Research

https://www.healpsychotherapy.ca/research/

 

https://neurofeedback-netzwerk.org/news/o8riusmf83tdrnblanfncdcd8qgpt7

 

ILF Neurofeedback Mechanisms and Neurophysiology

Nuno M.P. de Matos , Philipp Stampfli , Erich Seifritz , Mike Brügger , Disassembling

Infra-Low-Frequency Neurofeedback: A neurophysiological investigation of its

feedback

components, NeuroImage (2025), doi:

https://doi.org/10.1016/j.neuroimage.2025.121647

Dobrushina, O. R., Dobrynina, L.A., Arina, G.A., Kremneva, E., Novikova, E.S.,

Gubanova. M.V., Pechenkova, E.V., Suslina, A.D., Aristova, V.V., Trubitsyna, V.V. &

 

Krotenkova, M.V. (2022). Enhancing Brain Connectivity With Infra-Low Frequency

Neurofeedback During Aging: A Pilot Study. Front. Hum. Neurosci. 16:891547. doi:

10.3389/fnhum.2022.891547

Fleischman, M. J. (2022). Documenting the Impact of Infra Low Frequency

 

Neurofeedback on Underserved Populations with Complex Clinical Presentations.

Front. Hum. Neurosci. 16:921491. doi: 10.3389/fnhum.2022.921491

Kropotov J.D. (2022). The enigma of infra-slow fluctuations in the human EEG. Front.

Hum. Neurosci. 16:928410. doi: 10.3389/fnhum.2022.928410

 

Dobrushina, O., Vlasova, R.M., Rumshiskaya, A.D., Litvionova, L.D., Mershina, E.A.,

Sinitsyn, V.E. and Pechenkova, E.V. (2020). Modulation of Intrinsic Brain Connectivity

by Implicit Electroencephalographic Neurofeedback. Frontiers in Human

Neuroscience, 14: 192.

Grin-Yatsenko, V., Kara, O., Evdokimov, S., Gregory, M., Othmer, S. & Kropotov, J.

(2020). Infra-Low Frequency Neurofeedback Modulates Infra-Slow Oscillations of

Brain Potentials: A Controlled Study. Journal of Biomedical Engineering and

Research, 4, 1-11.

Dobrushina, O., Pechenkova, E.V., Vlasova, R., Rumshiskaya, A.D., Litvinova, L.,

Mershina, E. and Sinitsyn, V. (2018). Exploring the brain contour of implicit infra-low

frequency EEG neurofeedback: a resting state fMRI study. Int. J. Psychophysiol. 131,

S76 (2018).

Grin-Yatsenko, V. A., Ponomarev, V. A., Kara, O., Wandernoth, B., Gregory, M., Ilyukhina,

  1. A., & Kropotov, J. D. (2018). Effect of Infra-Low Frequency Neurofeedback on

Infra-Slow EEG Fluctuations. In Biofeedback. IntechOpen

Arina, G., Osina, E., Dobrushina, O. & Aziatskaya, G. (2017). Sham-neurofeedback as

an intervention: Placebo or nocebo? European Psychiatry, 41, 253-254.

 

Altan, S., Berberoglu, B., Canan, S. & Dane, S. (2016). Effects of neurofeedback

therapy in healthy young subjects. Clin invest Med 39, 27–30.

Dobrushina, O., Vlasova, R., Pechenkova, E.V., Rumshiskaya, A.D., Litvinova, L.,

Mershina, E.A. and Sinitsyn, V. (2015). The effect of Infra-Low Frequency

Neurofeedback on default mode network of the brain. Conference paper at Applied

Neuroscience and Social Well being, Moscow. (In Russian language).

Othmer S., Othmer S.F., Kaiser D. & Putman J. (2013). Endogenous Neuromodulation

at Infra-Low Frequencies. Seminars in Paediatric Neurology, 20(4), 246-257.

Legarda S., McMahon D., Othmer S. & Othmer SF. (2011). Clinical Neurofeedback:

Case Studies, Proposed Mechanism and Implication for Paediatric Neurology

Practice. Journal of Child Neurology, 26(8), 1045-1051.

Othmer S., Othmer SF. & Legarda S. (2011). Clinical Neurofeedback: Training Brain

Behavior. Pediatric Neurology and Psychiatry, 2, 67-73.

Grin-Yatsenko, V. A., Ponomarev, V. A. & Kropotov, J. D. The Changes of the Infra-Slow

EEG Fluctuations of the Brain Potentials under Influence of Infra-Low Frequency

Neurofeedback. J. Evol. Biochem. Physiol. 59, 831–840 (2023).

 

ILF Neurofeedback in latest clinical application

Addiction

Corominas-Roso, M., Ibern, I., Capdevila, M., Ramon, R., Roncero, C. &

Ramos-Quiroga, J.A. (2020). Benefits of EEG-Neurofeedback on the Modulation of

Impulsivity in a Sample of Cocaine and Heroin Long-Term Abstinent Inmates: A Pilot

Study. International Journal of Offender Therapy and Comparative Criminology, 64(12),

1275-1298.

 

ADHD

Ölçüoğlu, R., Kozanoğlu, I., Mıdık, M. & Ates, E. G. (2024). The Impact of

Neurofeedback Training on Cognitive Abilities Assessed by the Wechsler Intelligence

Scale for Children-Revised in Children with Attention Deficit: A Randomized

Single-Blind Sham-Controlled Study. Clin. EEG Neurosci. 55(6), 603-612.

doi:10.1177/15500594241279997

Wührer, G. & Kolbe, S. (2024). Klinisches ILF-Neurofeedback mit Kindern und

Jugendlichen. Gehirnfunktions-Training bei psychischen Störungsbildern – eine

Übersicht mit Anwendungsbeispielen. Forum für Kinder- und Jugendpsychiatrie 4,

62–87. (In German language)

 

Ströhle, G. (2023). Infra-Low Frequency Training. In: Sidiropoulos, K. (eds).

EEG-Neurofeedback bei ADS und ADHS. Springer, Berlin, Heidelberg. doi:

10.1007/978-3-662-65726-3_17

Schneider, H., Riederle, J. & Seuss, S. (2021): Therapeutic Effect of Infra-Low

Frequency Neurofeedback Training on Children and Adolescents with ADHD. In:

Brain-Computer Interface, Vahid Asadpour ed., IntechOpen Limited, 2021:13, 75-92.

doi: 10.5772/intechopen.97938

Prinz, W. (2015): Neurofeedbacktherapie als Spezialtherapieangebot. Psychopraxis.

Neuropraxis 18, 180–183. (In German language)

Flatz, T. & Gleußner, M. (2014): Neurofeedbacktherapie bei ADHS und Autismus.

Pädiatrie & Pädologie 49, 22–27. (In German language)

Ahlstrand, P. & Grattbeck, M. (2013): Neurofeedback – ett behandlingsalternativ vid

ADHD. Specialised Thesis in Clinical Psychology/Neuropsychology. (In Swedish

language)

 

Aging & Dementia

Dobrushina, O. R., Dobrynina, L.A., Arina, G.A., Kremneva, E., Novikova, E.S.,

Gubanova. M.V., Pechenkova, E.V., Suslina, A.D., Aristova, V.V., Trubitsyna, V.V. and

Krotenkova, M.V. (2022). Enhancing Brain Connectivity With Infra-Low Frequency

Neurofeedback During Aging: A Pilot Study. Front. Hum. Neurosci. 16, 1–12.

Legarda, S.B., Michas-Martin, P. A. & McDermott, D. (2022). Managing Intractable

Symptoms of Parkinson’s Disease: A Nonsurgical Approach Employing Infralow

Frequency Neuromodulation. Front. Hum. Neurosci. 16:894781. doi:

10.3389/fnhum.2022.894781

 

Anxiety disorder

Wührer, G., Kolbe, S., Bolduan, U., Icking, A., Schneider, H. (2025). Klinisches

ILF-Neurofeedback mit Kindern und Jugendlichen. Training bei psychischen

Störungsbildern – Studienlage, Anwendungsbeispiele und Kostenerstattung. Forum

für Kinder- und Jugendpsychiatrie 1, 42–68. (In German language)

 

Autism (ASD)

Saleem, S. & Habib, S. H. (2024). Effect of Infra Low Frequency (ILF) neurofeedback

training on EEG in children with autism spectrum disorders. Pakistan J. Med. Sci.

40(7), 1397-1402.

 

Wührer, G. & Kolbe, S. (2024). Klinisches ILF-Neurofeedback mit Kindern und

Jugendlichen Gehirnfunktions-Training bei psychischen Störungsbildern – eine

Übersicht mit Anwendungsbeispielen. Forum für Kinder- und Jugendpsychiatrie 4,

62–87. (In German language)

Esmaeilzadeh Kanafgourabi S. N., Shabani, M., Mirchi, Z., Aliyari, H. & Mahdavi, P.

(2023): The impact of ILF neurofeedback on inhibitory control in high-functioning

adolescents with autism spectrum disorder: Preliminary evidence of a randomized

controlled trial, Applied Neuropsychology: Child 14(2), 1-19. doi:

10.1080/21622965.2023.2258247

Saleem, S. & Habib, S. H. (2023). Neurofeedback Recuperates Cognitive Functions in

Children with Autism Spectrum Disorders (ASD). Journal of Autism and

Developmental Disorders 54(8), 1-11. doi: 10.1007/s10803-023-06037-7

Rauter, A., Schneider, H. & Prinz, W. (2022): Effectivity of ILF Neurofeedback on

Autism spectrum disorder – a Case Study. Front. Hum. Neurosci. 16, 1-6.

Prinz, W. (2015): Neurofeedbacktherapie als Spezialtherapieangebot. psychopraxis.

neuropraxis 18, 180-183. (In German language)

Flatz, T. & Gleußner, M. (2014): Neurofeedbacktherapie bei ADHS und Autismus.

Pädiatrie & Pädologie 49, 22–27. (In German language)

Othmer S. & Othmer S.F. (2011): Neurofeedback for the Autism Spectrum. In K. Siri

and T. Lyons (Eds.), Cutting-Edge Therapies for Autism (262-267). Skyhorse

Publishing.

 

Brain Injury & Traumatic Brain Injury (TBI)

Carlson, J., Webster Ross, G, Tyrrell, C., Fiame, B., Nunokawa, C., Siriwardhana, C.,

Schaper, K. (2025). Infra-low frequency neurofeedback impact on post-concussive

symptoms of headache, insomnia and attention disorder: Results of a randomized

control trial. Explore 21, 103137. doi: 10.1016/j.explore.2025.103137

Annaheim C, Hug K, Stumm C, Messerli M, Simon Y and Hund-Georgiadis M (2022):

Neurofeedback in patients with frontal brain lesions: A randomized, controlled

double-blind trial. Front. Hum. Neurosci. 16:979723. doi:

10.3389/fnhum.2022.979723

Carlson, J. & Ross, G. (2021): Neurofeedback Impact on Chronic Headache, Sleep

and Attention Disorders Experienced by Veterans with Mild Traumatic Brain Injury: A

Pilot Study. Biofeedback, 49(1), 2-9.

 

Chronic Illness

 

Borchert, N., Eliasson, H., Hamne, G., Hodgson, K., Lyche, T., Mayer-Pelinski, R.,

Praesto, F., Radu, G., Sandström, U. & Stapleton, P.B. (2023). Learning from Läklabbet:

An integrative transdisciplinary eco therapeutic treatment approach designed to

promote resource capacity in people recovering from chronic ill health . Open Access

Digital Archive, 2023, 1–9.

Depression

Grin-Yatsenko, V. A., & Kropotov, J. D. (2020): Effect of infra-low frequency

neurofeedback on the functional state of the brain in healthy and depressed

individuals. In H. W. Kirk (Ed.), Restoring the brain: Neurofeedback as an integrative

approach to health (2nd ed.). Routledge, pp. 244-255.

Grin-Yatsenko, V. A. et al. (2018): Infra-low frequency neurofeedback in depression:

Three case studies. NeuroRegulation 5, 30–42.

Tschiesner, R. (2023). Infra-Low-Frequency Neurofeedback Treatment in Dysthymia :

A Case Study. Behav. Sci. (Basel). 13(9), 711. doi: 10.3390/bs13090711.

 

Eating disorders

Winkeler, A., Winkeler, M. & Imgart, H. (2022): Infra-Low Frequency Neurofeedback in

the Treatment of Patients With Chronic Eating Disorder and Comorbid

Post-Traumatic Stress Disorder. Front. Hum. Neurosci. 16:890682. doi:

10.3389/fnhum.2022.890682

Leong, S. L., Vanneste, S., Lim, J., Smith, M., Manning, P., & De Ridder, D. (2018): A

randomised, double-blind, placebo-controlled parallel trial of closed-loop infraslow

brain training in food addiction. Scientific reports, 8(1), 1-9.

Chirita-Emandi, A., & Puiu, M. (2014): Outcomes of neurofeedback training in

childhood obesity management: A pilot study. Journal of Alternative and

Complementary Medicine, 20(11), 831–837.

 

Fibromyalgia, Multiple Sclerosis, Concussion

Legarda, S. B., Lahti, C. E., Mcdermott, D. & Michas-martin, A. (2022): Use of Novel

Concussion Protocol With Infralow Frequency Neuromodulation Demonstrates

Significant Treatment Response in Patients With Persistent Postconcussion

Symptoms, a Retrospective Study. Front. Hum. Neurosci. 16:894758. doi:

10.3389/fnhum.2022.894758

Ingvaldsen, S. H. (2019): QEEG and Infra-Low Frequency Neurofeedback Training in

Fibromyalgia: A Pilot Study Master’s thesis in Psychology. Norwegian University of

Science and Technology, Dept. of Psychology, NTNU.

 

Lamprecht, C. E. (2019): The effect of neurofeedback in post-concussion syndrome.

Doctoral dissertation, Stellenbosch University.

Dobrushina, O. R., Varako, N. A., Kovyazina, M. S. & Zinchenko, Y. P. (2016):

Combination of Neurofeedback and cognitive training in attention deficit due to

multiple sclerosis. Int. J. Psychophysiol. 108, 118.

 

Insomnia

Orakpo N, Yuan C, Olukitibi O, Burdette J and Arrington K (2022): Does Virtual Reality

Feedback at Infra-Low Frequency Improve Centralized Pain With Comorbid Insomnia

While Mitigating Risks for Sedative Use Disorder?: A Case Report. Front. Hum.

Neurosci. 16:915376. doi: 10.3389/fnhum.2022.915376

Moore, P.T. (2022): Infra-low frequency neurofeedback and insomnia as a model of

CNS dysregulation. Front. Hum. Neurosci. 16:959491. doi:

10.3389/fnhum.2022.959491

 

Migraine & Tension Headache

Arina, G.A., Dobrushina, O.R., Shvetsova, E.T., Osina, E.D., Meshkov, G.A., Aziatskaya,

G.A., Trofimova, A.K., Efremova, I.N., Martunov, S.E. & Nikolaeva, V.V. (2022).

Infra-Low Frequency Neurofeedback in Tension-Type Headache: A Cross-Over

Sham-Controlled Study. Front. Hum. Neurosci. 16:891323. doi:

10.3389/fnhum.2022.891323

Legarda, S.B., Michas-Martin, P. A. & McDermott, D. (2022). Remediating Intractable

Headache: An Effective Nonpharmacological Approach Employing Infralow

Frequency Neuromodulation. Front. Hum. Neurosci. 16:894856. doi:

10.3389/fnhum.2022.894856

Dobrushina, O., Arina, G., Osina, E. & Aziatskaya, G. (2017): Clinical and psychological

confirmation of stabilizing effect of neurofeedback in migraine. European Psychiatry,

41(S1), p253. doi: 10.1016/j.eurpsy.2017.02.045

 

Peak Performance

Bakhtafrooz, S., Kavyani, M., Farsi, A. & Alboghebeish, S. (2025). The effect of infra

low frequency – neurofeedback training on pistol shooting performance and

attention in semi-skilled players. Front. Hum. Neurosci. 19:1487737. doi:

10.3389/fnhum.2025.1487737

 

Othmer, S. F. S. & Othmer, S. F. S. (2011). Performance Enhancement Applications of

Neurofeedback. In: Case Studies in Applied Psychophysiology: Neurofeedback and

Biofeedback Treatments for Advances in Human Performance, 17–30.

doi:10.1002/9781119959984.ch2

 

Persistent postural-perceptual dizziness

Sasu R (2022). Infra-low frequency neurofeedback in persistent postural-perceptual

dizziness. Case report. Front. Hum. Neurosci. 16:959579. doi:

10.3389/fnhum.2022.959579

 

PTSD

Kirk, H.W. & Dahl, M.G. (2022): Infra Low Frequency Neurofeedback Training for

Trauma Recovery: A Case Report. Front. Hum. Neurosci. 16:905823. doi:

10.3389/fnhum.2022.905823

Spreyermann, R. (2022). Case Report : Infra-Low-Frequency Neurofeedback for

PTSD : A Therapist`s Perspective. Front. Hum. Neurosci. 16:893830. doi:

10.3389/fnhum.2022.893830

Winkeler, A., Winkeler, M. & Imgart, H. (2022). Infra-Low Frequency Neurofeedback in

the Treatment of Patients With Chronic Eating Disorder and Comorbid

Post-Traumatic Stress Disorder. Front. Hum. Neurosci. 16:890682, 1–11. doi:

10.3389/fnhum.2022.890682

Gerge, A. (2020). A multifaceted case-vignette integrating neurofeedback and EMDR

in the treatment of complex PTSD. European Journal of Trauma & Dissociation, 4(3),

100157.

Dahl, M. G. (2020). Neurofeedback with PTSD and traumatic brain injury. In H. W. Kirk

(Ed.), Restoring the brain:Neurofeedback as an integrative approach to health (2nd ed.).

New York, NY: Routledge, pp.256-284.

Nilsson, R. M. & Nilsson, V. (2014). Neurofeedback Treatment for Traumatized

Refugees – A Pilot Study. Master thesis, Dept. of Psychology, Lund University.

Kelson, C. Y. (2013). The Impact of EEG Biofeedback on Veterans’ Symptoms of

Posttraumatic Stress Disorder (PTSD)..The Chicago School of Professional

Psychology ProQuest Dissertations & Theses, 2013. 3606174.

Othmer, S., Othmer, S. F. & Legarda, S. B. (2011). Clinical Neurofeedback: Training

Brain Behavior. Treat. Strateg. Pediatr. Neurol. Psychiatry 2, 67–73.

 

Othmer, S. & Othmer, S. F. (2009). Post Traumatic Stress Disorder—The

Neurofeedback Remedy. Biofeedback 37, 24–31.

 

Refractory neurological disorders (Epilepsy, Cerebral Palsy)

Legarda, S. B., McMahon, D., Othmer, S. S. & Othmer, S. S. (2011): Clinical

neurofeedback: Case studies, proposed mechanism, and implications for pediatric

neurology practice. J. Child Neurol. 26, 1045–1051.

Schmidt, C. & Laugesen, H. (2023). Infra-low frequency neurofeedback training in

Dravet syndrome: a case study. Epilepsy Behav. Reports 100606.

doi:10.1016/j.ebr.2023.100606

 

Schizophrenia

Nestoros, J.N. and Vallianatou N.G. (2022). Infra-Low Frequency Neurofeedback

rapidly ameliorates schizophrenia symptoms: A case report of the first session.

Front. Hum. Neurosci. 16:923695. doi: 10.3389/fnhum.2022.923695

 

Tinnitus (Attn: The authors have primarily used frequency band NFB training in

their studies and are (just) referring to ILF-NFB)

Güntensperger, D. (2018). Treatment of chronic tinnitus with neurofeedback.

(Doctoral Dissertation, University of Zurich).

Güntensperger, D., Thüring, C., Meyer, M., Neff, P. Kleinjung, T. (2017). Neurofeedback

for Tinnitus Treatment – Review and Current Concepts. Frontiers in Aging

Neuroscience, 9,386.

Güntensperger, D., Thüring, C., Kleinjung, T., Neff, P. & Meyer, M. Investigating the

efficacy of an individualized alpha/delta neurofeedback protocol in the treatment of

chronic tinnitus. Neural Plast. 2019, (2019).

Güntensperger, D., Kleinjung, T., Neff, P., Thüring, C. & Meyer, M. Combining

neurofeedback with source estimation: Evaluation of an sLORETA neurofeedback

protocol for chronic tinnitus treatment. Restor. Neurol. Neurosci. 38, 283–299 (2020).

 

Tourette/Tic Disorders

Solberg, B. & Solberg, E. (2022). Infra-low frequency neurofeedback in application to

Tourette syndrome and other tic disorders: A clinical case series. Front. Hum.

Neurosci. 16:891924. doi: 10.3389/fnhum.2022.891924

 

Traumatic Brain Injury (TBI)

See “Brain Injury”

 

Virtual Reality NFB in Pain Treatment

Orakpo, N., Yuan, C., Olukitibi, O., Burdette, J. & Arrington, K. (2022). Does Virtual

Reality Feedback at Infra-Low Frequency Improve Centralized Pain With Comorbid

Insomnia While Mitigating Risks for Sedative Use Disorder? A Case Report. Front.

Hum. Neurosci. 16:915376. doi: 10.3389/fnhum.2022.915376.

Orakpo, N., Vieux, U. & Castro-Nunez, C. (2021). Case Report: Virtual Reality

Neurofeedback Therapy as a Novel Modality for Sustained Analgesia in Centralized

Pain Syndromes. Frontiers in Psychiatry, 12, 418. doi: 10.3389/fpsyt.2021.660105

 

ILF Neurofeedback Therapy – Practical experiences & case reports

Wührer, G., Kolbe, S., Bolduan, U., Icking, A., Schneider, H. (2025). Klinisches

ILF-Neurofeedback mit Kindern und Jugendlichen. Training bei psychischen

Störungsbildern – Studienlage, Anwendungsbeispiele und Kostenerstattung. Forum

für Kinder- und Jugendpsychiatrie 1, 42–68. (In German language)

Wührer, G. & Kolbe, S. (2024). Klinisches ILF-Neurofeedback mit Kindern und

Jugendlichen. Gehirnfunktions-Training bei psychischen Störungsbildern – eine

Übersicht mit Anwendungsbeispielen. Forum für Kinder- und Jugendpsychiatrie 4,

62–87. (In German language)

Knežević, B. (2024). Neurofeedback Treatment – Application in Speech and

Language Therapy, Logopedija, 14(1), 23-31. doi: 10.31299/log.14.1.3 (In Croatian

language)

Theis T, Bolduan U, Seuß S, Spallek J, Wandernoth B and Mayer-Pelinski R (2025)

ILF-neurofeedback in clinical practice: examining symptom change and performance

metrics across diagnostic groups. Front. Hum. Neurosci. 19:1601187. doi:

10.3389/fnhum.2025.1601187

 

Reviews

Bazzana, F., Finzi, S., Di Fini, G. & Veglia, F. (2022). Infra-Low Frequency

Neurofeedback: A Systematic Mixed Studies Review. Front. Hum. Neurosci.

16:920659. doi: 10.3389/fnhum.2022.920659

 

Books and book chapters on ILF Neurofeedback (in alphabetical order)

Haus, K.-M. et al. (2015). Praxisbuch Biofeedback und Neurofeedback. Springer Berlin,

Heidelberg. doi:10.1007/978-3-662-59720-0 (In German language)

Kirk, H. W. (2020). Restoring the Brain: Neurofeedback as an Integrative Approach to

Health. Second Edition, Routledge, Taylor and Francis Group.

Othmer S. (2019). Protocol Guide for Neurofeedback Clinicians, 7th Edition. EEG Info.

ISBN: 0989543277.

Othmer, S. & Othmer, S. F. (2011). Performance Enhancement Applications of

Neurofeedback. In Case Studies in Applied Psychophysiology: Neurofeedback and

Biofeedback Treatments for Advances in Human Performance 17–30.

Wiley-Blackwell.

Sidiropoulos, K. (ed.) (2023). EEG-Neurofeedback bei ADS und ADHS. Innovative

Behandlung von Kindern, Jugendlichen und Erwachsenen. Springer-Verlag GmbH

Deutschland. ISBN: 978-3-662-65725-6. doi: 10.1007/978-3-662-65726-3 (In German

language)

Ströhle, G. (2023): Infra-Low Frequency Training. In: Sidiropoulos, K. (ed.) (2023):

EEG-Neurofeedback bei ADS und ADHS. Kapitel 17, 237-271. Springer-Verlag GmbH

Deutschland. doi: 10.1007/978-3-662-65726-3_17(In German language)

Wiedemann, M. & Segler, K. (2017): Neurofeedback – Wie eine spielerisch leichte

Therapie dem Gehirn hilft, Probleme zu überwinden. Kösel, ISBN: 3466346827. (In

German language)

Wiedemann, M. & Segler, K. (2024). Neurofeedback – A gentle therapy to help the

brain help itself. BoD – Books on Demand. ISBN: 9783758375095.