Erdoğan E., Baysefer A., Şirin S., Seber N.: The Effect of Cranioplasty on Cerebral Hemodynamics : Evaluation with Transcranial Doppler Sonography (Oral Presentation). European Association of Neurosurgical Societies. Winter Meeting February13-16, 51, Warsaw, 1999

Erdoğan E., Baysefer A., Şirin S., Seber N.: Intracranial Pressure Monitoring in patients with Severe Head Injury: Retrospective Clinical Study (Oral Presentation). European Association of Neurosurgical Societies. Winter Meeting February 13-16, 50, Warsaw, 1999

Erdoğan E, Gonul E, Timurkaynak E. Gunshot wound to the head (oral presentation) 12Th World Congress of the Neurosurgery, F614, 195, Sydney Ausralia 2001

Kahraman S, Sirin S, Erdogan E, Atabey C, Daneyemez M, Gonul E. Is dysphonia permanent or temporary after anterior cervical approach?  FP37.2 13th Congress of the European Association of Neurosurgical Societies (EANS), Glasgow, UK, September 2-7, 2007.

Gokcil Z, Akin R, Bulakbasi N, Acar F, Erdogan E.Vagal nerve stimulation in drug resistant epilepsy: Experience with 7 cases, EPILEPSIA   47   204-205   Suppl. 3    2006

Gokcil Z, Erdogan E, Akin R, Unay, B, Bulakbasi N, Okan S.Epilepsy surgery in children and adolescents: Gulhane military medical school epilepsy surgery group's experience EPILEPSIA   48   124-125   Suppl. 7  2007.

Baysefer A., Şirin S., Daneyemez M., Erdoğan E., Gönül E., Seber N., “Lhermitte-Duclos Disease: A Provisional Diagnosis with MR Imaging (case report)” European Association of Neurosurgical Societies. Winter Meeting February 13-16, 37, Warsaw, 1999

Erdogan E, Duz B, Karacalioglu O, Izci Y, Timurkaynak E, “Influence Of Craniectomy On CSF Circulation: An Experimental Study In Rabbits” 12 th European Congress of Neurosurgery September 7-12 P-NTR-133 Lisboa Portugal 2003

Erdogan E., Duz B., KAracalioğlu., Timurkaynak E. Relationship between cranial defect and physiology of cerebrospinal fluid an experimental study in rabbits 1st Annual Neurological Surgery Conference on Internet Abstract No:4 5 January 2005

Gönül E., Erdogan E., Akay KM., Düz B., Bedük A., Timurkaynak E. Penetrating orbitocranial traumas 7th Congress of Balkan Military Medical Committee P344 6-10 October 2002 Athens, Greece

Tehli O., Solmaz İ., Kahraman S., Erdogan E., Onguru O., Bulakbaşı N. MRI(Magnetic Resonance Imaging) Mismatch Pathoiogy in Brain Lesions P72 September 30- October 03, 2004 Antalya-Turkey 2nd International Symposium on Microneurosurgical Anatomy

İzci Y., Erdogan E., Gönül E.,  Timurkaynak E. The morphological aspects of lumbar plexus and roots. P324 1st International Levantine Forum “Advences in Neurological Surgery” Bari Italy 7-9 November,2004

İzci Y., Erdogan E., Gönül E.,  Timurkaynak E. Ventricular injury following cranial gunshot wounds. P323 1st International Levantine Forum “Advences in Neurological Surgery” Bari Italy 7-9 November,2004 (Poster Award)

Kahraman S, Sirin S, Tehli O, Erdogan E. Hypoplasia of the atlas as a rare cause of high cervical myelopathy. P18.12 13th Congress of the European Association of Neurosurgical Societies (EANS), Glasgow, UK, September 2-7, 2007

Kahraman S., Timurkaynak E., Ozdogan S., Dincer D., Guclu B., Hatipoglu G., Erdogan E., Sabuncuoglu H. Intradural cement leakage: A rare complication of percutaneous vertebroplasty, cace report and rewiev of the literature P02.04 13th Congress of the European Association of Neurosurgical Societies (EANS), Glasgow, UK, September 2-7, 2007

Erdoğan, E., Y. İzci, E. Gönül ve E. Timurkaynak, “Ventricular injury following cranial gunshot wounds”, Proc. 11th Congress of Balkan Military Medical Committee, Atina, 205, 2006

Göçmen S., Gamsizkan M., Onguru O., Sefalı M., Erdogan E. “Primary Dural Lymphoma Mimicking a Subdural Hematoma: Case Report. P19 Second International Levantine Forum 13-16 November 2008 Antalya Turkey

Erdinç Civelek, Mehmet Bülent Önal, İlker Solmaz, Cahit Kural, Hakan Yakupoğlu, Ersin Erdoğan (Abstract no: 112)OP-46  “A new method of patient’s head positioning in suboccipital retrosigmoid approach” 6th Black Sea Neurosurgical Congress Harbiye Cultural Center İstanbul October 16-18 2009 Turkey

Unay B, Erdoğan E, Vurucu S, Gökçil Z, Bulakbaşı N, Akın R. Effects of vagus nevre stimulation on EEG and seizure frequency in children with intractable epilepsy. 29th International Congress of Clinical Neurophysiology, 28 October -1 November 2010 Kobe, Japan. Clinical

Turkish Neurosurgical Society International Basic Neurosurgery Course Term I, Course I 14-17 March 2012 Antalya, Turkey. Session 3: `Gunshot and penetrating cranial traumas: Description, etiology, management, outcome`

Turkish Neurosurgical 2012 Society International Basic Neurosurgery Course Term I, Course I 14-17 March Antalya, Turkey. Session 10: `Vagal nerve stimulation (VNS)`

The 8th Annual International Neurosurgery Conference 26-31 December 2012 Member of the Scientific Advisory Board