A Functional Magnetic Resonance Imaging Study of the Cognitive Estimation
نویسندگان
چکیده
The Cognitive Estimation Test (CET) represents a novel diagnostic tool for quantifying the ability to provide accurate cognitive estimates. Cognitive estimates are supposed to result from frontal cortex activity. The general aim of our study was to evaluate the brain regions responsible for cognitive estimation. In a group of ten healthy volunteers we used functional magnetic resonance imaging (fMRI) to detect the brain systems involved in cognitive estimation. Four blocks of experimental estimation condition alternated with the control condition with each block consisting of 8 visually-presented questions. We have confirmed that the CET increases the fMRI signal in the left inferior frontal gyrus (Brodmann’s Area, BA 47) and the left middle frontal gyrus (BA 9). Further we detected activation in the bilateral lingual gyrus (BA 18), right superior parietal lobule (BA 7) and cerebellum. These data indicate that CET is connected not only with frontal but also with parieto-occipital system activation.
منابع مشابه
Brain Single Photon Emission Computed Tomography Scan (SPECT) and Functional MRI in Systemic Lupus Erythematosus Patients with Cognitive Dysfunction: A Systematic Review
Objective(s): Systemic lupus erythematosus (SLE) is an autoimmune disease with a wide range of clinical manifestations. Cognitive dysfunction is one of the manifestations that could present prior to the emergence of any other neuropsychiatric involvements in SLE. Cognitive dysfunction is a subtle condition occurring with ahigh frequency. However, there is no data on the correlation of cognitive...
متن کاملRepeatability of Detecting Visual Cortex Activity in Functional Magnetic Resonance Imaging
Introduction As functional magnetic resonance imaging (fMRI) is too expensive and time consuming, its frequent implementation is difficult. The aim of this study is to evaluate repeatability of detecting visual cortex activity in fMRI. Materials and Methods In this study, 15 normal volunteers (10 female, 5 male; Mean age±SD: 24.7±3.8 years) attended. Functional magnetic resonance images were ob...
متن کاملResting-state Functional Connectivity During Controlled Respiratory Cycles Using Functional Magnetic Resonance Imaging
Introduction: This study aimed to assess the effect of controlled mouth breathing during the resting state using functional magnetic resonance imaging (fMRI). Methods: Eleven subjects participated in this experiment in which the controlled “Nose” and “Mouth” breathings of 6 s respiratory cycle were performed with a visual cue at 3T MRI. Voxel-wise seed-to-voxel maps and whole-brain region of i...
متن کاملUsing functional magnetic resonance imaging (fMRI) to explore brain function: cortical representations of language critical areas
Pre-operative determination of the dominant hemisphere for speech and speech associated sensory and motor regions has been of great interest for the neurological surgeons. This dilemma has been of at most importance, but difficult to achieve, requiring either invasive (Wada test) or non-invasive methods (Brain Mapping). In the present study we have employed functional Magnetic Resonance Imaging...
متن کاملSoftware Tools for the Analysis of Functional Magnetic Resonance Imaging
Functional magnetic resonance imaging (fMRI) has become the most popular method for imaging of brain functions. Currently, there is a large variety of software packages for the analysis of fMRI data, each providing many features for users. Since there is no single package that can provide all the necessary analyses for the fMRI data, it is helpful to know the features of each software package. ...
متن کاملUsing functional magnetic resonance imaging (fMRI) to explore brain function: cortical representations of language critical areas
Pre-operative determination of the dominant hemisphere for speech and speech associated sensory and motor regions has been of great interest for the neurological surgeons. This dilemma has been of at most importance, but difficult to achieve, requiring either invasive (Wada test) or non-invasive methods (Brain Mapping). In the present study we have employed functional Magnetic Resonance Imaging...
متن کامل