scholarly journals Coherence: a unifying mechanism of deep brain stimulation

2019 ◽  
Vol 121 (1) ◽  
pp. 1-3 ◽  
Author(s):  
Bassam Al-Fatly
Keyword(s):  
Deep Brain Stimulation ◽  
Mechanism Of Action ◽  
Brain Stimulation ◽  
Neurological Diseases ◽  
New Evidence ◽  
Deep Brain

Deep brain stimulation is a powerful neurostimulation technique that proved its efficacy in treating a group of neurological diseases. Several scientific works tried to understand the mechanism of action of deep brain stimulation. Wang et al. ( J Neurosci 38: 4556–4568, 2018) demonstrated new evidence on the role of interregional neuro-oscillatory coherence as a promising model to explain mechanism the of deep brain stimulation.

Deep brain stimulation in headache

Cephalalgia ◽  
2016 ◽  
Vol 36 (12) ◽  
pp. 1143-1148 ◽  
Author(s):  
Massimo Leone ◽  
Alberto Proietti Cecchini
Keyword(s):  
Deep Brain Stimulation ◽  
Brain Stimulation ◽  
Chronic Cluster Headache ◽  
Hypothalamic Stimulation ◽  
Hypothalamic Area ◽  
Unilateral Headache ◽  
Randomised Controlled ◽  
Invasive Neurostimulation ◽  
Deep Brain

Background: Deep brain stimulation of the posterior hypothalamic area was first introduced in 2000 to treat drug-refractory chronic cluster headache (CH). Findings: So far, hypothalamic stimulation has been employed in 79 patients suffering from various forms of intractable short-lasting unilateral headache forms, mainly trigeminal autonomic cephalalgias. The majority were (88.6%) chronic CH, including one patient who suffered from symptomatic chronic CH-like attacks; the remaining were short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing (SUNCT), one had paroxysmal hemicranias and one symptomatic trigeminal neuralgia. Overall, after a mean follow up of 2.2 years, 69.6% (55) hypothalamic-stimulated patients showed a ≥50% improvement. Conclusions: These observations need confirmation in randomised, controlled trials. A key role of the posterior hypothalamic area in the pathophysiology of unilateral short-lasting headaches, possibly by regulating the duration rather than triggering the attacks, can be hypothesised. Because of its invasiveness, hypothalamic stimulation can be proposed only after other, less-invasive, neurostimulation procedures have been tried.

scholarly journals The medial forebrain bundle as a target for deep brain stimulation for obsessive-compulsive disorder

CNS Spectrums ◽  
2016 ◽  
Vol 22 (3) ◽  
pp. 282-289 ◽  
Author(s):  
Volker A. Coenen ◽  
Thomas E. Schlaepfer ◽  
Peter Goll ◽  
Peter C. Reinacher ◽  
Ulrich Voderholzer ◽  
...  
Keyword(s):  
Deep Brain Stimulation ◽  
Major Depression ◽  
Brain Stimulation ◽  
Medial Forebrain Bundle ◽  
Reward System ◽  
Obsessive Compulsive ◽  
Compulsive Disorder ◽  
Deep Brain

Deep brain stimulation (DBS) is a promising putative modality for the treatment of refractory psychiatric disorders such as major depression and obsessive-compulsive disorder (OCD). Several targets have been posited; however, a clear consensus on differential efficacy and possible modes of action remain unclear. DBS to the supero-lateral branch of the medial forebrain bundle (slMFB) has recently been introduced for major depression (MD). Due to our experience with slMFB stimulation for MD, and because OCD might be related to similar dysfunctions of the reward system, treatment with slMFB DBS seams meaningful. Here we describe our first 2 cases together with a hypothetical mode of action.We describe diffusion tensor imaging (DTI) fiber tractographically (FT)-assisted implantation of the bilateral DBS systems in 2 male patients. In a selected literature overview, we discuss the possible mode of action. Both patients were successfully implanted and stimulated. The follow-up time was 12 months. One patient showed a significant response (Yale–Brown Obsessive-Compulsive Scale [YBOCS] reduction by 35%); the other patient reached remission criteria 3 months after surgery (YBOCS<14) and showed mild OCD just above the remission criterion at 12 months follow-up.While the hypermetabolism theory for OCD involves the cortico–striato–thalamo–cortical (CSTC) network, we think that there is clinical evidence that the reward system plays a crucial role. Our findings suggest an important role of this network in mechanisms of disease development and recovery. In this uncontrolled case series, continuous bilateral DBS to the slMFB led to clinically significant improvements of ratings of OCD severity. Ongoing research focuses on the role of the reward system in OCD, and its yet-underestimated role in this underlying neurobiology of the disease.

Symptomatic Cystic Lesion Following Deep Brain Stimulation Surgery

2020 ◽  
pp. 37-40
Author(s):  
Vibhash D. Sharma ◽  
Shilpa Chitnis
Keyword(s):  
Deep Brain Stimulation ◽  
Brain Stimulation ◽  
Rare Complication ◽  
Cyst Formation ◽  
Management Options ◽  
Unexplained Symptoms ◽  
The Common ◽  
Deep Brain Stimulation Surgery ◽  
Deep Brain

Deep brain stimulation therapy is an effective therapy for selected patients with movement disorders. The procedure is relatively safe, but complications related to the surgical procedure or implanted hardware can occur. The common complications include hemorrhage, infarct, infection, and confusion. Noninfectious cyst formation around the DBS lead is a rare but potential complication of this procedure, which can occur several weeks to months after DBS lead implantation. This chapter describes a case of noninfectious cyst formation at the tip of DBS lead in a patient with essential tremor. Clinical presentation, role of imaging, and the management options for this rare complication are discussed. This case also illustrates the importance of post-DBS imaging in suspected cases with new or unexplained symptoms.

Sign in / Sign up

Export Citation Format

Share Document