Training in theoretical and computational neuroscience and machine learning. The Gatsby Unit is a centre for theoretical neuroscience and machine learning, focusing on unsupervised, semi-supervised and reinforcement learning, neural dynamics, population coding, Bayesian (Including nonparametric) statistics, kernel methods and applications of these to the analysis of perceptual processing, neural data, artificial intelligence and bioinformatics. It provides a unique opportunity for a critical mass of theoreticians to interact closely with each other, and with other world-class research groups in related departments at UCL, including Computer Science, Functional Imaging, Physics, Physiology, Psychology, Neurology, Ophthalmology, Statistical Science, the cross-faculty Centre for Computational Statistics and Machine Learning, and with other UK and overseas universities. We expect particularly close links with the nascent Sainsbury Wellcome Centre for Neural Circuits and Behaviour, with which we will shortly share a brand new building. The Unit has openings for exceptional PhD candidates. Applicants should have a strong analytical background, a keen interest in neuroscience and/or machine learning and a relevant first degree, for example in Computer Science, Engineering, Mathematics, Neuroscience, Physics, Psychology or Statistics. The PhD programme lasts four years, including a first year of intensive instruction in techniques and research in theoretical neuroscience and machine learning. All students are fully funded, regardless of nationality. The Unit also welcomes applications from students with pre-secured funding or who are currently soliciting other scholarship/studentships. Gatsby PhD studentships cover the cost of tuition at the appropriate rate, and include a tax-free stipend of £20,000 per annum. Applications (including a CV, statement of research interests, and letters from three referees) for 2015/16 admission must be sent directly to the Gatsby Unit admissions@gatsby.ucl.ac.uk by midnight December 17th, 2014. Full details of our programme, and how to apply, are available at: http://www.gatsby.ucl.ac.uk/teaching/phd For further details of research interests please see http://www.gatsby.ucl.ac.uk/research.html and the individual faculty webpages at http://www.gatsby.ucl.ac.uk/members.html