نتایج جستجو برای: داده ی fmri

تعداد نتایج: 311219  

Alireza Montazer abadi, Arman boroun Hamid Gholamhosseinian, Hossein Akbari_Lalimi Jamshid Jamali Kazem Anvari Shahrokh Naseri Sirus Nekooei

Introduction: This study was aimed to investigate the beneficial effects of functional magnetic resonance imaging (fMRI) data in treatment planning for patients with CNS tumors in order to decrease the injury of functional regions of the brain followed by increase in life quality and survival of patients. This study pursues a novel approach in planning for the treatment of brai...

Journal: :iranian journal of radiation research 0
a. mirzajani medical physics group, tehran university of medical sciences, tehran, iran n. riyahi-alam medical physics group, tehran university of medical sciences, tehran, iran m.a. oghabian medical physics group, tehran university of medical sciences, tehran, iran k. firuznia radiology group, tehran university of medical sciences, tehran, iran h. saberi neurosurgery group, tehran university of medical sciences, tehran

abstract  background: the brain response to temporal frequencies (tf) has been already reported, but with no study reported for different tf with respect to various spatial frequencies (sf).  materials and methods: fmri was performed by 1.5t ge-system in 14 volunteers during checkerboard, with tfs of 4, 6, 8 and 10hz in low and high sfs of 0.5 and 8cpd.  results: average percentage bold signal ...

Hosna Nouri Tahneh Karim Khoshgard, Meysam Siyah Mansoory

Introduction: Neuromyelitis Optica (NMO) is a rare inflammatory disease of the central nervous system which generally affecting the spinal cord and optic nerve. Damage to the optic nerve can result in the patient's dim vision or even blindness, while the spinal cord damage may lead to sensory and motor paralysis and the weakness of the lower limbs in the patient. Magnetic Reson...

Journal: :basic and clinical neuroscience 0
peyman hassani-abharian tehran university of medical sciences, imam khomeini hospital, keshavarz blv, tehran, iran habib ganjgahi tehran university of medical sciences, imam khomeini hospital, keshavarz blv, tehran, iran hosein tabatabaei-jafari tehran university of medical sciences, imam khomeini hospital, keshavarz blv, tehran, iran mohammad ali oghabian tehran university of medical sciences, imam khomeini hospital, keshavarz blv, tehran, iran azarakhsh mokri tehran university of medical sciences, imam khomeini hospital, keshavarz blv, tehran, iran hamed ekhtiari neuroimaging and analysis group (niag), research center for molecular and cellular imaging, tehran university of medical sciences, imam khomeini hospital, keshavarz blv, tehran, iran.

introduction: drug craving could be described as a motivational state which drives drug dependents towards drug seeking and use. different types of self-reports such as craving feeling, desire and intention, wanting and need, imagery of use, and negative affect have been attributed to this motivational state. by using subjective self-reports for different correlates of drug craving along with f...

Ahmad Shalbaf, Arash Maghsoudi, Hasan Mohammadi Kiani,

Background: Early diagnosis of patients in the early stages of Alzheimer's, known as mild cognitive impairment, is of great importance in the treatment of this disease. If a patient can be diagnosed at this stage, it is possible to treat or delay Alzheimer's disease. Resting-state functional magnetic resonance imaging (fMRI) is very common in the process of diagnosing Alzheimer's disease. In th...

Journal: :NeuroImage: Clinical 2021

• The HC and aMCI subjects showed similar retrieval success patterns in fMRI analysis. diminished ERP old/new effects within the pattern. Disturbed correlate of recollection component was related to EM function. disturbed cognitive processes despite preserved Episodic memory (EM) deficit is core dysfunction amnestic mild impairment (aMCI). However, episodic pattern detected by functional MRI (f...

Journal: : 2023

فراداستان تاریخ نگارانه یکی از نمودهای سبک نگارش پسامدرنی و عالی‌ترین نمونه‌هایی است که بدون ادعایی مبنی بر ارائه تصویری واقعیت، نظر خواننده را به ساختگی بودن خود جلب کرده بدین ترتیب صحت وقایع تاریخی چالش می‌کشد گونه‌ای متفاوت آنچه روی داده، نمایش می‌دهد. این پژوهش رمان خانه ارواح اثر ایزابل آلنده اساس نظریات لیندا هاچن در رابطه با مورد بررسی قرار داده است. نتایج نشان می‌دهد استفاده روش‌هایی چو...

Journal: :iranian journal of radiology 0
soheila refahi hakimeh saadati

near-infrared spectroscopy (nirs) is a spectroscopic method that uses the near-infrared region of the electromagnetic spectrum. typical applications include medical and physiological diagnostics. nirs can be used for non-invasive assessment of brain function through the intact skull in human subjects by detecting changes in blood hemoglobin concentrations associated with neural activity, e.g., ...

Journal: :Brain and behavior 2021

Introduction More than one-thousand trials with functional magnetic resonance imaging (fMRI) as an outcome measure were registered in clinicaltrials.gov at the time of writing this article. However, 93% these are still not completed published results and there is no picture available about methodological dimensions ongoing fMRI measure. Methods We collected that use ClinicalTrials.gov registry ...

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