Publications

PUBLICATIONS:

Peedicail JS, Singh S, Molnar CP, Numerow LM, Gnanakumar R, Josephson CB, Scott J, Federico P, Wiebe S, Pillay N, Calgary Comprehensive Epilepsy Program Collaborators. Impact of ictal subtraction SPECT and PET in presurgical evaluation. Acta Neurol Scand 2020. doi: 10.1111/ane.13362.

Federico P, Ng DW, Bernasconi A, Bernhardt B, Blumenfeld H, Cendes F, Chinvarun Y, Jackson GD, Morgan V, Rampp S, Vaudano AE, Wang I. ILAE neuroimaging task force highlight: review MRI scans with semiology in mind. Epileptic Disord 2020, 22(5)683-687. doi: 10.1684/epd.2020.1202.

Wang I, Bernasconi A, Bernhardt B, Blumenfeld H, Cendes F, Chinvarun Y, Jackson G, Morgan V, Rampp S, Vaudano AE, Federico P. MRI essentials in epileptology: a review from the ILAE imaging taskforce. Epileptic Disord 2020, 22(4)421-437. doi: 10.1684/epd.2020.1174.

Liu J, Peedicail JS, Gaxiola-Valdez I, Li E, Mosher V, WIlson W, Perera T, Singh S, Teskey GC, Federico P, Calgary Comprehensive Epilepsy Program Collaborators. Postictal brainstem hypoperfusion and risk factors for sudden unexpected death in epilepsy. Neurology 2020, 95(12):21694-e1705. doi: 10.1212/WNL.0000000000010360.

Perera T, Gaxiola-Valdez I, Singh S, Peedicail J, Sandy S, Lebel RM, Li E, Milne-Ives M, Szostakiwskyj J, Federico P, Calgary Comprehensive Epilepsy Program Collaborators. Localizing the seizure onset zone by comparing patient postictal hypoperfusion to healthy controls. J Neurosci Res 2020, 98(8):1517-1531. doi: 10.1002/jnr.24646.

Peedicail JS, Almohawes A, Hader W, Starreveld Y, Singh S, Josephson CB, Murphy W, Federico P, Wiebe S, Pillay N, Calgary Comprehensive Epilepsy Program Collaborators. Outcomes of stereoelectroencephalography exploration at an epilepsy surgery center. Acta Neurol Scand 2020, 141(6):463-472. doi: 10.1111/ane.13229.

Spring AM, Pittman DJ, Bessemer R, Federico P. Graph index complexity as a novel surrogate marker of high frequency oscillations in delineating the seizure onset zone. Clinical Neurophysiology 2020, 131(1):78-87. doi: 10.1016/j.clinph.2019.09.019.

Bernasconi A, Cendes F, Theodore W, Gill RS, Koepp M, Hogan RE, Jackson GD, Federico P, Labate A, Vaudano AE, Blümcke A, Ryvlin P, Bernasconi N. Recommendations for the use of structural MRI in the care of patients with epilepsy: A consensus report from the ILAE Neuroimaging Task Force. Epilepsia 2019, 60:1054-1068. doi: 10.1111/epi.15612.

Appendino JP, Boelman C, Brna PM, Burneo JG, Claasen CS, Connolly MB, De Guzman M, Federico P, Floyd D, Huntsman R, Javidan M, Jetté N, Jurasek LL, Keezer M, Lau JC, McCoy B, McLachlan R, Ng MC, Nguyen D, Reid A, Rho JM, Snead C, Tellez-Zenteno JF, Wang L, Zak. Position statement on the use of medical cannabis for the treatment of epilepsy in Canada. Can J Neurosci 2019, 30:1-39. doi: 10.1017/cjn.2019.282.

Basiri R, Federico P, Lebel RC. Transverse relaxometry with transmit field constrained stimulated echo compensation. Magnetic Resonance Materials in Physics, Biology and Medicine 2019, 32(6):669-677. doi: 10.1007/s10334-019-00769-9.

Wahby S, Karnik V, Brobbey A, Wiebe S, Sajobi TT, Josephson CB, Calgary Comprehensive Epilepsy Programme collaborators. Cannabis use is both independently associated with and mediates worse psychosocial health in patients with epilepsy. J Neurol Neurosurg Psychiatry 2019, 90(8):945-951. doi: 10.1136/jnnp-2018-319780.

Li E, d’Esterre CD, Lee TY, Menon B, Federico P. Quantitatively detecting postictal hypoperfusion in patients with focal epilepsy using CT perfusion: Determining cross-modality comparisons and electrode artifacts. J Neuroscience Methods 2019, 314:13-20. doi: 10.1016/j.jneumeth.2019.01.004.

Li E, d’Esterre CD, Gaxiola-Valdez I, Lee T-Y, Menon B, Peedicail JS, Jetté N, Josephson CB, Wiebe S, Teskey GC, Federico P. CT perfusion measurement of postictal hypoperfusion: localization of the seizure onset zone and patterns of spread. Neuroradiology 2019, 61:991-1010. doi: 10.1007/s00234-019-02227-8.

Arnold A, Parkins MD, Hamilton LE, Hader W, Federico P. Recurrent HSV encephalitis after epilepsy surgery. Canadian Journal of Neurological Sciences 2019, 46(2):261-263. doi: 10.1017/cjn.2018.385.

Subota A, Khan S, Josephson CB, Manji S, Lukmanji S, Roach P, Wiebe S, Buchhalter J, Federico P, Teskey GC, Lorenzetti D, Jetté N. Signs and symptoms of the postictal period in Epilepsy: A systematic review and meta-analysis. Epilepsy & Behaviour 2019, 94:243-25. doi: 10.1016/j.yebeh.2019.03.014.

Josephson CB, Engbers JDT,  Jetté N, Patten SB, Singh S, Sajobi TT, Marshall  D, Agha-Khani Y,Federico P, Mackie A, Macrodimitris S,  McLane B, Pillay N,  Sharma R,Wiebe S. Prediction tools for psychiatric adverse effects following levetiracetam prescription. JAMA 2019, 76:440-446. doi: 10.1001/jamaneurol.2018.4561.

Spring AM Pittman DJ, Aghakhani Y, Jirsch J, Pillay N, Bello-Espinosa LE, Josephson C, Federico P. Generalizability of high frequency oscillation evaluations in the ripple band. Frontiers in Neurology 2018, 9:510. doi: 10.3389/fneur.2018.00510.

Gaxiola-Valdez I, Singh S, Perera T, Sandy S, Li E, Federico P. Seizure onset zone localization using postictal hypoperfusion detected by arterial spin labeling MRI. Brain 2017, 140:2895-2911. doi: 10.1093/brain/awx241.

Farrell JS, Colangeli R, Wolff MD, Wall AK, Phillips TJ, George A, Federico P, Teskey GC. Postictal hypoperfusion/hypoxia provides the foundation for a unified theory of seizure-induced brain abnormalities and behavioural dysfunction. Epilepsia 2017, 58:1493-1501. doi: 10.1111/epi.13827.

Lang S, Gaxiola-Valdez I, Partlo LA, Kelly J, Goodyear BG, Federico P. Functional connectivity in the fronto-parietal network: indicator of preoperative cognitive function and cognitive outcome following surgery in patients with glioma. World Neursurgery 2017, 105:913-922.e2. doi: 10.1016/j.wneu.2017.05.149.

Dash D, Primrose S, Ladino L, Moien-Afshari F, Mazepa L, Elliott C, Mirsatarri S, Federico P, Bui E, Hunter G, Ramachandrannair R, Sharma R, Melendres P, Nikkel J, Nguyen D, Almubarak S, Rigby M, Appendino J, Tellez-Zenteno J. Update of Minimal Standards for Electroencephalography in Canada. Canadian J Neurological Science 2017, 44:631-642. doi: 10.1017/cjn.2017.217.

Van Vliet EA, Dedeurwaerdere S, Cole AJ, Friedman A, Koepp MJ, Potschka H, Immonen R, Pitkänen A, Federico P. Workshop on Neurobiology of Epilepsy appraisal: imaging biomarkers in epilepsy. Epilepsia 2017, 58:315-330. PMID 27883181.

Spring AM, Pittman DJ, Aghakhani Y, Jirsch J, Pillay N, Bello-Espinosa L, Josephson C, Federico P. Interrater reliability of visually evaluated high frequency oscillations. Clinical Neurophysiology 2017, 128:433-441. PMID: 28160749.

Crooks R, Bell M, Patten SB, Wiebe S, Holroyd-Leduc J, Bulloch A, Macrodimitris S, Mackie A, Sauro KM, Federico P, Jetté N. Mind the gap: exploring information gaps for the development of an online resource hub for epilepsy and depression. Epilepsy and Behaviour 2017, 70:18-23. doi: 10.1016/j.yebeh.2017.03.005.

Lang S, Cadeaux M, Opoku-Darko M, Gaxiola-Valdez I, Partlo LA, Goodyear BG, Federico P, Kelly J. Assessment of cognitive, emotional, and motor domains in patients with diffuse gliomas utilizing the NIH toolbox battery. World Neurosurgery 2017, 99:448-456. PMID: 28039096.

Farrell JS, Gaxiola-Valdez I, Wolff MD, David LS, Dika HI, Geeraert BL, Wang XR, Singh S, Spanswick SC, Dunn JF, Antle MC, Federico P*, Teskey GC*. Postictal behavioural impairments are due to a severe prolonged hypoperfusion/hypoxia event that is COX-2 dependent. eLife 2016, 5:e19352 1-24. PMID: 27874832, Podcast at https://elife.elifesciences.org/podcast/episode36?autoplay=1 *co-senior author

Vinette SA, Premji S, Beers CA, Gaxiola-Valdez I, Pittman DJ, Slone EG, Goodyear BG, Federico P. Pre-ictal BOLD alterations: two cases of patients with focal epilepsy. Epilepsy Research 2016, 127:207-220. PMID: 27635629.

Josephson CB, Engbers JDT, Sajobi TT, Jetté N, Agha-Khani Y, Federico P, Murphy WF, Pillay N, Wiebe S. An investigation into the psychosocial effects of the postictal state. Neurology 2016, 86:723-730. PMID 26819455.

Josephson CB, Engbers JDT, Sajobi TT, Jetté N, Agha-Khani Y, Federico P, Murphy WF, Pillay N, Wiebe S. Towards a clinically informed, data driven definition of elderly-onset epilepsy. Epilepsia 2016, 57:298-305. PMID 26648047.

Iaria G, Wentzel GM, Boon J, Burles F, Liu I, Federico P. The effects of selective amygdalo-hippocampectomy on different spatial orientation skills. Current Trends in Neurology 2016, 10:39-52.

Beers CA, Williams RJ, Gaxiola-Valdez I, Pittman DJ, Kang AT, Agha-Khani Y, Goodyear BG, Pike GB, Federico P. Patient specific hemodynamic response functions associated with interictal discharges recorded via simultaneous intracranial EEG-fMRI. Human Brain Mapping 2015, 36:5252-64. PMID: 26417648.

Vinette SA, Dunn JF, Slone E, Federico P. Artifact reduction in long-term monitoring of cerebral hemodynamics using near-infrared spectroscopy. Neurophotonics 2015, 2:025004 PMID: 26158008.

Aghakhani Y, Beers CA, Pittman DJ, Gaxiola-Valdez I, Goodyear BG, Federico P. Co-localization between the BOLD response and epileptiform discharges recorded by simultaneous intacranial EEG-fMRI at 3 T. NeuroImage: Clinical 2015, 7:755-763. PMID 25844327.

Woodward KE, Gaxiola-Valdez I, Mainprize DG, Grossi MV, Goodyear BG, Federico P. Recent seizure activity alters motor organization in frontal lobe epilepsy as revealed by task-based fMRI. Epilepsy Research 2014, 108:1286-98. PMID 25052708.

Woodward KE, Federico P. Examining motor network disturbances in patients with frontal lobe epilepsy using fMRI. Molecular & Cellular Epilepsy 2014, 1:e247. doi: 10.14800/mce.247.

Ibrahim G, Morgan B, Lee W, Smith ML, Donner E, Wang F, Beers C, Federico P, Taylor M, Doesburg S, Rutka J, Snead. Impaired development of intrinsic connectivity networks in children with medically-intractable localization-related epilepsy. Human Brain Mapping 2014, 35:5686-700. PMID: 24976288.

Jirsh J, Gross DW, Jetté N, Federico P, Dubeau F, et al. Canadian epileptologists’ counseling of drivers amidst guideline inconsistencies. Canadian Journal of Neurological Sciences 2014, 41:413-420. PMID: 24878463.

Roberts JI, Hrazdil C, Wiebe S, Sauro K, Hanson A, Federico P, Pillay N, Murphy W, Vautour M, Jetté. Feasibility of using an online tool to assess appropriateness for an epilepsy surgery evaluation. Neurology 2014, 83:913-919. PMID 25107882.

Dedeurwaerdere S, Shultz SR, Federico P, Engel J Jr. WONOEP appraisal: New systemic functional imaging technologies to study the brain in experimental models of epilepsy. Epilepsia 2014, 55:819-828. PMID 24836499.

Sauro KM, Macrodimtris S, Krassman C, Wiebe S, Pillay N, Federico P, Murphy W, Jetté N. Quality indicators in an epilepsy monitoring unit. Epilepsy & Behavior 2014, 33:7-11. PMID: 24561652.

Woodward KE, Gaxiola-Valdez I, Goodyear B, Federico P. Frontal lobe epilepsy alters functional connections within the brain's motor network: A resting-state fMRI study. Brain Connectivity 2014, 4:91-99. PMID 24329128.

Wiens C, Goodyear BG, Goel A, Federico P, Hader W, Goyal A. Presurgical language fMRI and postsurgical deficits: a single centre experience. Canadian Journal of Neurological Sciences 2013, 40:819-23. PMID 24257223.

Hrazdil C, Roberts JI, Wiebe S, Sauro K, Vautour M, Hanson A, Murphy W, Pillay N, Federico P, Jetté. Patient perceptions and barriers to epilepsy surgery: Evaluation in a large health region. Epilepsy & Behaviour 2013, 28:52-65.

Boucousis SM, Beers CA, Cunningham CJB, Gaxiola I, Pittman DJ, Goodyear BG, Federico P. Feasibility of an intracranial EEG-fMRI protocol at 3T: Risk assessment and image quality. NeuroImage 2012, 63:1237-1248.

Cunningham CBJ, Goodyear BG, Badawy R, Zaamout F, Pittman DJ, Beers CA, Federico P. Intracranial EEG-fMRI analysis of focal epileptiform discharges in humans. Epilepsia 2012, 53:1636-1648.

Slone E, Westwood E, Dhaliwal, Federico P, Dunn JF. Near-infrared spectroscopy shows pre-ictal hemodynamic changes in temporal lobe epilepsy. Epileptic Disorders 2012, 14:371-378.

Sauro K, Krassman C, Jetté N, Knox J, Suddes M, Mercer E, Rigby M, Wiebe S, Pillay N, Federico P, Murphy W, Macrodimitris S. Experience and satisfaction of staff working in a seizure monitoring unit. Canadian Journal Neuroscience Nursing 2012, 34:33-38.

Beers CA, Federico P. Functional MRI applications in epilepsy surgery. Canadian Journal of Neurological Sciences 2012, 39:271-285.

Téllez-Zenteno JF, Ronquillo LH, Jette N, Burneo JG, Nguyen DK, Donner EJ, Sadler M, Javidan M M, Gross DW, Wiebe S; Canadian Epilepsy Surgery Study Group. Discontinuation of antiepileptic drugs after successful epilepsy surgery: A Canadian survey. Epilepsy Research 2012, 102:23-33.

Kramer A, Jetté N, Pillay N, Federico P, Zygun. Epileptiform activity in neurocritical care patients: prevalence, risk factors and prognostic implication. Canadian Journal of Neurological Sciences 2012, 39:328-337.

Metcalfe A, Roberts JI, Abdulla F, Wiebe S, Hanson A, Federico P, Jetté N. Patient knowledge about issues related to pregnancy in epilepsy: a cross-sectional study. Epilepsy and Behavior 2012, 4:65-9.

Roberts JI, Sauro K, Jetté N, Osiowy K, Knox J, Wiebe S, Pillay N, Federico P, Murphy W, Macrodimitris S. Using a standardized assessment tool to measure patient experience on a seizure monitoring unit compared to a general neurology unit. Epilepsy & Behavior 2012, 24:54-58.

Kosior RK, Lauzon ML, Frayne R, Federico P. Voxel-based relaxometry for cases of an unresolved epilepsy diagnosis. Epilepsy Research 2012, 99:46-54.

Jensen E, Hargreaves IS, Pexman PM, Bass A, Goodyear BG, Federico P. Abnormalities of lexical and semantic processing in left temporal lobe epilepsy: An fMRI study. Epilepsia 2011, 52:2013-2021.

Kosior RK, Lauzon ML, Federico P, Frayne R. Algebraic T2 estimation improves T2 relaxometry of right temporal lobe epilepsy by MR T2 relaxometry. NeuroImage 2011, 58:189-197.

Jensen E, Hargreaves I, Bass A, Pexman P, Goodyear BG, Federico P. Cortical reorganization and reduced efficiency of visual word recognition in right temporal lobe epilepsy: a functional MRI study. Epilepsy Research 2011, 93:155-163.

Sumar I, Kosior RK, Frayne R, Federico P. Hippocampal T2 abnormalities in healthy adults. Epilepsy Research 2011, 95:273-276.

Badawy R, Pillay N, Jetté N, Al-Sarawi A, Wiebe S, Federico P. A blinded comparison of continuous versus sampled review of video-EEG monitoring data. Clinical Neurophysiology 2011, 122:1086-1090.

Roberts JI, Metcalfe A, Abdulla F, Wiebe S, Hanson A, Federico P, Jetté N. Neurologist’s and resident’s knowledge of women’s issues related to pregnancy in epilepsy. Epilepsy and Behaviour 2011, 22:358-363.

Federico P. Language reorganization in early onset temporal lobe epilepsy. Epilepsia 2011, 52 (Suppl 4):47-48.

Sharkey RJ, Kosior RK, Federico P, Frayne R. Age effects on voxel-based relaxometry used for epileptic patients. Epilepsy Research 2010, 92:41-47.

Pinnegar CR, Khosravani H, Federico P. Time-frequency phase analysis of ictal EEG recordings with the S-transform. IEEE Trans Biomed Eng 2009, 56:2583-2593.

Kosior RK, Lauzon ML, Frayne R, Federico P. Single-subject voxel-based relaxometry for clinical assessment of temporal lobe epilepsy. Epilepsy Research 2009, 86:23-31.

Khosravani H, Mehrota N, Rigby M, Hader WJ, Pinnegar CR, Pillay N, Wiebe S, Federico P. Spatial localization and time-dependant changes of electrographic high frequency oscillations in human temporal lobe epilepsy. Epilepsia 2009, 50:605-616.

Cunningham CJ, Zaamout Mel-F, Goodyear B, Federico P. Simultaneous EEG-fMRI in human epilepsy. Canadian Journal of Neurological Sciences 2008, 35:420-435.

Alqahtani S, Federico P, Myers RP. A case of valproate-induced hyperammonemic encephalopathy: look beyond the liver. Canadian Medical Association Journal 2007, 177:568-569. 

Archer JS, Abbott DF, Waites AB, Abbott DF, Federico P, Jackson GD. Event-related fMRI of myoclonic jerks arising from dysplastic cortex. Epilepsia 2006, 47:1487-1492.

Sylaja PN, Dzialowski I, Krol A, Roy J, Federico P, Demchuk AM. Role of CT angiography in thrombolysis decision-making for patients with presumed seizure at stroke onset. Stroke 2006, 37:915-917.

Peets AD, Berthiaume LR, Bagshaw SM, Federico P, Doig CJ, Zygun DA. Prolonged refractory status epilepticus following acute traumatic brain injury – a case report of excellent neurologic recovery. Critical Care 2005, 9:R725-8.

Federico P, Abbott DF, Briellmann RS, Jackson GD. Functional MRI of the pre-ictal state. Brain 2005, 128:1811-1817.

Khosravani H, Pinnegar CR, Mitchell JR, Bardakjian BL, Federico P, Carlen PL. Increased high frequency oscillations precede in vitro low Mg2+ seizures. Epilepsia 2005, 46:1188-1197.

Federico P, Archer JS, Abbott DF, Jackson GD. Cortical/subcortical BOLD changes associated with epileptic discharges: an EEG-fMRI study at 3T. Neurology 2005, 64:1125-30.

Wellard RM, Briellmann RS, Wilson JC, Kalnins RM, Anderson DP, Federico P,  Fabinyi GCA, Scheffer IE, Harvey AS, Jackson GD. Longitudinal study of MRS metabolites in Rasmussen’s encephalitis. Brain 2004, 127:1302-12.  

Labate A, Briellmann RS, Harvey AS, Berkovic SF, Federico P, Kalnins RM, Fabinyi GC, Jackson GD. Temporal lobe dysembryoplastic neuroepithelial tumour: significance of discordant interictal spikes. Epileptic Disord 2004, 6:107-14.

Egan G, Silk T, Zamarripa F, Williams J, Federico P, Cunnington R, Carabott L, Blair-West J, Shade R, McKinley M, Farrell M, Lancaster J, Jackson G, Fox P, Denton D. Neural correlates of the emergence of consciousness of thirst. PNAS 2003, 100:15241-6.

Opdam HI, Federico P, Jackson, GD, Buchanan J, Abbott DF, Fabinyi GCA, Syngeniotis A, Vosmansky M, Archer JS, Wellard RM, Bellomo R. A Sheep Model for the Study of Focal Epilepsy With Concurrent Intracranial EEG and Functional MRI. Epilepsia 2002, 43:779-87.

Federico P, Zochodne DW. Reversible parkinsonism and hyperammonemia associated with portal vein thrombosis. Acta Neurologica Scandinavica 2001, 103:198-200

Federico P,  Zochodne DW, Hahn AF, Brown WF, Feasby TE. Multifocal motor neuropathy improved by IVIG. A randomized double-blind, placebo-controlled study. Neurology 2000, 55:1256-1262.

Federico P MacVicar BA. Imaging the induction and spread of seizure activity in the isolated brain of the guinea-pig: the roles of GABA and glutamate receptors. Journal of Neurophysiology 1996, 76:3471-3492.

Federico P, Borg SG, Salkauskus AG, MacVicar BA. Mapping patterns of neuronal activity and seizure propagation by imaging intrinsic optical signals in the isolated whole brain of the guinea pig. Neuroscience 1994, 58:461-480.

Federico P, Veale WL, Pittman QJ. Vasopressin-induced antipyresis in the medial amygdaloid nucleus of the conscious rat. American Journal of Physiology (Reg. Int. Comp. Physiol) 1992, 262:R901-908.

Federico P, Malkinson TJ, Cooper KE, Pittman QJ, Veale WL. Vasopressin perfusion within the medial amygdaloid nucleus attenuates prostaglandin fever in the urethane-anaesthetized rat. Brain Research 1992, 587:319-326.

Mathieson WB, Federico P, Veale WL, Pittman QJ. Single-unit activity in the bed nucleus of the stria terminalis during fever. Brain Research 1989, 486:49-55.

BOOK CHAPTERS, BOOK REVIEWS, EDITORIALS, OR PROCEEDINGS

Federico P. Simultaneous EEG and fMRI: Recording, analysis, and application (eds. Ullsperger M, Debener S). Book review. Neurology 2010, 75:1855.

Pinnegar CR, Khosravani H, Federico P. Time-time distributions for discrete wavelet transformations. IN: Pseudo-Differential Operators: Complex Analysis and PDEs. (eds. Schulze B, Wong MW), Birkhäuser, Boston 2010, 269-276.

Federico P, Alqahanti S, Myers RP. Possible new clinical sign of hyperammonemia. Canadian Medical Association Journal 2008, 178:326.

MacVicar BA, Watson TWJ, LeBlanc FE, Borg SG, Federico P. Mapping neuronal activity patterns using intrinsic optical signals: from isolated brain slices to the intact human brain. IN: Optical Imaging of Brain Function and Metabolism. (eds. Dirnagl U, Einhäeudl KM, Villringer A), Springer, London 1993, 71-79.

Federico P, Willcox BJ, Cooper KE, Veale WL. Vasopressin-induced antipyresis and convulsive-like activity in the medial amygdaloid nucleus. IN:  Thermoregulation:  The Pathological Basis of Clinical Disorders. 8^th International Symposium, Pharmacology of Thermoregulation, Kananaskis, AB, Canada. (eds. Lomax P, Schönbaum), Karger, Basel 1992, 19-24.