15/01/2005 In: NeuroImage. 24, 2, p. 487-494. 8 p.
Journal article

Inhibitory Control of Saccadic Eye Movements and Cognitive Impairment in Alzheimer's Disease.
Crawford, T.J., Higham, S., Patel, J., Renvoize, T. 1/01/2005 In: Biological Psychiatry. 57, p. 1052-1060. 9 p.
Journal article

Saccadic eye movements, schizotypy, and the role of neuroticism.
Ettinger, U., Kumari, V., Crawford, T.J., Flak, V., Sharma, T., Davis, R.E., Corr, P.J. 01/2005 In: Biological Psychology. 68, 1, p. 61-78. 18 p.
Journal article

A software framework for diagnostic medical image perception with feedback, and a novel perception visualisation technique
Phillips, P.W., Manning, D.J., Donovan, T., Crawford, T., Higham, S. 2005 In: Medical Imaging 2005: Image Perception, Observer Performance, and Technology Assessment. Bellingham, Wash. : SPIE-INT SOC OPTICAL ENGINEERING p. 572-580. 9 p. ISBN: 0-8194-5723-X.
Conference contribution

The effect of feedback on performance in a fracture detection task.
Donovan, T., Manning, D.J., Philips, P.W., Higham, S., Crawford, T.J. 2005 In: Progress in Biomedical Optics & Imaging (SPIE). 6, p. 79-85. 7 p.
Journal article

The effect of feedback on performance in fractured detection task.
Donovan, T., Manning, D.J., Philips, P.W., Higham, S., Crawford, T.J. 2005 In: Proceedings of the SPIE medical imaging conference.
Journal article

The relationship between antisaccades, smooth pursuit, and executive dysfunction in first-episode schizophrenia.
Hutton, S.B., Huddy, V., Barnes, T.R.E., Robbins, T.W., Crawford, T.J., Kennard, C., Joyce, E.M. 15/10/2004 In: Biological Psychiatry. 56, 8, p. 553-559. 7 p.
Journal article

Volumetric neural correlates of antisaccade eye movements in first-episode psychosis.
Ettinger, U., Kumari, V., Chitnis, X.A., Corr, P.J., Crawford, T.J., Fannon, D.G., O’Ceallaigh, S., Sumich, A.L., Doku, V.C., Sharma, T. 10/2004 In: American Journal of Psychiatry. 161, 10, p. 1918-1921. 4 p.
Journal article

Smooth pursuit and antisaccade eye movements in siblings discordant for schizophrenia.
Ettinger, U., Kumari, V., Crawford, T.J., Corr, P.J., Das, M., Zachariah, E., Hughes, C., Sumich, A.L., Rabe-Hesketh, S., Sharma, T. 03/2004 In: Journal of Psychiatric Research. 38, 2, p. 177-184. 8 p.
Journal article

Effects of Procyclidine on Eye Movements in Schizophrenia.
Ettinger, U., Kumari, V., Zachariah, E., Galeas, A., Crawford, T.J., Corr, P.J., Taylor, D., Das, M., Sharma, T. 12/2003 In: European Journal of Pharmacology. 28, 12, p. 2199-2208. 10 p.
Journal article

A quantitative investigation into women's experiences after a miscarriage : implications for the primary healthcare team.
Wong, M.K., Crawford, T., Gask, L., Grinyer, A. 09/2003 In: British Journal of General Practice. 53, 494, p. 697-702. 6 p.
Journal article

Reliability of smooth pursuit, fixation, and saccadic eye movements.
Ettinger, U., Kumari, V., Crawford, T.J., Davis, R.E., Sharma, T., Corr, P.J. 07/2003 In: Psychophysiology. 40, 4, p. 620-628. 9 p.
Journal article

Differential effects of olanzapine and risperidone on cognition in schizophrenia? A saccadic eye movement study.
Broerse, A., Crawford, T.J., Boer, J.A. 11/2002 In: Journal of Neuropsychiatry and Clinical Neurosciences. 14, 4, p. 454-460. 7 p.
Journal article

Relationship between brain structure and saccadic eye movements in healthy humans.
Ettinger, U., Kumari, V., Chitnis, X.A., Corr, P.J., Sumich, A.L., Rabe-Hesketh, S., Crawford, T.J., Sharma, T. 16/08/2002 In: Neuroscience Letters. 328, 3, p. 225-228. 4 p.
Journal article

Cognition and the inhibitory control of saccades in Schizophrenia and Parkinson’s disease
Crawford, T. 2002 In: The brain's eye . Amsterdam : Elsevier p. 449-466. 18 p.
Chapter (peer-reviewed)

Short and long term effects of antipsychotic medication on smooth pursuit eye tracking in schizophrenia.
Hutton, S.B., Crawford, T.J., Gibbins, H., Cuthbert, I., Barnes, T., Kennard, C., Joyce, E. 09/2001 In: Advances in Biochemical Psychopharmacology. 157, 3, p. 284-291. 8 p.
Journal article

Dyslexia and the centre-of-gravity effect.
Crawford, T.J., Higham, S. 03/2001 In: Experimental Brain Research. 137, 1, p. 122-126. 5 p.
Journal article

Parsing Cognition in Schizophrenia Using Saccadic Eye Movements.
Crawford, T.J., Broerse, A., den Boer, J.A. 1/01/2001 In: Neuropsychologia. 39, p. 742-756. 15 p.
Journal article

Saccadic hypometria in drug-naïve and drug-treated schizophrenic patients: A working memory deficit?
Hutton, S.B., Cuthbert, I., Crawford, T.J., Kennard, C., Barnes, T.R.E., Joyce, E.M. 01/2001 In: Psychophysiology. 38, 1, p. 125-132. 8 p.
Journal article

Recent Saccadic Eye Movement Research Uncovers Patterns of Cognitive Dysfunction in Schizophrenia.
Crawford, T.J., Broerse, A. 2001 In: Journal of Advances in Schizophrenia and Brain Research. 3, 2, p. 48-52. 5 p.
Journal article

Smooth pursuit eye tracking over a structured background in first-episode schizophrenic patients.
Hutton, S.B., Crawford, T.J., Kennard, C., Barnes, T.R.E., Joyce, E.M. 10/2000 In: European Archives of Psychiatry and Clinial Neuroscience. 250, 5, p. 221-225. 5 p.
Journal article

Deficits of smooth pursuit initiation in patients with degenerative cerebellar lesions.
Moschner, C., Crawford, T.J., Heide, W., Trillenberg, P., Kömpf, D., Kennard, C. 11/1999 In: Brain. 122, 11, p. 2147-2158. 12 p.
Journal article

Dopamine and impairment at the executive level.
Crawford, T.J., Broerse, A., den Boer, J.A. 08/1999 In: Behavioral and Brain Sciences. 22, 4, p. 678-679. 2 p.
Journal article

Eye movement physiology : Saccadic hypometria in drug-naive and drug treated schizophrenia patients: a working memory deficit?
Hutton, S.B., Cuthbert, I., Crawford, T.J., Kennard, C., Barnes, T.R.E., Joyce, E. 04/1999 In: Schizophrenia Research. 36, 1-3, p. 264-264. 1 p.
Journal article

Eye movement physiology: Smooth pursuit eye movements against a visually distracting background in schizophrenic probands and first degree relatives
Crawford, T.J., Sharma, T., Murray, R., Lewis, S. 04/1999 In: Schizophrenia Research. 36, 1-3, p. 263-263. 1 p.
Journal article

Remembered saccades with variable delay in Parkinson’s disease.
Shaunak, S., O’Sullivan, E., Blunt, S., Lawden, M., Crawford, T.J., Henderson, L., Kennard, C. 01/1999 In: Movement Disorders. 14, 1, p. 80-86. 7 p.
Journal article

Smooth pursuit and saccadic abnormalities in first-episode schizophrenia.
Hutton, S., Crawford, T.J., Puri, B.K., Duncan, L., Kennard, C., Barnes, T.R.E., Joyce, E.M. 05/1998 In: Psychological Medicine. 28, 3, p. 685-692. 8 p.
Journal article

Oculomotor abnormalities in first episode schizophrenic patients: a follow-up study.
Hutton, S.B., Crawford, T.J., Duncan, L., Chapman, M., Puri, B.K., Kennard, C., Barnes, T.R.E., Joyce, E.M. 01/1998 In: Schizophrenia Research. 29, 1-2, p. 115-116. 2 p.
Journal article

The relationship between neuropsychological and oculomotor deficits in first episode schizophrenia.
Hutton, S.B., Crawford, T.J., Duncan, L., Chapman, M., Puri, B.K., Kennard, C., Robbins, T.R.E., Barnes, T.R.E., Joyce, E.M. 01/1998 In: Schizophrenia Research. 29, 1-2, p. 52.
Journal article

Saccadic Eye Movements in Families Multiply Affected With Schizophrenia: The Maudsley Family Study.
Crawford, T.J., Sharma, T., Puri, B.K., Murray, R.M., Berridge, D.M., Lewis, S.W. 1998 In: American Journal of Psychiatry. 155, 12, p. 1703-1710. 8 p.
Journal article

Abnormalities of predictive saccades in Parkinson's disease.
O'Sullivan, E.P., Shaunak, S.S., Hawken, M., Crawford, T.J. 1997 In: NeuroReport. 8, 5, p. 1209-1213. 5 p.
Journal article

Transient motion of visual texture delays saccadic eye movements.
Crawford, T.J. 08/1996 In: Acta Psychologica. 92, 3, p. 251-262. 12 p.
Journal article

Abnormal saccadic distractibility in patients with schizophrenia: A 99mTc-HMPAO SPET study.
Crawford, T.J., Puri, B.K., Nijran, K.S., Jones, B., Kennard, C., Lewis, S.W. 1996 In: Psychological Medicine. 26, p. 265-277. 13 p.
Journal article

An effect of structured backgrounds on smooth pursuit eye movements in patients with cerebral lesions
Lawden, M., Bagelmann, H., Crawford, T., Matthews, T.D., Kennard, C. 1995 In: Brain. 118, 1, p. 37-48. 12 p.
Journal article

Saccadic abnormalities in psychotic patients I: neuroleptic-free psychotic patients
Crawford, T., Haeger, B., Kennard, C., Reveley, M.A., Henderson, L. 1995 In: Psychological Medicine. 25, 3, p. 461-471. 11 p.
Journal article

Saccadic abnormalities in psychotic patients II: the role of neuroleptic treatment
Crawford, T., Haeger, B., Kennard, C., Reveley, M.A., Henderson, L. 1995 In: Psychological Medicine. 25, 3, p. 473-483. 11 p.
Journal article

A pathophysiological approach to saccadic eye movements in neurological and psychiatric disease
Kennard, C., Crawford, T., Henderson, L. 1994 In: Journal of Neurology, Neurosurgery and Psychiatry. 57, 8, p. 881-885. 5 p.
Journal article

Spatial and Temporal Effects of Spatial Attention on Human Saccadic Eye Movements.
Crawford, T.J., Muller, H. 02/1992 In: Vision Research. 32, 2, p. 293-304. 12 p.
Journal article

Saccadic Eye Movements in Parkinson's Disease: I. Delayed Saccades
Lueck, C.J., Tanyeri, S., Kennard, C., Crawford, T., Henderson, L. 1992 In: Quarterly Journal of Experimental Psychology Series a Human Experimental Psychology. 45, 2, p. 193-210. 18 p.
Journal article

Saccadic Eye Movements in Parkinson's Disease: II. Remembered Saccades— Towards a Unified Hypothesis?
Lueck, C.J., Crawford, T., Henderson, L., Van Gisbergen, J.A.M., Duysens, J., Kennard, C. 1992 In: Quarterly Journal of Experimental Psychology Series a Human Experimental Psychology. 45, 2, p. 211-233. 23 p.
Journal article

Multi-stepping saccadic sequences in humans.
Crawford, T.J. 02/1991 In: Acta Psychologica. 76, 1, p. 11-29. 19 p.
Journal article

A case of ocular tilt reaction and torsional nystagmus due to direct stimulation of the midbrain in man
Lueck, C.J., Hamlyn, P., Crawford, T., Levy, I.S., Brindley, G.S., Watkins, E.S., Kennard, C. 1991 In: Brain. 114, 5, p. 2069-2079. 11 p.
Journal article

Increase in saccadic peak velocity with increased frequency of saccades in man.
Lueck, C., Crawford, T.J., Hansen, H.C., Kennard, C. 1991 In: Vision Research. 31, 7-8, p. 1439-1443. 5 p.
Journal article

Scales for rating motor impairment in Parkinson's disease: studies of reliability and convergent validity
Henderson, L., Kennard, C., Crawford, T., Day, S., Everitt, B.S., Goodrich, S., Jones, F., Park, D.M. 1991 In: Journal of Neurology, Neurosurgery and Psychiatry. 54, 1, p. 18-24. 7 p.
Journal article

Antisaccades and remembered saccades in Parkinson's disease.
Lueck, C.J., Tanyeri, S., Crawford, T., Henderson, L., Kennard, C. 04/1990 In: Journal of Neurology, Neurosurgery and Psychiatry. 53, 4, p. 284-288. 5 p.
Journal article

Auditory-visual interaction in the generation of saccades in man
Lueck, C.J., Crawford, T., Savage, C.J., Kennard, C. 1990 In: Experimental Brain Research. 82, 1, p. 149-157. 9 p.
Journal article

Saccadic eye movements in essential blepharospasm
Lueck, C.J., Tanyeri, S., Crawford, T., Elston, J.S., Kennard, C. 1990 In: Journal of Neurology . 237, 4, p. 226-229. 4 p.
Journal article

Abnormalities of nonvisually-guided eye movements in Parkinson's Disease
Crawford, T., Henderson, L., Kennard, C. 1989 In: Brain. 112, 6, p. 1573-1586. 14 p.
Journal article

Predictive responses in Parkinson's disease: manual keypresses and saccadic eye movements to regular stimulus events
Crawford, T., Goodrich, S., Henderson, L., Kennard, C. 1989 In: Journal of Neurology, Neurosurgery and Psychiatry. 52, 9, p. 1033-1042. 10 p.
Journal article

Unilateral reversal of smooth pursuit and optokinetic nystagmus
Lueck, C.J., Tanyeri, S., Mossman, S., Crawford, T.J., Kennard, C. 1989 In: Revue Neurologique. 145, 8-9, p. 656-660. 5 p.
Journal article

Two distinct deficits of visual tracking caused by unilateral lesions of cerebral cortex in humans
Thurston, S.E., Leigh, R.J., Crawford, T., Thompson, A., Kennard, C. 1988 In: Annals of Neurology. 23, 3, p. 266–273. 8 p.
Journal article