Browse by Staff

Shepherd, Alex J. and Patterson, A.J.K. (2020) Exploration of anomalous perceptual experiences in migraine between attacks using the Cardiff Anomalous Perceptions Scale. Consciousness and Cognition 82 (102945), ISSN 1053-8100.

Shepherd, Alex J. (2020) Tracking the migraine cycle using visual tasks. Vision 4 (2), p. 23. ISSN 2411-5150.

Shepherd, Alex J. (2019) A review of motion and orientation processing in migraine. Vision 3 (2), p. 12. ISSN 2411-5150.

Veszeli, J. and Shepherd, Alex J. (2019) A comparison of the effects of the colour and size of coloured overlays on young children’s reading. Vision Research 156 , pp. 73-83. ISSN 0042-6989.

Dore, P. and Dumani, A. and Wyatt, Geddes and Shepherd, Alex J. (2018) Links between global and local shape perception, coloured backgrounds, colour discrimination, and non-verbal IQ. Vision Research 151 , pp. 31-40. ISSN 0042-6989.

Shepherd, Alex J. and Joly-Mascheroni, R.M. (2017) Visual motion processing in migraine: enhanced motion after-effects are related to display contrast, visual symptoms, visual triggers and attack frequency. Cephalalgia 37 (4), pp. 315-326. ISSN 0333-1024.

Singh, Pia and Shepherd, Alex J. (2016) Enhanced motion after-effects in migraine are related to contrast sensitivity: implications for models of differences in precortical/cortical function. Investigative Ophthalmology & Visual Science 57 (3), pp. 1228-1234. ISSN 0146-0404.

Carey, Daniel and Rosen, S. and Krishnan, Saloni and Pearce, M.T. and Shepherd, Alex J. and Aydelott, Jennifer and Dick, Frederic (2015) Generality and specificity in the effects of musical expertise on perception and cognition. Cognition 137 , pp. 81-105. ISSN 0010-0277.

Salvaia, Janaina and Elias, Sheila and Shepherd, Alex J. (2014) Symptoms of visual discomfort from automobile lights and their correlation with headache in night-time taxi drivers. Lighting Research and Technology 46 (3), pp. 354-363. ISSN 1477-1535.

Tibber, M.S. and Kelly, Maria G. and Jansari, A. and Dakin, S.C. and Shepherd, Alex J. (2014) An inability to exclude visual noise in migraine. Investigative Ophthalmology & Visual Science 55 (4), pp. 2539-2546. ISSN 0146-0404.

Shepherd, Alex J. and Hine, T.J. and Beaumont, H.M. (2013) Color and spatial frequency are related to visual pattern sensitivity in migraine. Headache: The Journal of Head and Face Pain 53 (7), pp. 1087-1103. ISSN 0017-8748.

Shepherd, Alex J. and Beaumont, H.M. and Hine, T.J. (2012) Motion processing deficits in migraine are related to contrast sensitivity. Cephalalgia 32 (7), pp. 554-570. ISSN 0333-1024.

Shepherd, Alex J. and Wyatt, G. and Tibber, M.S. (2011) Visual metacontrast masking in migraine. Cephalalgia 31 (3), pp. 346-356. ISSN 0333-1024.

Shepherd, Alex J. (2010) Visual stimuli, light and lighting are common triggers of migraine and headache. Journal of Light & Visual Environment 34 (2), pp. 94-100. ISSN 0387-8805.

Siniatchkin, M. and Reich, A.L. and Shepherd, Alex J. and van Baalen, A. and Siebner, H.R. and Stephani, U. (2009) Peri-ictal changes of cortical excitability in children suffering from migraine without aura. Pain 147 (1), pp. 132-140. ISSN 0304-3959.

Shepherd, Alex J. and Siniatchkin, M. (2009) Visual pattern adaptation in subjects with photoparoxysmal EEG response: evidence for increased visual cortical excitability. Investigative Ophthalmology & Visual Science 50 (3), pp. 1470-1476. ISSN 0146-0404.

Gregg, Vernon H. and Shepherd, Alex J. (2009) Factor structure of scores on the state version of the four dimension mood scale. Educational and Psychological Measurement 69 (1), pp. 146-156. ISSN 0013-1644.

Joly-Mascheroni, Ramiro M. and Senju, Atsushi and Shepherd, Alex J. (2008) Dogs catch human yawns. Biology Letters 4 (5), pp. 446-448. ISSN 1744-9561.

Shepherd, Alex J. and Wyatt, G. (2008) Changes in induced hues at low luminance and following dark adaptation suggest rod-cone interactions may differ for luminance increments and decrements. Visual Neuroscience 25 (3), pp. 387-394. ISSN 0952-5238.

Siniatchkin, M. and Moeller, F. and Shepherd, Alex J. and Siebner, H. and Stephani, U. (2007) Altered cortical visual processing in individuals with a spreading photoparoxysmal EEG response. European Journal of Neuroscience 26 (2), pp. 529-536. ISSN 0953-816X.

Shepherd, Alex J. (2007) Models of cortical function in migraine: can psychophysical studies distinguish between them? a review of the evidence for interictal cortical hyper- and hypo-excitability. In: Clarke, L.B. (ed.) Migraine Disorders Research Trends. Hauppauge, New York, USA: Nova Science Publishers, pp. 145-164. ISBN 9781600215537.

Tibber, M.S. and Guedes, A. and Shepherd, Alex J. (2007) Orientation discrimination and contrast detection thresholds in migraine for cardinal and oblique angles. In: UNSPECIFIED (ed.) Headache and Migraine: Proceedings of the 15th Anglo-Dutch Migraine Association meeting. Utrecht, Netherlands: Wetenschappelijke uitgeverij Bunge.

Jonas, A. and Reich, A.L. and Shepherd, Alex J. and Siniatchkin, M. (2007) Peri-ictal changes of cortical excitability in paediatric migraine. In: The XIII Congress of the International Headache Society, 2007, Stockholm, Sweden. (Unpublished)

Siniatchkin, M. and Groppa, S. and Jerosch, B. and Muhle, H. and Kurth, C. and Shepherd, Alex J. and Siebner, H. and Stephani, U. (2007) Spreading photoparoxysmal EEG response is associated with an abnormal cortical excitability pattern. Brain: A Journal of Neurology 130 (1), pp. 78-87. ISSN 0006-8950.

Shepherd, Alex J. (2006) Color vision but not visual attention Is altered in migraine. Headache: The Journal of Head and Face Pain 46 (4), pp. 611-621. ISSN 0017-8748.

Siniatchkin, M. and Groppa, S. and Jerosch, B. and Muhle, H. and Shepherd, Alex J. and Stephani, U. and Siebner, H. (2006) Excitatory and inhibitory mechanisms of photosensitivity. In: 7th European Congress on Epileptology, 2006, Helsinki, Finland. (Unpublished)

Shepherd, Alex J. (2006) Local and global motion after-effects are both enhanced in migraine, and the underlying mechanisms differ across cortical areas. Brain 129 (7), pp. 1833-1843. ISSN 0006-8950.

Shepherd, Alex J. (2006) Local and global motion after-effects in migraine. In: UNSPECIFIED (ed.) Headache and Migraine: Proceedings of the 14th Anglo-Dutch Migraine Association meeting. Utrecht, Netherlands: Wetenschappelijke uitgeverij Bunge, pp. 171-181.

Tibber, M.S. and Guedes, A. and Shepherd, Alex J. (2006) Orientation discrimination and contrast detection thresholds in migraine for cardinal and oblique angles. Investigative Ophthalmology & Visual Science 47 (12), pp. 5599-5604. ISSN 0146-0404.

Tibber, M.S. and Shepherd, Alex J. (2006) Transient tritanopia in migraine: evidence for a large-field retinal abnormality in blue-yellow opponent pathways. Investigative Ophthalmology & Visual Science 47 (11), pp. 5125-5131. ISSN 0146-0404.

Harle, D.E. and Shepherd, Alex J. and Evans, B.J.W. (2006) Visual stimuli are common triggers of migraine and are associated with pattern glare. Headache: The Journal of Head and Face Pain 46 (9), pp. 1431-1440. ISSN 0017-8748.

Tibber, M.S. and Shepherd, Alex J. (2006) The oblique effect in migraine. In: Twenty-ninth European Conference on Visual Perception, 2006, St Petersburg, Russia. (Unpublished)

Shepherd, Alex J. (2005) Colour vision in migraine: selective deficits for s-cone discriminations. Cephalalgia 25 (6), pp. 412-423. ISSN 0333-1024.

Tibber, M.S. and Shepherd, Alex J. (2005) Evidence for precortical, potentially retinal-based, abnormalities of the visual system in migraine. In: The XII Congress of the International Headache Society, 2005, Kyoto, Japan. (Unpublished)

Tibber, M.S. and Shepherd, Alex J. (2005) Retinal abnormalities contribute to S-cone selective deficits in migraine. In: Tenth Applied Vision Association Christmas Meeting, 19th December 2005, Aston University, Birmingham, UK. (Unpublished)

Tibber, M.S. and Shepherd, Alex J. (2005) Retinal abnormalities contribute to S-cone selective deficits in migraine. In: Tenth Applied Vision Association Christmas Meeting, 19th December 2005, Aston University, Birmingham, UK. (Unpublished)

Shepherd, Alex J. (2005) Visual adaptation in migraine and non-headache control groups: local and global motion aftereffects (MAE) are pronounced in migraine, and both exhibit storage. In: National Headache Foundation 3rd Annual Headache Research Summit, 2005, California. (Unpublished)

Shepherd, Alex J. (2003) Colour sensitivity in migraine assessed by visual search: are there selective differences for cardinal colour directions? In: UNSPECIFIED (ed.) Headache and Migraine: Proceedings of the 11th Anglo-Dutch Migraine Association meeting. Utrecht, Netherlands: Wetenschappelijke uitgeverij Bunge, pp. 19-32.

Shepherd, Alex J. (2003) Cortical function in migraine: what can performance on visual tasks reveal? In: the XI Congress of the International Headache Society, 2003, Rome, Italy. (Unpublished)

Shepherd, Alex J. (2002) Adaptation in the visual system in migraineurs and controls. In: UNSPECIFIED (ed.) Headache and Migraine: Proceedings of the 10th Anglo-Dutch Migraine Association meeting. Utrecht, Netherlands: Wetenschappelijke uitgeverij Bunge, pp. 145-159.

Shepherd, Alex J. and Palmer, J.E. and Davis, G. (2002) Increased visual after-effects in migraine following pattern adaptation extend to simultaneous tilt illusion. Spatial Vision 16 (1), pp. 33-43. ISSN 0169-1015.

Davis, G. and Welch, V.L. and Holmes, A. and Shepherd, Alex J. (2001) Can attention select only a fixed number of objects at a time? Perception 30 (10), pp. 1227-1248. ISSN 0301-0066.

Shepherd, Alex J. (2001) Increased visual after-effects following pattern adaptation in migraine: a lack of intracortical excitation? Brain 124 (11), pp. 2310-2318. ISSN 0006-8950.

Davis, G. and Driver, J. and Pavani, F. and Shepherd, Alex J. (2000) Reappraising the apparent costs of attending to two separate visual objects. Vision Research 40 (10-12), pp. 1323-1332. ISSN 0042-6989.

Shepherd, Alex J. (2000) Visual contrast processing in migraine. Cephalalgia 20 (10), pp. 865-880. ISSN 0333-1024.

Shepherd, Alex J. (1999) Colour discrimination in migraineurs. In: UNSPECIFIED (ed.) Headache and Migraine: Proceedings of the 7th Anglo-Dutch Migraine Association meeting. Utrecht, Netherlands: Wetenschappelijke uitgeverij Bunge, pp. 23-35.

Shepherd, Alex J. (1999) Remodelling colour contrast: implications for visual processing and colour representation. Vision Research 39 (7), pp. 1329-1345. ISSN 0042-6989.

Shepherd, Alex J. (1997) Calibrating screens for continuous colour displays. Spatial Vision 11 (1), pp. 57-74. ISSN 0169-1015.

Shepherd, Alex J. (1997) A vector model of colour contrast in a cone-excitation colour space. Perception 26 (4), pp. 455-470. ISSN 0301-0066.

Shepherd, Alex J. (1995) Subjective reactions to daylight in rooms: invited discussion. Sage.

Shepherd, Alex J. (1992) Coloured shadows described in a cone contrast space. Ophthalmic and Physiological Optics 12 (2), pp. 220-224. ISSN 0275-5408.

Shepherd, Alex J. and Julian, W.G. and Purcell, A.T. (1992) Measuring appearance: parameters indicated from gloom studies. Lighting Research and Technology 24 (4), pp. 203-214. ISSN 1477-1535.

Julian, W.G. and Shepherd, Alex J. and Purcell, A.T. (1991) Directions for future studies of the gloom effect. In: UNSPECIFIED (ed.) Proceedings of the CIE 22nd Session. UNSPECIFIED, pp. 89-92.

Shepherd, Alex J. and Julian, W.G. and Purcell, A.T. (1990) Lightness, brightness and gloom in interior lighting. In: UNSPECIFIED (ed.) Proceedings of the CIBSE National Lighting Conference. UNSPECIFIED, pp. 73-86.

Siviy, S. and Kritikos, A. and Atrens, D.M. and Shepherd, Alex J. (1989) Effects of norepinephrine infused in the paraventricular hypothalamus on energy expenditure in the rat. Brain Research 487 (1), pp. 79-88. ISSN 0006-8993.

Shepherd, Alex J. and Julian, W.G. and Purcell, A.T. (1989) Gloom as a psychophysical phenomenon. Lighting Research and Technology 21 (3), pp. 89-97. ISSN 1477-1535.

Shepherd, Alex J. and Julian, W.G. and Purcell, A.T. (1989) Surface luminances and gloom. In: UNSPECIFIED (ed.) Proceedings VI Lux Europa Congress. UNSPECIFIED, pp. 31-40.

Shepherd, Alex J. and Julian, W.G. and Purcell, A.T. (1988) Gloom in buildings. In: Julian, W.G. (ed.) Light 200: 34th IES National Convention Proceedings. Sydney, Australia: Department of Architectural Science, University of Sydney, pp. 67-72. ISBN 0855891378.