Dr Andrew Welchman University positionSenior Research Associate Dr Andrew Welchman is pleased to consider applications from prospective PhD students. DepartmentsHome pagehttp://andrewwelchman.info (personal home page) Research ThemesInterestsI am interested in how the brain brings together information from the senses to support perception and interaction with the rapidly changing world. Work in my lab integrates psychophysics, movement recording, modelling and brain imaging techniques (TMS, fMRI). Current projects are examining (i) the neural circuits that support 3D perception from binocular disparity and integrated depth cues; (ii) the mechanisms that support multisensory perception; (iii) perceptual learning and plasticity; (iv) the perception of material properties; (v) movement production and execution; (vi) synchronisation and rhythmicity. Research Focus
EquipmentBehavioural analysis Computational modelling Electroencephalography (EEG) Magnetic resonance imaging (MRI) CollaboratorsNo collaborators listed Associated News Items
Key publicationsBan H & Welchman AE (2015), “fMRI analysis-by-synthesis reveals a dorsal hierarchy that extracts surface slant” Journal of Neuroscience 35, 9823-35 Goncalves NR, Ban H, Sánchez-Panchuelo RM, Francis ST, Schluppeck D & Welchman AE (2015), “7 tesla fMRI reveals systematic functional organization for binocular disparity in dorsal visual cortex” Journal of Neuroscience 35, 3056-72 Ban H, Preston TJ, Meeson A, Welchman AE (2012), “The integration of motion and disparity cues to depth in dorsal visual cortex.” Nat Neurosci 15(4):636-43 Details Publicationsin pressSun HC, Di Luca M, Ban H, Muryy A, Fleming RW, Welchman AE (in press), “Differential processing of binocular and monocular gloss cues in human visual cortex.” J Neurophysiol doi: 10.1152/jn.00829.2015 Sun HC, Welchman AE, Chang DH, Di Luca M (in press), “Look but don't touch: Visual cues to surface structure drive somatosensory cortex.” Neuroimage doi: 10.1016/j.neuroimage.2015.12.054 2015Dekker TM, Ban H, van der Velde B, Sereno MI, Welchman AE & Nardini M (2015), “Late development of cue integration is linked to sensory fusion in cortex” Current Biology 25, 2856-61 Kourtzi Z, Welchman AE (2015), “Adaptive shape coding for perceptual decisions in the human brain.” Journal of Vision 15(7):2 Luft CD, Meeson A, Welchman AE, Kourtzi Z (2015), “Decoding the future from past experience: learning shapes predictions in early visual cortex.” Journal of Neurophysiology doi: 10.1152/jn.00753.2014 Patten ML, Welchman AE (2015), “fMRI Activity in Posterior Parietal Cortex Relates to the Perceptual Use of Binocular Disparity for Both Signal-In-Noise and Feature Difference Tasks.” PLoS One doi: 10.1371/journal.pone.0140696 Pelekanos V, Ban H, Welchman AE (2015), “Brightness masking is modulated by disparity structure.” Vision Research doi: 10.1016/j.visres.2015.02.010 Sun HC, Ban H, Di Luca M, Welchman AE (2015), “fMRI evidence for areas that process surface gloss in the human visual cortex.” Vision Research doi: 10.1016/j.visres.2014.11.012 2014Chang DH, Mevorach C, Kourtzi Z, Welchman AE. (2014), “Training transfers the limits on perception from parietal to ventral cortex.” Current Biology doi: 10.1016/j.cub.2014.08.058 Elliott MT, Wing AM, Welchman AE (2014), “Moving in time: Bayesian causal inference explains movement coordination to auditory beats.” Proc Biol Sci 281(1786) Details Murphy AP, Leopold DA, Welchman AE (2014), “Perceptual memory drives learning of retinotopic biases for bistable stimuli.” Front Psychol 5:60 Details Muryy AA, Fleming RW, Welchman AE (2014), “Key characteristics of specular stereo.” Journal of Vision doi: 10.1167/14.14.14 2013Chang DH, Kourtzi Z, Welchman AE (2013), “Mechanisms for extracting a signal from noise as revealed through the specificity and generality of task training.” J Neurosci 33(27):10962-71 Details Dövencioğlu D, Ban H, Schofield AJ, Welchman AE (2013), “Perceptual integration for qualitatively different 3-D cues in the human brain.” J Cogn Neurosci 25(9):1527-41 Details Dövencioğlu DN, Welchman AE, Schofield AJ (2013), “Perceptual learning of second order cues for layer decomposition.” Vision Res 77:1-9 Details Murphy AP, Ban H, Welchman AE (2013), “Integration of texture and disparity cues to surface slant in dorsal visual cortex.” J Neurophysiol 110(1):190-203 Details Muryy AA, Welchman AE, Blake A, Fleming RW (2013), “Specular reflections and the estimation of shape from binocular disparity.” Proc Natl Acad Sci U S A 110(6):2413-8 Details Welchman AE, Kourtzi Z (2013), “Linking brain imaging signals to visual perception.” Vis Neurosci 30(5-6):229-41 Details 2011Elliott MT, Wing AM, Welchman AE (2011), “The effect of ageing on multisensory integration for the control of movement timing.” Exp Brain Res 213(2-3):291-8 Details Lugtigheid AJ, Brenner E, Welchman AE (2011), “Speed judgments of three-dimensional motion incorporate extraretinal information.” J Vis 11(13) Details Lugtigheid AJ, Welchman AE (2011), “Evaluating methods to measure time-to-contact.” Vision Res 51(20):2234-41 Details 2010Elliott MT, Wing AM, Welchman AE (2010), “Multisensory cues improve sensorimotor synchronisation.” Eur J Neurosci 31(10):1828-35 Details Papathomas TV, Kourtzi Z, Welchman AE (2010), “Perspective-based illusory movement in a flat billboard--an explanation.” Perception 39(8):1086-93 Details Welchman AE, Stanley J, Schomers MR, Miall RC, Bülthoff HH (2010), “The quick and the dead: when reaction beats intention.” Proc Biol Sci 277(1688):1667-74 Details Wing AM, Doumas M, Welchman AE (2010), “Combining multisensory temporal information for movement synchronisation.” Exp Brain Res 200(3-4):277-82 Details Zhang J, Meeson A, Welchman AE, Kourtzi Z (2010), “Learning alters the tuning of functional magnetic resonance imaging patterns for visual forms.” J Neurosci 30(42):14127-33 Details 2009Elliott MT, Welchman AE, Wing AM (2009), “Being discrete helps keep to the beat.” Exp Brain Res 192(4):731-7 Details Elliott MT, Welchman AE, Wing AM (2009), “MatTAP: A MATLAB toolbox for the control and analysis of movement synchronisation experiments.” J Neurosci Methods 177(1):250-7 Details Preston TJ, Kourtzi Z, Welchman AE (2009), “Adaptive estimation of three-dimensional structure in the human brain.” J Neurosci 29(6):1688-98 Details Welchman AE, Harris JM, Brenner E (2009), “Extra-retinal signals support the estimation of 3D motion.” Vision Res 49(7):782-9 Details 2008Preston TJ, Li S, Kourtzi Z, Welchman AE (2008), “Multivoxel pattern selectivity for perceptually relevant binocular disparities in the human brain.” J Neurosci 28(44):11315-27 Details Welchman AE, Lam JM, Bülthoff HH (2008), “Bayesian motion estimation accounts for a surprising bias in 3D vision.” Proc Natl Acad Sci U S A 105(33):12087-92 Details 2007Chandrasekaran C, Canon V, Dahmen JC, Kourtzi Z, Welchman AE (2007), “Neural correlates of disparity-defined shape discrimination in the human brain.” J Neurophysiol 97(2):1553-65 Details 2005Kourtzi Z, Betts LR, Sarkheil P, Welchman AE (2005), “Distributed neural plasticity for shape learning in the human visual cortex.” PLoS Biol 3(7):e204 Details Welchman AE, Deubelius A, Conrad V, Bülthoff HH, Kourtzi Z (2005), “3D shape perception from combined depth cues in human visual cortex.” Nat Neurosci 8(6):820-7 Details |