Dr Kelly Diederen

University position
Research Associate
Departments
Department of Physiology, Development and Neuroscience
Research Theme
Interests
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
KeywordsReward Learning Delusions |
Clinical conditionsPsychosis Schizophrenia |
Equipment
Behavioural analysis
Magnetic resonance imaging (MRI)
Neuropsychological testing
Collaborators
CambridgeTom Spencer |
Key publications
Diederen KM, Neggers SF, de Weijer AD, van Lutterveld R, Daalman K, Eickhoff SB, Clos M, Kahn RS, Sommer IE (2012), “Aberrant resting-state connectivity in non-psychotic individuals with auditory hallucinations.” Psychol Med :1-12 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, Daalman K, de Weijer AD, Neggers SF, van Gastel W, Blom JD, Kahn RS, Sommer IE (2011), “Auditory Hallucinations Elicit Similar Brain Activation in Psychotic and Nonpsychotic Individuals.” Schizophr Bull 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 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
Publications
2012
Daalman K, Diederen KM, Derks EM, van Lutterveld R, Kahn RS, Sommer IE (2012), “Childhood trauma and auditory verbal hallucinations.” Psychol Med 42(12):2475-84 Details
Howes OD, Shotbolt P, Bloomfield M, Daalman K, Demjaha A, Diederen KM, Ibrahim K, Kim E, McGuire P, Kahn RS, Sommer IE (2012), “Dopaminergic Function in the Psychosis Spectrum: An [18F]-DOPA Imaging Study in Healthy Individuals With Auditory Hallucinations.” Schizophr Bull Details
Slotema CW, Daalman K, Blom JD, Diederen KM, Hoek HW, Sommer IE (2012), “Auditory verbal hallucinations in patients with borderline personality disorder are similar to those in schizophrenia.” Psychol Med :1-6 Details
Sommer IE, Clos M, Meijering AL, Diederen KM, Eickhoff SB (2012), “Resting state functional connectivity in patients with chronic hallucinations.” PLoS One 7(9):e43516 Details
van Lutterveld R, Hillebrand A, Diederen KM, Daalman K, Kahn RS, Stam CJ, Sommer IE (2012), “Oscillatory cortical network involved in auditory verbal hallucinations in schizophrenia.” PLoS One 7(7):e41149 Details
2011
Blom JD, Looijestijn J, Goekoop R, Diederen KM, Rijkaart AM, Slotema CW, Sommer IE (2011), “Treatment of Alice in Wonderland syndrome and verbal auditory hallucinations using repetitive transcranial magnetic stimulation: a case report with fMRI findings.” Psychopathology 44(5):337-44 Details
Daalman K, Boks MP, Diederen KM, de Weijer AD, Blom JD, Kahn RS, Sommer IE (2011), “The same or different? A phenomenological comparison of auditory verbal hallucinations in healthy and psychotic individuals.” J Clin Psychiatry 72(3):320-5 Details
de Weijer AD, Mandl RC, Diederen KM, Neggers SF, Kahn RS, Hulshoff Pol HE, Sommer IE (2011), “Microstructural alterations of the arcuate fasciculus in schizophrenia patients with frequent auditory verbal hallucinations.” Schizophr Res 130(1-3):68-77 Details
de Weijer AD, Neggers SF, Diederen KM, Mandl RC, Kahn RS, Hulshoff Pol HE, Sommer IE (2011), “Aberrations in the arcuate fasciculus are associated with auditory verbal hallucinations in psychotic and in non-psychotic individuals.” Hum Brain Mapp Details
Slotema CW, Blom JD, de Weijer AD, Diederen KM, Goekoop R, Looijestijn J, Daalman K, Rijkaart AM, Kahn RS, Hoek HW, Sommer IE (2011), “Can low-frequency repetitive transcranial magnetic stimulation really relieve medication-resistant auditory verbal hallucinations? Negative results from a large randomized controlled trial.” Biol Psychiatry 69(5):450-6 Details
Somers M, Neggers SF, Diederen KM, Boks MP, Kahn RS, Sommer IE (2011), “The Measurement of Language Lateralization with Functional Transcranial Doppler and Functional MRI: A Critical Evaluation.” Front Hum Neurosci 5:31 Details
2010
Sommer IE, Daalman K, Rietkerk T, Diederen KM, Bakker S, Wijkstra J, Boks MP (2010), “Healthy individuals with auditory verbal hallucinations; who are they? Psychiatric assessments of a selected sample of 103 subjects.” Schizophr Bull 36(3):633-41 Details
Sommer IE, Selten JP, Diederen KM, Blom JD (2010), “Dissecting auditory verbal hallucinations into two components: audibility (Gedankenlautwerden) and alienation (thought insertion).” Psychopathology 43(2):137-40 Details
2009
Sommer IEC, Diederen KMJ (2009), “Language production in the non-dominant hemisphere as a potential source of auditory verbal hallucinations” Brain


