Journals / Türk Psikiyatri Dergisi / 2016 / Cilt: 27 - Sayı: 3

Investigating Connectivity of Orbitomedial Prefrontal Region in a Patient with Traumatic Brain Injury

Bir Travmatik Beyin Hasarı Olgusunda Orbitomedial Prefrontal Bölge Bağlantılarının İncelenmesi

Pages
218–223
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In this case report, we emphasized that symptoms were not limited with dysfunction of the traumatized region and the regular functions of other brain regions were also affected via the disturbance of connection pathways

📌 3 Key Takeaways

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Objective & Hypothesis:Investigating Connectivity of Orbitomedial Prefrontal Region in a Patient with Traumatic Brain InjuryThe majority of the research studying the prefrontal region has focused on gray matter injury.
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Key Findings & Data:MRI revealed cystic encephalomalasia with a diameter of 3.4 cm in the left orbitomedial frontal region.
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Conclusion & Impact:In this case report, we emphasized that symptoms were not limited with dysfunction of the traumatized region and the regular functions of other brain regions were also affected via the disturbance of connection pathways
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Investigating Connectivity of Orbitomedial Prefrontal Region in a Patient with Traumatic Brain InjuryThe majority of the research studying the prefrontal region has focused on gray matter injury. However, recent studies show that damage to white matter also contributes to the development of cognitive impairment after traumatic brain injury (TBI). Through the use of diffusion tensor imaging (DTI), it is now possible to assess the white matter fiber pathways between brain regions. With Diffusion Tensor Tractography (DTT), fibers of interest can be three dimensionally reconstructed and associated measurements can be performed. In this paper, we present the case of an individual that suffered from panic attacks, behavioral changes, auditory hallucinations and disturbing bodily sensations after traumatic brain injury. The patient was evaluated with a detailed clinical and neuropsychological assessment, magnetic resonance imaging (MRI) and DTI. MRI revealed cystic encephalomalasia with a diameter of 3.4 cm in the left orbitomedial frontal region. With DTT, major white matter tracts of the traumatized area were compared with symmetrical tracts in the contralateral side. Streamline count for the right inferior fronto-occipital fasciculus (iFOF) was 54 while no streamlines could be found for the left iFOF. For the left uncinate fasciculus and the left cingulum, streamline counts were significantly lower compared with the right side (62% and 34% lower; respectively). White matter damage in TBI can cause dysfunction of different brain regions through disruption of connections with the traumatized area. In this case report, we emphasized that symptoms were not limited with dysfunction of the traumatized region and the regular functions of other brain regions were also affected via the disturbance of connection pathways

Özet

Prefrontal bölgeyle ilgili çalışmalar son yıllara kadar büyük oranda gri madde hasarına odaklanmıştır. Güncel çalışmalar ise kortikal hasarın yanı sıra iki beyin bölgesi arasındaki bağlantılarda bozulmanın da bilişsel bozukluklara katkıda bulunduğunu göstermektedir. Günümüzde Difüzyon Tensör Görüntüleme (DTG) yardımıyla beyaz madde lifleri değerlendirilebilmekte, devreler üç boyutlu olarak yapılandırılarak ilgili ölçümler yapılabilmektedir. Bu yazıda, travmatik beyin hasarından sonra ciddi davranış değişiklikleri, panik atakları, paresteziler ve işitme varsanılarının ortaya çıktığı bir olgu sunulmuştur. Olgu detaylı kliniknöropsikolojik incelemenin yanı sıra manyetik rezonans görüntüleme ve DTG ile değerlendirilmiştir. Sol orbitofrontal bölgede yaklaşık 3,4 cm çapında ensefalomalazik alan saptanmış, Difüzyon Tensor Traktografi ile lezyon tarafındaki major beyaz madde devreleri karşı taraftaki simetrik devrelerle karşılaştırılmıştır. Lezyon tarafındaki inferior frontooksipital fasiküle ait hiç akım hattı (streamline) saptanamamış, unsinat fasikül ve singulum devrelerinin akım hattı sayılarıysa karşı tarafa göre sırasıyla %62 ve %34 oranında daha düşük bulunmuştur. Travmatik beyin hasarında beyaz madde devrelerinin zarar görmesi, travma bölgesiyle bağlantısı bozulan farklı bölgelerde işlev bozukluklarına yol açabilmektedir. Olgumuzda da travma sonrasında ortaya çıkan belirtiler, hasarın meydana geldiği bölgenin işlev bozukluklarıyla sınırlı kalmamıştır. Bu olgu sunumunda; hasarlı bölgeyle bağlantılı devrelerin zarar gördüğü ileri tanı yöntemleriyle gösterilmiş, doğrudan hasara uğramayan kortikal bölgelerle ilgili klinik bulguların da ortaya çıktığı vurgulanmıştır

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Cite This Article

HEPDURGUN, C., ÖZALAY, Ö., EROĞLU, S., NAZLI, I. P., KİTİŞ, Ö., GÖNÜL, A. S. (2016). Investigating Connectivity of Orbitomedial Prefrontal Region in a Patient with Traumatic Brain Injury. Türk Psikiyatri Dergisi, Cilt: 27 - Sayı: 3, 218–223. https://ajindex.com/articles/88254

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References (15)

  1. Allman JM, Hakeem A, Erwin JM ve ark. (2001) The anterior cingulate cortex. The evolution of an interface between emotion and cognition. Ann N Y Acad Sci 935:107-17.
  2. Amad A, Cachia A, Gorwood P ve ark. (2014) The multimodal connectivity of the hippocampal complex in auditory and visual hallucinations. Mol Psychiatry 19:184-91.
  3. Catani M, Forkel SJ, Dell'Acqua F ve ark. (2012)The anatomy of fronto-occipital connections from early blunt dissections to contemporary tractography. Cortex 56:73-84.
  4. Catani M, Mesulam M (2008) What is a disconnection syndrome? Cortex 44:911-3.
  5. Catani M, Thiebaut de Schotten M (2008) A diffusion tensor imaging tractography atlas for virtual in vivo dissections. Cortex 44:1105-32.
  6. Cato MA, Delis DC, Abildskov TJ ve ark. (2004) Assessing the elusive cognitive deficits associated with ventromedial prefrontal damage: a case of a modern- day Phineas Gage. J Int Neuropsychol Soc 10:453-65.
  7. Curcic-Blake B, Nanetti L, van der Meer L ve ark. (2015) Not on speaking terms: hallucinations and structural network disconnectivity in schizophrenia. Brain Struct Funct 220:407-18.
  8. Doricchi F, Thiebaut de Schotten M, Tomaiuolo F ve ark. (2008) White matter (dis)connections and gray matter (dys)functions in visual neglect: gaining insights into the brain networks of spatial awareness. Cortex 44:983-95.
  9. Duffau H, Gatignol P, Mandonnet E ve ark. (2005) New insights into the anatomo-functional connectivity of the semantic system: a study using cortico-subcortical electrostimulations. Brain 128:797-810.
  10. Hubl D, Koenig T, Strik W ve ark. (2004) Pathways that make voices: white matter changes in auditory hallucinations. Arch Gen Psychiatry 61:658-68.
  11. Johnson VE, Stewart W, Smith DH (2013) Axonal pathology in traumatic brain injury. Exp Neurol 246:35-43.
  12. Kitis O, Ozalay O, Zengin EB ve ark. (2012) Reduced left uncinate fasciculus fractional anisotropy in deficit schizophrenia but not in non-deficit schizophrenia. Psychiatry Clin Neurosci 66:34-43.
  13. Koch K, Wagner G, Dahnke R ve ark. (2010) Disrupted white matter integrity of corticopontine-cerebellar circuitry in schizophrenia. Eur Arch Psychiatry Clin Neurosci 260:419-26.
  14. Levens SM, Larsen JT, Bruss J ve ark. (2014) Neuropsychologia What might have been ? The role of the ventromedial prefrontal cortex and lateral orbitofrontal cortex in counterfactual emotions and choice. Neuropsychologia 54:77-86.
  15. Liu X, Lai Y, Wang X ve ark. (2014) A combined DTI and structural MRI study in medicated-naïve chronic schizophr