Halit Anil Eray

HALIT ANIL ERAY, MD

Neurosurgeon — Stereotactic and Functional Neurosurgery, Neuromodulation

RESEARCH INTERESTS

Stereotactic and functional neurosurgery; neuromodulation and deep brain stimulation; movement disorders; neuropsychiatric surgery; advanced neuroimaging and connectomics; multidisciplinary DBS workflows and target planning.

EDUCATION

2019–2024 Residency in Neurosurgery (with research assistantship), Department of Neurosurgery, Ankara University Faculty of Medicine, Ankara, Türkiye

2012–2018 Doctor of Medicine (MD), Ankara University Faculty of Medicine, Ankara, Türkiye

2012 Ankara Science High School, Ankara, Türkiye

ACADEMIC AND PROFESSIONAL APPOINTMENTS

2025–2026 Associate Clinical Research Scholar, Department of Neurosurgery, University of Florida, Gainesville, Florida, USA

Clinical and research activities in functional neurosurgery under Prof. Kelly D. Foote, including movement-disorder and Tourette syndrome DBS clinics, operating-room participation, and neuromodulation research.

December 2024–present Neurosurgeon (Consultant), Department of Neurosurgery, Ardahan State Hospital, Ardahan, Türkiye

Consultant-level clinical practice in general and cranial neurosurgery.

2022 Clinical Fellow in Stereotactic and Functional Neurosurgery, Neuromodulation Center, International Medicana Hospital, Istanbul, Türkiye

Deep brain stimulation and spinal cord stimulation procedures under Prof. Atilla Yılmaz, including surgical workflow, target planning, and programming strategies.

2019–2024 Resident in Neurosurgery, Department of Neurosurgery, Ankara University, Ankara, Türkiye

Comprehensive training in functional neurosurgery, neuro-oncology, skull base, trauma, vascular, and spinal surgery.

2015 Observership in Neurosurgery, CHRISTUS Muguerza Hospital, Chihuahua, Mexico

Early clinical and operating-room exposure to neurosurgical practice.

PEER-REVIEWED JOURNAL ARTICLES

Reverse chronological order.

1.    Hasimoglu S, Tekneci O, Eray HA, Orhan O, Ozpiskin OM, Bayatli E, Ozgural O, Dogan I. Temporalis muscle dissection techniques in the pterional approach: quantitative impact on operative corridor and surgical freedom. World Neurosurgery. 2026;212:125061. doi:10.1016/j.wneu.2026.125061. PMID: 42177943.

2.    Eray HA, Terzi M, Erdogan K, Hasimoglu S, Ozpiskin OM, Buyuktepe M, Bayatli E, Ozgural O, Dogan I. A morphometric analysis of axis vertebra for microsurgical posterior midline transaxis odontoidectomy surgery. Bratislava Medical Journal. 2026;127(8):3696–3704. doi:10.1007/s44411-026-00736-6.

3.    Eray HA, Ozpiskin OM, Hasimoglu S, Orhan O, Akur AR, Heper AO, Bayatli E, Dogan I. Intracranial extension of the rare and highly aggressive sinonasal teratocarcinoma: a case report and literature review. SN Comprehensive Clinical Medicine. 2026;8:163. doi:10.1007/s42399-026-02383-y.

4.    Orhan O, Eray HA, Zaimoglu M, Aras N, Ersoz CC, Meco C, Beton S, Unlu MA, Kahilogullari G. From proliferation to bone invasion: the association between Ki-67 index and histological sellar floor destruction in pituitary adenomas. Endocrine. 2026;91(1):20. doi:10.1007/s12020-025-04489-0. PMID: 41461988.

5.    Ozgural O, Bayatli E, Eray HA, Ozpiskin OM, Beton S, Kahilogullari G, Unlu MA. Surgical management of symptomatic recurrent/progressive craniopharyngioma: is there a gold-standard approach? World Neurosurgery. 2025;194:123405. doi:10.1016/j.wneu.2024.10.134. PMID: 39522815.

6.    Zaimoglu M, Orhan O, Alpergin BC, Mete EB, Hasimoglu S, Eray HA, Tagni AW, Peker E, Ugur HC, Hursoy N, Budak B, Eroglu U. Intracranial arachnoid cysts in adulthood: a retrospective, multicenter magnetic resonance imaging-based study. Turkish Neurosurgery. 2024;34(6):1073–1080. doi:10.5137/1019-5149.JTN.44188-23.3. PMID: 39474954.

7.    Ozgural O, Bayatli E, Eray HA, Ozpiskin OM, Unal S, Peker E, Bozkurt M, Kahilogullari G. The utility of neuroendoscopic approach for pineal region lesions: single-centre experience. Turkish Neurosurgery. 2024;34(6):1093–1101. doi:10.5137/1019-5149.JTN.44904-23.4. PMID: 39474950.

8.    Yilmaz A, Eray HA, Cakir M, Ceylan M, Blomstedt P. Deep brain stimulation with double targeting of the VIM and PSA for the treatment of rare tremor syndromes. Stereotactic and Functional Neurosurgery. 2024;102(4):224–239. doi:10.1159/000539162. PMID: 38934181.

9.    Orhan O, Eray HA, Alpergin BC, Zaimoglu M, Ozpiskin OM, Aras N, Heper A, Eroglu U. Polymorphous low-grade neuroepithelial tumor of the young (PLNTY): a case report with surgical and neuropathological differential diagnosis. Clinical Neuropathology. 2024;43(3):83–91. doi:10.5414/NP301609. PMID: 38726568.

10.   Dogan I, Eray HA, Ozgural O, Tekneci O, Hasimoglu S, Terzi M, Mete EB, Kuzukiran YC, Elmas H, Orhan O, Abbasoglu B, Bayatli E, Zaimoglu M, Caglar S. Navigating the calvaria with mobile mixed reality-based neurosurgical planning: how feasible are smartphone applications as a craniotomy guide? Neurosurgical Focus. 2024;56(1):E4. doi:10.3171/2023.10.FOCUS23633. PMID: 38163350.

11.   Beger O, Alpergin BC, Zaimoglu M, Orhan O, Kılınç MC, Unal S, Eray HA, Eroglu U. Massa intermedia in adults: incidence, dimension, location and clinical importance. Surgical and Radiologic Anatomy. 2024;46(2):137–152. doi:10.1007/s00276-023-03274-w. PMID: 38191743.

12.   Güner YE, Eray HA, Akbostancı MC, Savaş A. Direct targeting of globus pallidus internus for deep brain stimulation using susceptibility-weighted magnetic resonance imaging. Chirurgia (Turin). 2024;37(4):247–256. doi:10.23736/S0394-9508.24.05696-1.

13.   Mete EB, Eray HA, Orhan O, Zaimoglu M, Ersoz CC, Dogan I. Transcallosal and endoscopic hybrid approach to a rare entity of pediatric intraventricular tumors — cribriform neuroepithelial tumor: a case report and literature review. Child's Nervous System. 2023;39(5):1123–1129. doi:10.1007/s00381-023-05897-1. PMID: 36884098.

14.   Doğan İ, Bayatli E, Eray HA, Erdogan K, Terzi M, Hasimoglu S, Tekneci O, Beton S, Eroglu U, Ozgural O, Kahilogullari G, Caglar YS. Single-institution comparative analysis for odontoid resection: posterior transaxis versus anterior transnasal approach. Neurosurgical Focus. 2023;54(3):E12. doi:10.3171/2022.12.FOCUS22624. PMID: 36857785.

15.   Erdoğan K, Eray HA, Doğan İ. An intracranial foreign body that encountered incidentally after years. Journal of Ankara University Faculty of Medicine. 2022;75(1):139–141. doi:10.4274/atfm.galenos.2021.65668.

PUBLISHED CONFERENCE ABSTRACTS

Indexed abstracts, listed separately from peer-reviewed full-length articles; reverse chronological order.

1.    Yılmaz A, Eray HA. EV0094 GPi and STN dual targeting while avoiding pallidal vascular malformation in a PD patient with levodopa-induced dyskinesia. Neuromodulation. 2026;29(1):S81. doi:10.1016/j.neurom.2025.09.094.

2.    Simsek I, Eray HA, Yilmaz A. Axial angulations of DBS targets and offering a new design for Ben's gun. NeuroTarget. 2025;19(2):50. doi:10.47924/neurotarget2025525.

3.    Simsek I, Eray HA, Yildiz H, Kuyuk H, Yilmaz A. The effect of linear incision technique on infection and cosmetic results in deep brain stimulation. NeuroTarget. 2025;19(2):51. doi:10.47924/neurotarget2025526.

4.    Simsek I, Eray HA, Yilmaz A. Retrocollis as cervical dystonia in Parkinson's disease and effect of DBS: case series. NeuroTarget. 2025;19(2):52. doi:10.47924/neurotarget2025527.

5.    Yilmaz A, Eray HA. P077 Adjusting the Ben-gun array increments according to radio-morphology of internal globus pallidus. Neuromodulation. 2025;28(1):S207–S208. doi:10.1016/j.neurom.2024.09.314.

6.    Yilmaz A, Eray HA, Blomstedt P. P078 The efficacy of bilateral DBS with double targeting VIM and PSA for treatment of isolated head tremor. Neuromodulation. 2025;28(1):S208. doi:10.1016/j.neurom.2024.09.315.

7.    Zaimoglu M, Hasimoglu S, Alpergin BC, Eray HA, Eroglu U, Ozgural O, Bozkurt M, Kahilogullari G, Unlu A. Management of pediatric sylvian arachnoid cysts: a single center experience. Brain and Spine. 2024;4(Suppl 3):103426. doi:10.1016/j.bas.2024.103426.

8.    Bayatli E, Eray HA, Ozgunduz A, Cil MS, Babur M, Abbasoglu B, Dogan I. Revisiting neurosurgical practice under earthquake-like natural disasters. Brain and Spine. 2023;3(Suppl 1):101957. doi:10.1016/j.bas.2023.101957.

9.    Erdoğan K, Eray HA, Abbasoğlu B, Tekneci O, Haşimoğlu S, Solmaz S, Çağlar YŞ, Doğan İ. Craniovertebral realignment for basilar invagination via posterior midline approach: a novel surgical method to treat basilar invagination. Brain and Spine. 2022;2:101248. doi:10.1016/j.bas.2022.101248.

10.   Erdoğan K, Eray HA, Abbasoğlu B, Haşimoğlu S, Tekneci O, Solmaz S, Çağlar YŞ, Doğan İ. Surgical treatment of ACOM aneurysm via anterior interhemispheric approach. Brain and Spine. 2022;2:101410. doi:10.1016/j.bas.2022.101410.

11.   Erdoğan K, Eray HA, Abbasoğlu B, Tekneci O, Haşimoğlu S, Solmaz S, Çağlar YŞ, Doğan İ. Urgent microneurosurgical treatment of ruptured AVMs without embolization. Brain and Spine. 2022;2:101416. doi:10.1016/j.bas.2022.101416.

12.   Erdoğan K, Eray HA, Abbasoğlu B, Haşimoğlu S, Tekneci O, Solmaz S, Çağlar YŞ, Doğan İ. Six pediatric cases with thoracic vertebral pathological subsidence: gross total tumor removal, corpectomy and 360-degree stabilization via posterolateral approach. Brain and Spine. 2022;2:101466. doi:10.1016/j.bas.2022.101466.

13.   Yılmaz A, Eray HA. Deep brain stimulation — past, present, future. Anatomy. 2022;16(Suppl 3):S203. doi:10.2399/ana.22.003s.

CONFERENCE PRESENTATIONS

Reverse chronological order; presenting author role indicated for each item.

2026

39th Scientific Congress of the Turkish Neurosurgical Society, Antalya, Türkiye, 9–12 April 2026

• Dual-target VIM–PSA DBS for head tremor: clinical response and connectome-based evaluation. Oral presentation; presenter.
• Approach to nonfunctioning pituitary adenomas. Morning seminar; invited speaker.

2025

5th Interim Meeting of the World Society for Stereotactic and Functional Neurosurgery (WSSFN), Buenos Aires, Argentina

• The effect of linear incision technique on infection and cosmetic results in deep brain stimulation. Poster presentation; contributing author.
• Axial angulations of DBS targets and offering a new design for Ben's gun. Poster presentation; contributing author.
• Retrocollis as cervical dystonia in Parkinson's disease and the effect of DBS: case series. Poster presentation; contributing author.

4th Joint Congress of the INS European Chapters (e-INS 2025), Istanbul, Türkiye, 22–24 May 2025

• GPi and STN dual targeting while avoiding pallidal vascular malformation in a PD patient with levodopa-induced dyskinesia. Poster presentation; second author.

2024

20th Meeting of the World Society for Stereotactic and Functional Neurosurgery (WSSFN), Chicago, Illinois, USA, 3–6 September 2024

• Contralateral dual targeting GPi and STN for levodopa-induced dyskinesia in a PD patient with pallidal vascular malformation. Poster presentation; presenter.
• Adjusting the Ben-gun array increments according to radio-morphology of internal globus pallidus. Poster presentation; presenter.
• The efficacy of bilateral DBS with double targeting VIM and PSA for treatment of rare tremor syndromes. Oral presentation; second author.

EANS 2024 Congress, Sofia, Bulgaria, 13–17 October 2024

• Endoscopy-assisted posterior transaxis odontoidectomy: an extended perspective for a novel approach. Oral presentation; third author.

2023

ESSFN 2023 Congress, Stockholm, Sweden

• Susceptibility-weighted imaging for direct targeting of globus pallidus internus in deep brain stimulation. Oral presentation; second author.

4th Interim Meeting of the World Society for Stereotactic and Functional Neurosurgery (WSSFN), Dubai, United Arab Emirates

• The efficacy of bilateral DBS with double targeting VIM and PSA for treatment of isolated head tremor. Oral presentation; contributing author.
• Adjusting the Ben-gun array increments according to radio-morphology of internal globus pallidus. Oral presentation; contributing author.

EANS 2023 Congress, Barcelona, Spain

• Disrupted anatomy of craniocervical anomalies and surgical nuances of the transaxis approach: pearls and pitfalls for safe odontoidectomy. E-poster presentation; contributing author.
• Comparing the odontoid resection techniques pursuant to surgical approach: anterior versus transaxis. Oral presentation; third author.
• Revisiting neurosurgical practice under earthquake-like natural disasters. Oral presentation; contributing author.

2022

EANS 2022 Congress, Belgrade, Serbia

• Urgent microneurosurgical treatment of ruptured AVMs without embolization. E-poster; presenter.
• Management of wrist drop. E-poster; presenter.
• Translimeninsular approach for resection of a ventricular metastatic lesion. E-poster; presenter.
• Surgical treatment of ACOM aneurysm via anterior interhemispheric approach. E-poster; presenter.

ADDITIONAL TRAINING AND COURSES

2–4 April 2025 Stereotactic and Functional Neurosurgery Course for Neurosurgeons and Neurologists, Oregon Health & Science University, Portland, Oregon, USA. Intensive didactic and hands-on training in surgery for pain, epilepsy, and movement disorders. Course participant.

LANGUAGES

Turkish — native

English — fluent