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Professor Declan McKeefry

PositionProfessor of Visual Neuroscience
LocationF13c, Richmond building
DepartmentBradford School of Optometry and Vision Sciences
Telephone+44 (0) 1274 234648

Research Interests (key words only)

colour perception, motion, speed perception, visual short term memory

Teaching and Supervisory Responsibilities

  • Module co-ordinator: Low Vision and Ageing (3rd year)
  • Assessment of Binocular Vision (2nd Year)

Administrative Responsibilities

Post-Graduate Student Co-ordinator and Seminars organiser for the Vision Science Research Group.

Study History

Declan graduated in 1988 with a degree in Ophthalmic Optics from UMIST (now University of Manchester) and became a Member of the College of Optometrists in 1989.

His PhD was carried out under the supervision of Prof Janus Kulikowski, also in Manchester, and centred on the psychophysical and electrophysiological investigation of colour perception in primates.  He completed his PhD in 1993 and for the following year was a post-doc in the Dept of Experimental Psychology at the University of Oxford. 

Professional History

From 1994-1997 he was a Research Fellow in the Dept of Anatomy, UCL.

In 1997 he took up a Lecturship in the Dept of Optometry at the University of Ulster and subsequently the University of Bradford in 2001.

In 2003 he was promoted to Senior Lecturer and to Reader in 2008.

Research Areas

Declan's research interests lie in primarily in colour perception, but he is also intersted in motion and speed perception, as well as in the mechanisms of visual short term memory.

In the study of these different aspects of visual perception and cognition he applies a variety of methodologies including; psychophysics, electrophysiology (EEG and ERG), brain imaging and transcranial magnetic stimulation (TMS).

His research has been supported by the Wellcome Trust, the Royal Society, the College of Optometrists and the BBSRC. Current PhD students: Naveen Challa and Vanda Nemes. Current collaborators: Prof A Morland, York Neuroimaging Centre, University of York, Drs I.Murray and N.Parry, Faculty of Life Sciences University of Manchester and Prof J. Kremers, Dept. Ophthalmology, University of Erlangen-Nuremburg, Germany.

Declan is currently on the steering committee of the Yorkshire Vision Network.


  • Parry NRA, Murray IJ, Panorgias A, McKeefry DJ, Lee BB, Kremers J. (2012). Simultaneous chromatic and luminance human ERG responses using a temporal compound stimulus. J. Physiol. in press
  • Panorgias A., Parry N.R.A., McKeefry DJ, Kulikowski JJ. and Murray I.J. (2012). Phases of daylight and the stability of colour perception across the human retina. Journal of Vision, 12(3):1, 1–11
  • Nemes, V., Parry NRA, Whitaker, D. & McKeefry DJ. (2012). The retention and disruption of colour in short-term visual memory. Journal of Vision, 12(1): 26; 1-14
  • Panorgias A., Parry NRA, McKeefry DJ, Kulikowski JJ, Murray IJ. (2012). Sex differences in peripheral colour vision; a colour-matching study. Journal of Vision, 12(1): 18; 1-10
  • Panorgias A, Kulikowski JJ, Parry NRA, McKeefry DJ & Murray IJ. (2012). Cone contrasts and peripheral colour matching. Journal of the Optical Society of America, A. 29
  • Parry NRA, Panorgias A, McKeefry DJ, Murray IJ. (2012). Real-world stimuli show colour-dependent peripheral hue distortion. Journal of the Optical Society of America, A, 29, 96-101
  • Nemes, V., Whitaker D, Heron, J. & McKeefry, DJ. (2011). Multiple Spatial frequency channels in human visual perceptual memory. Vision Research, 51: 2331-2339
  • Bartlett R. & McKeefry DJ. (2011). Re-thinking the experiences and entitlements of people with dementia: taking vision into account. Journal of Care Services Management, 5, 105-114
  • Nemes, V., Parry NRA & McKeefry, DJ, (2010). A behavioural investigation of human visual short term memory for colour. Ophthalmic & Physiological Optics 30: 594–601
  • Challa, N.K., McKeefry, DJ, Parry, N.R.A., Kremers, J., Murray I.J. & Panorgias, A. (2010). L- and M-cone input to human chromatic- and luminance-based flicker ERGs as a function of retinal eccentricity. Ophthalmic & Physiological Optics, 30: 503–510
  • Panorgias A, Kulikowski JJ, Parry NRA, McKeefry DJ, and Murray IJ. (2010). Naming versus matching and the stability of unique hues. Ophthalmic & Physiological Optics, 30: 553–559
  • McKeefry DJ, Burton, MP & Morland A. (2010). The contribution of human cortical area V3A to the perception of chromatic motion: a transcranial magnetic stimulation study. European Journal of Neuroscience, 31:575-584
  • Burton, MP, McKeefry DJ, Barrett BT, Vakrou C & Morland A. (2009). Disruptions to Human Speed Perception Induced by Motion Adaptation and Transcranial Magnetic Stimulation. European Journal of Neuroscience, 30: 1989-1998
  • McKeefry DJ, Gouws A, Burton, MP & Morland A. (2009). Non-invasive Dissection of the Human Visual Cortex: using fMRI and TMS to study the organization of the visual brain. The Neuroscientist, 15:489-506
  • Panorgias A, Parry NRA, McKeefry DJ, Kulikowski JJ and Murray IJ. (2009). Nasal-temporal differences in cone-opponency in the near peripheral retina. Ophthalmic & Physiological Optics, 29:375-381
  • McKeefry DJ, Burton, MP, (2009). The perception of speed based upon L-M and S-(L+M) cone opponent processing. Vision Research, 49:870-876
  • McKeefry DJ, Parry NRA, Murray IJ & Panorgias A, (2008). The Perception of Chromatic Stimuli in the Peripheral Human Retina. Psichologija, 38:19-28
  • McKeefry DJ, Burton, MP, Vakrou C, Barrett BT & Morland A. (2008). Induced deficits in speed perception by transcranial magnetic stimulation of human cortical areas V5/MT+ and V3A. Journal of Neuroscience, 28, 6848-6857
  • Parry NRA, Murray IJ. & McKeefry DJ, (2008). Reaction time measures of adaptation to chromatic contrast. Visual Neuroscience, 25, 405-410

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