(2003). The disunity of consciousness. Trends in Cogn. Neurosci. 7:214–218.</ref> and that activity in each visual area can acquire a conscious correlate without the necessity of reporting to another cortical area, though acknowledging that there must be other enabling systems, possibly located in the reticular formation.<ref>Zeki, S and ffytch, DH (1998). The Riddoch syndrome: insights into the neurobiology of conscious vision. Brain 121:25–45</ref> Thus, functional specialisation manifests itself in the temporal sequence with which we see different attributes such as colour More recently he has also studied the brain reaction to affective states generated by sensory inputs, such as the experience of love and hate. His studies of the experience of visual and musical beauty has led him to suggest that a specific part of the emotional brain, field A1 of the medial orbito-frontal cortex, is critical for such experiences. Public engagement He has lectured widely across the world, giving over 60 named lectures, including the Ferrier Lecture (Royal Society 1995); The Philip Bard Lecture (Johns Hopkins University, 1992); The Woodhull Lecture (Royal Institution, London, 1995); The Humphrey Davy Lecture (Académie des Sciences, Paris, 1996); The Grass Foundation Forbes Lectures (Marine Biological Laboratory, Woods Hole, USA 1997; Carl Gustave Bernhard Lecture (Royal Swedish Academy of Science, Stockholm, 1996; and the Tizard Lecture (Westminster School, London, 2004) among others. He has published three books, A Vision of the Brain (Blackwell, Oxford 1993 – translated into Japanese and Spanish), Inner Vision: an exploration of art and the brain (OUP, 1999); Splendors and Miseries of the Brain (Wiley-Blackwell, Oxford 2009) and co-authored La Quête de l'essentiel, Les Belles Lettres, Archimbaud, Paris, 1995 (with Balthus, Count Klossowski de Rola) and La bella e la bestia, 2011, Laterza, Italy (with Ludovica Lumer). He held an exhibition of his own art work at the Pecci Museum of Contemporary Art in Milan in 2011 (Bianco su bianco: oltre Malevich). Posts, honours and awards He was Editor of the Philosophical Transactions of the Royal Society (B) from 1997 to 2004. He has been a Trustee of Fight for Sight, a Guarantor of the neurological journal Brain, a member and then Chairman of the Wellcome Trust Vision Panel and a member of the National Science Council of France (1998–2002). He has been a Visiting Fellow or Professor at St Andrews University; Ludwig-Maxilmilians University, Munich; Duke University, USA, University of California (Berkeley), among other institutions. He has conducted a number