Clinical Neuroscience

[The experience of pain: A review of the new results of pain research]


MAY 30, 2021

Clinical Neuroscience - 2021;74(5-6)


[According to the basic assumption of pain research, the activity of pain matrix shows an increase in functional neuroimaging studies during nociceptive stimulation whose extent is correlated with the intensity of the stimulus and that of the emerged experience of pain. Research conducted over the past decade has questioned this assumption. In order to understand the controversial findings I have reviewed new results of pain research. In order to get to know more about “hardware”, I reviewed the direct relationships between members of the pain network. With a view to understand the mechanism of the development of pain perception, the “software”, I give a brief description of the functioning of the salient as well as attention and executive control network. To have a better understanding of “hardware”, I examined the behavior of the pain network of patients incapable of feeling pain in aversive situations. In the review I introduced the thought-provoking knowledge of the pain for all experts, regardless of this specialty by presenting the results of pain research.]


  1. Debreceni Egyetem, Általános Orvostudományi Kar, Aneszteziológiai és Intenzív Terápiás Tanszék, Debrecen



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Clinical Neuroscience

Comparison of direct costs of percutaneous full-endoscopic interlaminar lumbar discectomy and microdiscectomy: Results from Turkey

ÜNSAL Ünlü Ülkün, ŞENTÜRK Salim

Microdiscectomy (MD) is a stan­dard technique for the surgical treatment of lumbar disc herniation (LDH). Uniportal percutaneous full-endoscopic in­terlaminar lumbar discectomy (PELD) is another surgical op­tion that has become popular owing to reports of shorter hos­pitalization and earlier functional recovery. There are very few articles analyzing the total costs of these two techniques. The purpose of this study was to compare total hospital costs among microdiscectomy (MD) and uniportal percutaneous full-endoscopic interlaminar lumbar discectomy (PELD). Forty patients aged between 22-70 years who underwent PELD or MD with different anesthesia techniques were divided into four groups: (i) PELD-local anesthesia (PELD-Local) (n=10), (ii) PELD-general anesthesia (PELD-General) (n=10), (iii) MD-spinal anesthesia (MD-Spinal) (n=10), (iv) MD-general anesthesia (MD-General) (n=10). Health care costs were defined as the sum of direct costs. Data were then analyzed based on anesthetic modality to produce a direct cost evaluation. Direct costs were compared statistically between MD and PELD groups. The sum of total costs was $1,249.50 in the PELD-Local group, $1,741.50 in the PELD-General group, $2,015.60 in the MD-Spinal group, and $2,348.70 in the MD-General group. The sum of total costs was higher in the MD-Spinal and MD-General groups than in the PELD-Local and PELD-General groups. The costs of surgical operation, surgical equipment, anesthesia (anesthetist’s costs), hospital stay, anesthetic drugs and materials, laboratory wor­kup, nur­sing care, and two main groups (PELD-MD) me­dication diffe­red significantly among the two main groups (PELD-MD) (p<0.01). This study demonstrated that PELD is less costly than MD.

Clinical Neuroscience

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[Despite the continuous development of diagnosis and treatment of patients with Parkinson’s disease and the arrival of new therapeutic options in recent years the treatment and care of people with Parkinson’s disease especially in the advanced stage remains a major challenge for neurologists specialized in movement disorders. The treatment of Parkinson’s disease is adversely affected by several factors: the disease progresses relentlessly, the symptoms and rate of progression, other concomitant non-motor symptoms, and the appearance of complications caused by treatment show great heterogeneity. Based on all these factors it is difficult to develop and apply a uniform routine therapeutic guideline. This summary seeks to shed light on aspects of the treatment of Parkinson’s disease particularly in advanced-stage cases drawing on data from a professional college recommendation and the literature.]

Clinical Neuroscience

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[Transcranial direct current stimulation (tDCS) is a promising brain stimulation tool which is non-invasive, easy to use and relatively cheap. Since it can change brain activity in a temporal manner, it can contribute to both clinical practice and neuroscientific research. However, the effectiveness of tDCS has been questioned considering the lack of full understanding of its mechanism of action and the seemingly contradictory results. In this review, we aim to provide a summary of potential problems and possible solutions. Our main focus is on the inter-individual differences in the effect of tDCS which can explain the noisy data, thus, controlling for them is important in order to show reliable results. This review is hoped to contribute to maximizing the potential of tDCS by helping future researchers to design replicable studies.]

Clinical Neuroscience

A new method to determine the optimal orientation of Slim Modiolar cochlear implant electrode array insertion

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Our goal was to determine the optimal orientation of insertion of the Slim Modiolar electrode and develop an easy-to-use method to aid implantation surgery. In some instances, the electrode arrays cannot be inserted in their full length. This can lead to buckling, interscalar dislocation or tip fold-over. In our opinion, one of the possible reasons of tip fold-over is unfavourable orientation of the electrode array. Our goal was to determine the optimal orientation of the Slim Modiolar electrode array relative to clear surgical landmarks and present our method in one specified case. For the measurement, we used the preoperative CT scan of one of our cochlear implant patients. These images were processed by an open source and free image visualization software: 3D Slicer. In the first step we marked the tip of the incus short process and then created the cochlear view. On this view we drew two straight lines: the first line represented the insertion guide of the cochlear implant and the second line was the orientation marker (winglet). We determined the angle enclosed by winglet and the line between the tip of the incus short process and the cross-section of previously created two lines. For the calculation we used a self-made python code. The result of our algorithm for the angle was 46.6055°. To validate this result, we segmented, from the CT scan, the auditory ossicles and the membranaceous labyrinth. From this segmentation we generated a 3D reconstruction. On the 3D view, we can see the position of the previous lines relative to the anatomical structures. After this we rotated the 3D model together with the lines so that the insertion guide forms a dot. In this view, the angle was measured with ImageJ and the result was 46.599°. We found that our method is easy, fast, and time-efficient. The surgery can be planned individually for each patient, based on their routine preoperative CT scan of the temporal bone, and the implantation procedure can be made safer. In the future we plan to use this method for all cochlear implantation surgeries, where the Slim Modiolar electrode is used.

Clinical Neuroscience

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Clinical Neuroscience

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Clinical Neuroscience

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Clinical Neuroscience

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Clinical Neuroscience

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Clinical Neuroscience

[The connection between the socioeconomic status and stroke in Budapest]


[The well-known gap bet­ween stroke mortality of Eastern and Western Euro­pean countries may reflect the effect of socioeconomic diffe­rences. Such a gap may be present between neighborhoods of different wealth within one city. We set forth to compare age distribution, incidence, case fatality, mortality, and risk factor profile of stroke patients of the poorest (District 8) and wealthiest (District 12) districts of Budapest. We synthesize the results of our former comparative epidemiological investigations focusing on the association of socioeconomic background and features of stroke in two districts of the capital city of Hungary. The “Budapest District 8–12 project” pointed out the younger age of stroke patients of the poorer district, and established that the prevalence of smoking, alcohol-consumption, and untreated hypertension is also higher in District 8. The “Six Years in Two Districts” project involving 4779 patients with a 10-year follow-up revealed higher incidence, case fatality and mortality of stroke in the less wealthy district. The younger patients of the poorer region show higher risk-factor prevalence, die younger and their fatality grows faster during long-term follow-up. The higher prevalence of risk factors and the higher fatality of the younger age groups in the socioeconomically deprived district reflect the higher vulnerability of the population in District 8. The missing link between poverty and stroke outcome seems to be lifestyle risk-factors and lack of adherence to primary preventive efforts. Public health campaigns on stroke prevention should focus on the young generation of socioeconomi­cally deprived neighborhoods. ]