Dr Kelly Diederen

Kelly  Diederen

University position

Research Associate


Department of Physiology, Development and Neuroscience



Research Theme

Cognitive and Behavioural Neuroscience


My current research focuses on reward learning in healthy individuals and how errors in this system might be related to delusional belief formation.

Research Focus





Clinical conditions




Behavioural analysis

Magnetic resonance imaging (MRI)

Neuropsychological testing



Paul Fletcher

Wolfram Schultz

Tom Spencer

Associated News Items

Key publications

Diederen KM, Ziauddeen H, Vestergaard MD, Spencer T, Schultz W, Fletcher PC (2017), “Dopamine Modulates Adaptive Prediction Error Coding in the Human Midbrain and Striatum” Journal of Neuroscience 37(7): 1708-1720

Daalman K, Diederen KMJ, Hoekema L, van Lutterveld R, Sommer IEC (2016), “Five year follow-up of non-psychotic adults with frequent auditory verbal hallucinations: are they still healthy?” Psychological Medicine 1-11

Diederen KMJ, Spencer T, Vestergaard MD, Fletcher PC, Schultz W. (2016), “Adaptive Prediction Error Coding in the Human Midbrain and Striatum Facilitates Behavioral Adaptation and Learning Efficiency” Neuron

Diederen KMJ, Schultz, WS (2015), “Scaling prediction errors to reward variability benefits error-driven learning in humans” Journal of Neurophysiology

Diederen KM, Charbonnier L, Neggers SF, van Lutterveld R, Daalman K, Slotema CW, Kahn RS, Sommer IE (2013), “Reproducibility of brain activation during auditory verbal hallucinations.” Schizophr Res 146(1-3):320-5 Details

Diederen KM, Neggers SF, de Weijer AD, van Lutterveld R, Daalman K, Eickhoff SB, Clos M, Kahn RS, Sommer IE (2013), “Aberrant resting-state connectivity in non-psychotic individuals with auditory hallucinations.” Psychol Med 43(8):1685-96 Details

van Lutterveld R, Diederen KM, Koops S, Begemann MJ, Sommer IE (2013), “The influence of stimulus detection on activation patterns during auditory hallucinations.” Schizophr Res 145(1-3):27-32 Details

Diederen KM, Daalman K, de Weijer AD, Neggers SF, van Gastel W, Blom JD, Kahn RS, Sommer IE (2012), “Auditory hallucinations elicit similar brain activation in psychotic and nonpsychotic individuals.” Schizophr Bull 38(5):1074-82 Details

Diederen KM, van Lutterveld R, Sommer IE (2012), “Neuroimaging of voice hearing in non-psychotic individuals: a mini review.” Front Hum Neurosci 6:111 Details

Diederen KM, De Weijer AD, Daalman K, Blom JD, Neggers SF, Kahn RS, Sommer IE (2010), “Decreased language lateralization is characteristic of psychosis, not auditory hallucinations.” Brain 133(Pt 12):3734-44 Details

Diederen KM, Neggers SF, Daalman K, Blom JD, Goekoop R, Kahn RS, Sommer IE (2010), “Deactivation of the parahippocampal gyrus preceding auditory hallucinations in schizophrenia.” Am J Psychiatry 167(4):427-35 Details

Sommer IEC, Diederen KMJ (2009), “Language production in the non-dominant hemisphere as a potential source of auditory verbal hallucinations” Brain

Sommer IE, Diederen KM, Blom JD, Willems A, Kushan L, Slotema K, Boks MP, Daalman K, Hoek HW, Neggers SF, Kahn RS (2008), “Auditory verbal hallucinations predominantly activate the right inferior frontal area.” Brain 131(Pt 12):3169-77 Details