Laurel S Morris


I have studied disorders of addiction, focussing on correlates of impulsivity and compulsivity. I am also interested in psychopharmacology; how neurotransmitter dynamics of neural circuits influence cognition.

Research Focus





Clinical conditions



Behavioural analysis

Magnetic resonance imaging (MRI)

Neuropsychological testing


No collaborators listed

Associated News Items

Key publications

Morris LS, Kundu P, Baek K, Irvine M, Mechelmans D, Wood J, Harrison NA, Robbins TW, Bullmore ET, Voon V (2015), “Jumping the gun: mapping neural correlates of waiting impulsivity and relevance across alcohol misuse” Biol Psychiatry

Morris LS, Kundu P, Dowell N, Mechelmans D, Favre P, Irvine MA, Robbins TW, Daw ND, Bullmore ET, Harrison NA, Voon V (2015), “Fronto-striatal organization: defining functional and microstructural substrates of behavioural flexibility” Cortex



Morris LS, Sprenger C, Koda K, de la Mora DM et al., Seymour B (2018), “Anterior cingulate cortex connectivity is associated with suppression of behaviour in a rat model of chronic pain” Brain and Neuroscience Advances 2

Morris LS, Voon V, Leggio L (2018), “Stress, motivation and the gut?brain axis: A focus on the ghrelin system and alcohol use disorder” Alcoholism: Clinical and Experimental Research 42(8): 1378-1389


Morris LS, Ba BT, Baek K, Chang-Webb YC, Mitchell S, Strelchuk D, Mikheenko Y, Phillips W, Zandi M, Jenaway A, Walsh C. (2017), “Disrupted avoidance learning in functional neurological disorder. ” NeuroImage: Clinical.

Morris LS, Dowell NG, Cercignani M, Harrison NA, Voon V (2017), “Binge drinking differentially affects cortical and subcortical microstructure” Addiction Biology

Morris, L. S., Baek, K., Tait, R., Elliott, R., Ersche, K. D., Flechais, R., McGonigle, J., Murphy, A., Nestor, L. J., Orban, C., Passetti, F., Paterson, L. M., Rabiner, I., Reed, L., Smith, D., Suckling, J., Taylor, E. M., Bullmore, E. T., Lingford-Hughes, A. R., Deakin, B., Nutt, D. J., Sahakian, B. J., Robbins, T. W., Voon, V., and ICCAM Consortium (2017), “Naltrexone ameliorates functional network abnormalities in alcohol-dependent individuals. ” Addiction Biology, doi: 10.1111/adb.12503.


C Schmidt, LS Morris, TL Kvamme, P Hall, T Birchard, V Voon (2016), “Compulsive sexual behavior: Prefrontal and limbic volume and interactions ” Human Brain Mapping doi:10.1002/hbm.23447

K Baek, LS Morris, P Kundu, V Voon (2016), “Disrupted resting-state brain network properties in obesity: decreased global and putaminal cortico-striatal network efficiency ” Psychological Medicine 2:1-12

Morris LS, Baek K, Voon V (2016), “Distinct cortico-striatal connections with subthalamic nucleus underlie facets of compulsivity” Cortex

Morris LS, Voon V (2016), “Dimensionality of Cognitions in Behavioral Addictions” Curr Behav Neurosci Rep

RB Dudas, TB Mole, LS Morris, C Denman, E Hill, B Szalma, D Evans, P Fletcher (2016), “Amygdala and dlPFC abnormalities, with aberrant connectivity and habituation in response to emotional stimuli in females with BPD ” Journal of Affective Disorders 208: 460–466

Voon V, Droux F, Morris L, Chabardes S, Bougerol T, David O, Krack P, Polosan M (2016), “Decisional impulsivity and the associative-limbic subthalamic nucleus in obsessive-compulsive disorder: stimulation and connectivity” Brain


Banca P, Morris LS, Mitchell S, Harrison NA, Potenza MN, Voon V (2015), “Novelty, conditioning and attentional bias to sexual rewards” J Psych Res

Morris LS, Baek K, Kundu P, Harrison NA, Frank MJ, Voon V (2015), “Biases in the explore-exploit tradeoff in addictions: the role of avoidance of uncertainty” Neuropsychopharm

Voon V, Baek K, Enander J, Worbe Y, Morris LS, Harrison NA, Robbins TW, Ruck C, Daw N (2015), “Motivation and value influences in the relative balance of goal-directed and habitual behaviours in obsessive-compulsive disorder” Transl Psych

Voon V, Chang-Webb YC, Morris LS, Cooper E, Sethi A, Baek K, Grant J, Robbins TW, Harrison NA (2015), “Waiting impulsivity : the influence of acute methylphenidate and feedback.” Int J Neuropsychopharmacol Details


Morris LS (2014), “Notes of Importance” Science 345(6197): 630

Roeser RW, Vago DR, Pinela, C, Morris, LS, Taylor, C, Harrison, J (2014), “Contemplative Education: Cultivating Ethical Development through Mindfulness Training” Handbook of Moral and Character Education. 2nd ed.

Vago, DR, Wallenstein GV, Morris LS (2014), “Hippocampus” Encyclopedia of Neurological Sciences, 2e, Academic Press

Voon V, Mole TB, Banca P, Porter L, Morris L, Mitchell S, Lapa TR, Karr J, Harrison NA, Potenza MN, Irvine M (2014), “Neural Correlates of Sexual Cue Reactivity in Individuals with and without Compulsive Sexual Behaviours” PLoS One 9(7):e102419

Voon V, Morris LS, Irvine MA, Ruck C, Worbe Y, Derbyshire K, Rankov V, Schreiber LR, Odlaug BL, Harrison NA, Wood J, Robbins TW, Bullmore ET, Grant JE (2014), “Risk Taking in Disorders of Natural and Drug Rewards: Neural Correlates and Effects of Probability, Valence and Magnitude.” Neuropsychopharmacology Details


Wright ND, Morris LS, Guitart-Masip M, Dolan RJ (2013), “Manipulating the contribution of approach-avoidance to the perturbation of economic choice by valence.” Front Neurosci 7:228 Details

Wright ND, Symmonds M, Morris LS, Dolan RJ (2013), “Dissociable Influences of Skewness and Valence on Economic Choice and Neural Activity” PLoS ONE 8(12): e83454