Invited speaker ("God, AI and Natural Spirituality"), Society of Ordained Scientists Consultation on "Artificial Intelligence", The College of St. George (Windsor Castle, 14–16 February 2001)

Invited speaker (“Fluid Architectures for Visual Perception”), Workshop on Representing the Structure of Visual Objects, Neural Information Processing Systems 2000 (Denver, 27 November–2 December 2000)

Invited speaker (“Bohmian Quantum Neural Networks”), Workshop on Quantum Neural Computing, Neural Information Processing Systems 2000 (Denver 27 November–2 December 2000)

Invited speaker (“Bohmian Quantum Neural Networks”), International Workshop on Quantum Neural Networks, Neuro-2000 (Moscow Engineering and Physics Institute, 19–21 January 2000)

Invited commentator/tutor, “Consciousness at the Millennium”, web-based course sponsored by the Center for Consciousness Studies (University of Arizona, Autumn 1999)

Invited Speaker (“Solving the Hard Problem by Conceptual Change”), Symposium on Consciousness Studies (University of Skövde, October 1999)

Speaker (“Transparent Computationalism”), International Conference and Workshop “New Trends in Cognitive Science 1999:  Computationalism --The Next Generation” (University of Vienna, 17–20 May 1999)

Speaker ("Non-compositional Representation in Connectionist Networks"), International Conference on Artificial Neural Networks (University of Skövde, 2-4 September 1998)

Invited speaker ("Proto-concepts, Belief and Generality"), Conference on Non-conceptual Content (University of Hertfordshire, 1 November 1997)

Invited speaker ("Consciousness and Cognitive Science"), Workshop on the Varieties and Dimensions of Conscious Experience (University of Skövde, 10-12 October 1997)

Invited speaker ("Learning in non-superpositional quantum neural networks"), First IEE Colloquium on Quantum Computing:Theory, Applications and Implications (IEE London, 4 June 1997)

Invited lecture ("Non-Conceptual Infants: Intentionality Before Objectuality"), McDonnell-Pew Centre for Cognitive Neuroscience (University of Oxford, 6 February 1997)

Invited panel member and commentator (Session: “Complexity”), Workshop on Autonomous Behaviour in Animals and Robots: Perspectives from Neuroscience, AI and Philosophy (University of Sussex, 24 January 1997)

Invited lecture (“The Pre-Conceptual Infant:The Development of Object Permanence”), Consciousness in the Natural World seminar series (University of Stirling, 12 December 1996)

Invited lecture (“The Pre-Conceptual Infant:  The Development of Object Permanence”), Intentionality and Embodiment seminar series (University of Dundee, 11 December 1996)

Invited lecture (“Horizontal and Vertical Non-Conceptual Content”), McDonell-Pew Centre for Cognitive Neuroscience (University of Oxford, 25 November 1996

Accepted poster presentation (“Individuating Concepts”), 18^th Annual Conference of the Cognitive Science Society (University of California at San Diego, 12-15 July 1996)

Invited speaker (“The Ontological Status of Computational States”), SSKKII seminar series (University of Gothenburg, 1995)

Symposium chair and invited commentator (“The Mentality of Robots”), Joint Session of The Aritstotelian and Mind Societies (University of Dundee, 8-11 July 1994)

Invited commentator (Session:  “Connectionism”), Workshop on the Implicit/Explicit Distinction (University of Sussex, 23March 1994)

Invited lecturer ("Recent Developments in Connectionism" and "An Introduction to Artificial Life", University of Skövde, Sweden, May 1992)

Invited speaker ("Quantum Computation & Quantum Learning"), Workshop on Brain, Mind & Physics (Prague, September 1993)

Invited speaker ("The Ontological Status of Computational States"), G.H. von Wright's research seminar, (University of Helsinki, May 1992)

Programme Committee member for the 18th International Joint Conference on Artificial Intelligence (IJCAI-03) (Acapulco, Mexico, 9-15 August 2003)*

Organising Committee member for the International Workshop on Quantum Neural Networks, Neuro-2000 (Moscow Engineering and Physics Institute, 19-21 January 2000)

Submission reviewer for 1999 International Joint Conference on Artificial Intelligence (Stockholm, 31 July – 6 August 1999)*

Program Committee member and session chair (Session: Applications -- Medicine, Sequence Analysis, Environment), International Conference on Artificial Neural Networks (University of Skövde, 2-4 September 1998)*

Program Committee member and session chair for the First International Conference on Bio-Computing and Emergent Computation (University of Skövde, 1-2 September 1997)*

Co-organiser and session chair for the First IEE Colloquium on Quantum Computing:  Theory, Applications and Implications (IEE London, 4 June 1997)*

Programme board member and invited speaker for International Conference on New Directions in Cognitive Science (Saariselkä, Lapland 4-9 August 1995)*

Programme board member for Workshop on Brain, Mind & Physics (Prague, 1992)