Dr Ameera Patel
My most recent work has focused on developing new signal processing methods for denoising functional MRI time series that enable model-free removal of spatially-variabel and non-linear motion artefacts with high efficacy. I have extended this method to develop new methods for probabilistic analysis of brain graphs from single subjects post-denoising, which enable tight control over type 1 error or false positives.
As part of this work I have co-developed, and currently run, a software initiative at the university (the fMRI Signal Processing Toolbox - SPT) to enable researchers in the field to implement these methods on their own data. This incorporates the BrainWavelet Toolbox which I have developed for denoising non-stationary artefacts from biological time series / probabilistic inference (Patel et al., 2014, 2015. NeuroImage) - available free for download from www.brainwavelet.org.
My latest work focuses on application of these statistical methods to wider healthcare problems.
Magnetic resonance imaging (MRI)
No collaborators listed
Associated News Items
Patel AX, Bullmore ET (2015), “A wavelet-based estimator of the degrees of freedom in denoised fMRI time series for probabilistic testing of functional connectivity and brain graphs.” Neuroimage Details
Patel AX, Kundu P, Rubinov M, Simon Jones P, Vértes PE, Ersche KD, Suckling J, Bullmore ET (2014), “A wavelet method for modeling and despiking motion artifacts from resting-state fMRI time series.” Neuroimage Details
Jao T, Schröter M, Chen CL, Cheng YF, Lo CZ, Chou KH, Patel AX, Lin WC, Lin CP, Bullmore ET (2015), “Functional brain network changes associated with clinical and biochemical measures of the severity of hepatic encephalopathy.” Neuroimage 122:332-344 Details
Patel AX, Burdakov D (2015), “Mechanisms of gain control by voltage-gated channels in intrinsically-firing neurons.” PLoS One 10(3):e0115431 Details
Peeters SC, van de Ven V, Gronenschild EH, Patel AX, Habets P, Goebel R, van Os J, Marcelis M, Genetic Risk and Outcome of Psychosis (G.R.O.U.P.) (2015), “Default mode network connectivity as a function of familial and environmental risk for psychotic disorder.” PLoS One 10(3):e0120030 Details
Patel AX, Miller SR, Nathan PJ, Kanakaraj P, Napolitano A, Lawrence P, Koch A, Bullmore ET (2014), “Neuroendocrine and sympathetic responses to an orexin receptor antagonist, SB-649868, and Alprazolam following insulin-induced hypoglycemia in humans.” Psychopharmacology (Berl) Details
Breckel TP, Thiel CM, Bullmore ET, Zalesky A, Patel AX, Giessing C (2013), “Long-term effects of attentional performance on functional brain network topology.” PLoS One 8(9):e74125 Details
Crossley NA, Mechelli A, Vértes PE, Winton-Brown TT, Patel AX, Ginestet CE, McGuire P, Bullmore ET (2013), “Cognitive relevance of the community structure of the human brain functional coactivation network.” Proc Natl Acad Sci U S A 110(28):11583-8 Details
Giessing C, Thiel CM, Alexander-Bloch AF, Patel AX, Bullmore ET (2013), “Human brain functional network changes associated with enhanced and impaired attentional task performance.” J Neurosci 33(14):5903-14 Details
Patel AX, Murphy N, Burdakov D (2012), “Tuning low-voltage-activated A-current for silent gain modulation.” Neural Comput 24(12):3181-90 Details