# Scientific Publications

### Contents

### Journal Articles

A Omidvarnia, G Azemi, B Boashash, JM O’ Toole, PB Colditz, S Vanhatalo (2014) **Measuring
time-varying information flow for scalp EEG signals: orthogonalized partial directed
coherence.** IEEE Transcations on Biomedical Engineering, 61(3), pp. 680–693.

*links:* PDF || doi:10.1109/TBME.2013.2286394

NL Grigg, SC Wearing, JM O’ Toole, JE Smeathers (2014) **The effect of exercise repetition
on the frequency characteristics of motor output force: implications for Achilles
tendinopathy rehabilitation.** Journal of Science and Medicine in Sport, 17(1), pp 13–17.

*links:* doi:10.1016/j.jsams.2013.03.014

B Boashash, G Azemi, JM O’ Toole (2013) **Time-Frequency Processing of Nonstationary Signals: Advanced TFD Design to Aid Diagnosis with Highlights from Medical Applications** IEEE Signal Processing Magazine, 30(6), pp 108–109.

*links:* PDF || doi:10.1109/MSP.2013.2265914 || code

JM O’ Toole, B Boashash, (2013) **Fast and memory-efficient algorithms for computing quadratic time–frequency distributions.** Applied and Computational Harmonic Analysis, 35(2), 350–358.

*links:* PDF || doi:10.1016/j.acha.2013.01.003 || code

A Omidvarnia, G Azemi, JM O’ Toole, B Boashash, B. (2013) **Robust estimation of highly-varying nonlinear instantaneous frequency of monocomponent signals using a lower-order complex-time distribution.** Signal Processing, 93(11), 3251–3260.

*links:* PDF || doi:10.1016/j.sigpro.2013.03.041

NL Grigg, SC Wearing, JM O’ Toole, JE Smeathers, (2013) **Achilles tendinopathy modulates force frequency characteristics of eccentric exercise**. Medicine and Science in Sports and Exercise, 45(3), 520–526.

*links:* doi:10.1249/MSS.0b013e31827795a7

M Mesbah, JM O’ Toole, PB Colditz, B Boashash, (2012) **Instantaneous Frequency Based Newborn EEG Seizures Characterization.** EURASIP Journal on Advances in Signal Processing, 2012(143).

*links:* PDF || doi:10.1186/1687-6180-2012-143

NJ Stevenson, JM O’ Toole, L. Rankine, GB Boylan, B Boashash (2012) **A nonparametric feature for neonatal EEG seizure detection based on a representation of pseudo-periodicity.** Medical Engineering \Physics, 34(4), 437–446.

*links:* PDF || doi:10.1016/j.medengphy.2011.08.001

JM O’ Toole, B Boashash (2011) **Time–frequency detection of slowly varying periodic signals with harmonics: methods and performance evaluation.** EURASIP Journal on Advances in Signal Processing, 2011(193797).

*links:* PDF || doi:10.1155/2011/193797

JM O’ Toole, M Mesbah, B Boashash (2010) **Improved discrete definition of quadratic time–frequency distributions.** IEEE Transactions on Signal Processing, 58(2), 906–911.

*links:* PDF || doi:10.1109/TSP.2009.2031287 || code

JM O’ Toole, M Mesbah, B Boashash (2010) **Accurate and efficient implementation of the time–frequency matched filter.** IET Signal Processing, 4(4), 428–437.

*links:* PDF || doi:10.1049/iet-spr.2009.0104 || code

JM O’ Toole, M Mesbah, B Boashash, (2008) **Algorithms for discrete quadratic time-frequency distributions.** WSEAS Trans. Signal Processing, 4(5), 310–315.

JM O’ Toole, M Mesbah, B Boashash, (2008) **A new discrete analytic signal for reducing aliasing in the discrete Wigner–Ville distribution.** IEEE Transactions on Signal Processing, 56(11), 5427–5434.

*links:* PDF || doi:10.1109/TSP.2008.929325 || code

### Conference Proceedings

J.M. O’ Toole and N.J. Stevenson (2014), **Assessing instantaneous energy in the EEG: a non-negative, frequency-weighted energy operator**, IEEE Int. Conf.
on Eng. in Medicine and Biology (EMBC’14), Chicago, USA, August 2014

*links:* paper ||
poster || code

JM O’ Toole, B. García Zapirain, I Maestro Saiz, A Beatriz Anaya Chen, I Yurrebaso Santamaría (2012) **Estimating the time-varying periodicity of epileptiform discharges in the electroencephalogram** In *Int. Conf. on Info. Science, Signal Process. and Its Applications (ISSPA-12)*, Montreal, Canada, pp. 1262–1267.

*links:* PDF || doi:10.1109/ISSPA.2012.6310480

JM O’ Toole, B García Zapirain (2012) **Glottal Waveform Model for Oesophageal Speech.** In *Proc. Int. Conf. on Info. Systems and Economic Intelligence*, Djerba, Tunisia, pp. 206–209.

*links:* PDF

A Omidvarnia, G Azemi, B Boashash, JM O’ Toole, PB Colditz, S Vanhatalo (2012) **Orthogonalized partial directed coherence for functional connectivity analysis of newborn EEG.** In *Int. Conf. on Neural Info. Process. (ICONIP), Part II, Lecture Notes in Computer Science*, 7664, Vol. 5, Doha, Qatar, pp. 683–691.

*links:* PDF || doi:10.1007/978-3-642-34481-7_83

JM O’ Toole, B. García Zapirain (2011) **Quantifying parameters of a source-filter model for oesophageal speech.** In *Proc. IEEE Int. Symp. on Signal Process. and Info. Tech. (ISSPIT-11)*, pp. 532–537, Bilbao, Spain.

*links:* PDF || doi:10.1109/ISSPIT.2011.6151618

A Omidvarnia, M Mesbah, MS Khlif, JM O’ Toole, PB Colditz, and B Boashash (2011), **Kalman filter-based PDC and dDTF measures for cortical connectivity analysis of newborn EEG**, in *Int. Conf. IEEE Eng. in Medicine and Bio. Society (EMBC-11)*, vol. 1, no. 2, Boston, USA, Aug., pp. 2–5.

A Omidvarnia, M Mesbah, JM O’ Toole, P Colditz, B Boashash (2011), **Analysis of the time-varying cortical neural connectivity in the newborn EEG: a time-frequency approach**, in *Int. Workshop on Systems, Signal Process. and their Applications (WOSSPA-11)*, Tipaza, Algeria, May, p. 4.

S Dong, M Mesbah, BE Lingwood, JM O’ Toole, and B Boashash (2011), **Time–frequency analysis of heart rate variability in neonatal piglets exposed to hypoxia**, *Computing in Cardiology*, Hangzhou, China, pp. 701–704.

T Girier, J O’ Toole, M Mesbah, B Boashash, I Clough, S Wilson, M Fuentes, S Callan, C East, P Colditz (2010) **Detecting fetal movements using non-invasive accelerometers: A preliminary analysis**,’’ in *Proc. Int. Sym. on Signal Process. and its Applications, (ISSPA-10)*, Kuala Lumpur, Malaysia: IEEE, Sep., pp. 508–511.

JM O’ Toole, M Mesbah, B Boashash (2008) **A new definition of discrete quadratic time–frequency distributions.** In *Proc. European Signal Process. Conf (EUSIPCO-08)*, Lausanne, Switzerland, Aug., pp. 1–5.

JM O’ Toole, M Mesbah, B Boashash (2008), **Efficient algorithms for discrete time–frequency distributions,** in *Proc. Applied Computing Conf. (ACC-08)*, Istanbul, Turkey: *World Sci. and Eng. Academy and Society (WSEAS-08)*, May, 27–30, pp. 310–315.

JM O’ Toole, M Mesbah, B Boashash (2007), **A computationally efficient implementation of quadratic time–frequency distributions,** in *Proc. Int. Sym. on Signal Process. and its Applications, (ISSPA-07),* vol. I, Sharjah, United Arab Emirates, Feb. 12–15, pp. 290–293.

JM O’ Toole, M Mesbah, B Boashash (2007), **A new discrete-time analytic signal for reducing aliasing in discrete time–frequency distributions,** in *Proc. European Signal Process. Conf. (EUSIPCO-07)*, Poznán, Poland, Sep., pp. 591–595.

JM O’ Toole, M Mesbah, B Boashash, P Colditz (2007) **A new neonatal seizure detection technique based on the time–frequency characteristics of the electroencephalogram.** In Proc. Int. Sym. on Signal Process. and its Applications, (ISSPA-07), Vol. III, pp. 132–135, Sharjah, United Arab Emirates.

JM O’ Toole, M Mesbah, B Boashash (2005) **Neonatal EEG seizure detection using a time–frequency matched filter with a reduced template set.** In Proc. Int. Sym. on Signal Process. and its Applications (ISSPA-05), Sydney, Australia, pp. 215–218.

JM O’ Toole, M Mesbah, B Boashash (2005) **A discrete time and frequency Wigner–Ville distribution: properties and implementation,** in *Proc. Int. Conf. on Digital Signal Process. and Comm. Systems*, Noosa Heads, Australia, Dec., pp. 19–21.

J O’ Toole and B Boashash (2004) **Optimisation of the realisation of quadratic discrete time-freqeuncy distributions as a Matlab toolbox,** in *Proc. Int. Conf. on Scientific and Eng. Comp.*, Singapore, Dec.

J O’ Toole and T Brazil (2000) **Novel neural network-bessel transform for behavioural modelling of a power amplifier,** in *IEEE High Frequency Postgraduate Colloquium*, Dublin, Ireland, Sep., pp. 45–50.

J O’ Toole and T Brazil (2000) **Novel frequency dependent neural network behavioural model of a power amplifier,** in *Proc. European Microwave Conf. (EMC-00)*, Paris, France, Oct., pp. 257–260.