Showing 1-25 of 775 resultsfor "Index Terms":Frontal Locations
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EEG based Visualization and Analysis of Emotional processing in Major Depressive Disorder
R.R. Gayathiri;Bhuvana Devi M.;G.Aghil Kavya;Mahesh Veezhinathan;B. Geethanjali
2020 6th International Conference on Advanced Computing and Communication Systems (ICACCS)
Year: 2020 | Conference Paper |
Cited by: Papers (3)
Major Depressive Disorder is one of the principal causes of disability globally. It is characterized by low self-regard and thoughts of hopelessness. This study aims at analyzing the brain activity during emotional processing in depressed patients. Fifteen adults with a HDRS-17 score of greater than 20 participated in the study. EEG was recorded while viewing two categories of IAPS pictures namely...Show More
A Head Phantom Study of Frontal Lobe Epilepsy Localization With Multichannel Acoustoelectric Brain Imaging
Gangnan Han;Xizi Song;Xinrui Chen;Tong Han;Minpeng Xu;Dong Ming
Acoustoelectric brain imaging (ABI) is a new modality for mapping brain electrical activity. This study demonstrates the feasibility of multichannel ABI for frontal lobe epilepsy localization with millimeter spatial resolution. First, the feasibility of frontal signal detection of ABI is investigated with different electrode configurations in both simulation and head phantom experiments. Both sing...Show More
Effects of mismatch negative elicited by auditory deviant of horizontal locations in virtual space
2022 16th ICME International Conference on Complex Medical Engineering (CME)
Year: 2022 | Conference Paper |
The encoding of auditory spatial through neural circuits in auditory cortexes is ongoing research. The mismatch negativity (MMN) is a sensitive indicator of pre-attention auditory change detection, which has been to explore the potential mechanism of the auditory spatial information cortex. This paper studies the MMN response affected by the horizontal location deviance in virtual space using a pa...Show More
Source analysis of lesional frontal-lobe epilepsy
P. Ossenblok;M. Fuchs;D.N. Velis;E. Veltman;J.P. Pijn;F.H.L. da Silva
Patients with frontal-lobe epilepsy comprise the second largest group undergoing epilepsy surgery. It has been reported that the difficulty in localizing the epileptogenic zone in these patients is due to the rapid spread of the epileptiform activity within the frontal lobe and to adjoining regions of the brain. We formulated the question of whether the functional localization of dynamic sources o...Show More
Neural Systems for Visual Orienting and Their Relationships to Spatial Working Memory
Journal of Cognitive Neuroscience
Cited by: Papers (1)
We investigated neural correlates of human visual orienting using event-related functional magnetic resonance imaging (fMRI). When subjects voluntarily directed attention to a peripheral location, we recorded robust and sustained signals uniquely from the intraparietal sulcus (IPs) and superior frontal cortex (near the frontal eye field, FEF). In the ventral IPs and FEF only, the blood oxygen leve...Show More
Study of brain activity during total sleep deprivation
Teja Mannepalli;Nandini Rajaram;Priyadarshini Mishra;Aurobinda Routray
IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society
Year: 2021 | Conference Paper |
To study the effect of total sleep deprivation on brain activity using EEG. Methodology: In this paper, the EEG of sixteen subjects (Mean = 21.5; SD = ±2.5) is recorded just after they woke up from sleep. Then, they are sleep deprived for the next twenty-four hours, and the EEG is recorded after sleep deprivation. The raw EEG data is pre-processed. The source localization is performed by a recentl...Show More
Although the content of working memory (WM) can be decoded from the spatial patterns of brain activity in early visual cortex, how populations encode WM representations remains unclear. Here, we address this limitation by using a model-based approach that reconstructs the feature encoded by population activity measured with fMRI. Using this approach, we could successfully reconstruct the locations...Show More
EEG-Based Brain Source Localization of Mental Stress
Nada Zahour;Malik Nasir Afzal Khan;Hasan Mir;Hasan Al-Nashash
2024 IEEE Industrial Electronics and Applications Conference (IEACon)
Year: 2024 | Conference Paper |
Workplace demands and pressures often lead to mental stress, affecting productivity and well-being. In parallel, in neuroscience and clinical research, the precise localization of the brain source activity using electroencephalography (EEG) data is of significant importance. This paper focuses on utilizing EEG data collected from volunteers consisting of administrative assistants and staff at the ...Show More
Spatiotemporal brain activities in recalling sentence by loci mnemonic system
2007 IEEE International Conference on Systems, Man and Cybernetics
Year: 2007 | Conference Paper |
To investigate the brain activity during human recalling system of memory, the authors recorded electroencephalograms (EEGs) from one subject in recalling English sentences which had stored by loci mnemonic system. The subject had stored almost three thousands English sentences for seven years by loci mnemonic method. We displayed one number corresponding to one sentence on CRT.Show More
Neural Understanding of STEM Activities
2024 International Symposium on Computer Science and Educational Technology (ISCSET)
Year: 2024 | Conference Paper |
This study investigated brainwave data focused on the frontal and temporoparietal lobes of the brain using electroencephalogram (EEG) sensors to understand neural processes during learning. 20 university student's neural data were collected during STEM learning activities encompassing “working memory’, ‘arithmetic functioning’, ‘cognitive flexibility’, ‘mental flexibility” and ‘planning”. The Rand...Show More
The cortical and sub-cortical network of sensory evoked response in healthy subjects
2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)
Year: 2013 | Conference Paper |
The aim of this study was to find the cortical and sub-cortical network responsible for the sensory evoked coherence in healthy subjects during electrical stimulation of right median nerve at wrist. The multitaper method was used to estimate the power and coherence spectrum followed by the source analysis method dynamic imaging of coherent sources (DICS) to find the highest coherent source for the...Show More
Normal functioning of the attentional orienting system is critical for effective behavior and is predicated on a balanced interaction between goal-directed (endogenous) processes and stimulus-driven (exogenous) processes. Although both systems have been subject to much investigation, little is known about the neural underpinnings of exogenous orienting. In the present study, we examined the early ...Show More
The Brain Network for Deductive Reasoning: A Quantitative Meta-analysis of 28 Neuroimaging Studies
Journal of Cognitive Neuroscience
Cited by: Papers (1)
Over the course of the past decade, contradictory claims have been made regarding the neural bases of deductive reasoning. Researchers have been puzzled by apparent inconsistencies in the literature. Some have even questioned the effectiveness of the methodology used to study the neural bases of deductive reasoning. However, the idea that neuroimaging findings are inconsistent is not based on any ...Show More
Preserved Adjustment but Impaired Awareness in a Sensory-Motor Conflict following Prefrontal Lesions
Journal of Cognitive Neuroscience
Cited by: Papers (1)
Control of action occurs at different stagesof the executive process, in particular at those of sensory-motor integration and conscious monitoring. The aim of this study was to determine the implication of the prefrontal cortex in the control of action. For that purpose, we compared the performance of 15 patients with frontal lobe lesions and 15 matched controls on an experimental paradigm generat...Show More
Dipole localization of eeg and its application to detection of origin of epilepsy
2010 World Automation Congress
Year: 2010 | Conference Paper |
The paper introduces a confidential region proposed by T. Yamazaki et al., which is equipped with the equivalent dipole source localization software; SinaPointPro (NEC Corporation). This confidence limit is defined on a direction of the radius. This method enables to detect the origin of the epilepsy. And also the paper treats a series of its applications by the present author. The author and his ...Show More
Neuromodulation and time-dependent plasticity in a model of foraging behavior
2008 7th IEEE International Conference on Development and Learning
Year: 2008 | Conference Paper |
In foraging behavior, where an animal searches for food caches, it is imperative for the animal to remember the locations and routes to these caches. An important consideration is the means by which the organism takes the appropriate actions to lead it to a goal that satisfies a particular need. We introduce a time-dependent plasticity rule that biases movement in a particular direction by develop...Show More
Recently, research has been conducted on virtual hand illusion (VHI), which rubber hand illusion (RHI) is induced in a virtual space. In this study, the spatial continuity of the body was broken in VR, and the effect of the spatial relationship between the virtual hand and the real hand on the sense of ownership was analyzed. Introspective reports were strongly correlated with synchronization of b...Show More
A Developmental Functional MRI Study of Prefrontal Activation during Performance of a Go-No-Go Task
Journal of Cognitive Neuroscience
Cited by: Papers (2)
This study examines important developmental differences in patterns of activation in the prefrontal cortex during performance of a Go-No-Go paradigm using functional magnetic resonance imaging (fMRI). Eighteen subjects (9 children and 9 adults) were scanned using gradient echo, echo planar imaging during performance of a response inhibition task. The results suggest four general findings. First, t...Show More
Cortical Activation Patterns during Long-term Memory Retrieval of Visually or Haptically Encoded Objects and Locations
The present study used functional magnetic resonance imaging to delineate cortical networks that are activated when objects or spatial locations encoded either visually (visual encoding group, n = 10) or haptically (haptic encoding group, n = 10) had to be retrieved from long-term memory. Participants learned associations between auditorily presented words and either meaningless objects or locatio...Show More
The Role of Segmentation in Phonological Processing: An fMRI Investigation
Phonological processes map sound information onto higher levels of language processing and provide the mechanisms by which verbal information can be temporarily stored in working memory. Despite a strong convergence of data suggesting both left lateralization and distributed encoding in the anterior and posterior perisylvian language areas, the nature and brain encoding of phonological subprocesse...Show More
A functional approach to brain processing is introduced associated with control models, in which 'observer' models of effectors and other parts of the external world are used for improved processing. These models are briefly applied to higher cognitive processes (working memory and attention) using the presence of a monitor system, so as to lead to a general framework for analysing brain function.Show More
Electroencephalography (EEG) emerged as a highly relevant signal to human emotion, brain diagnosing and brain–computer interfaces (BCI) applications. In this paper, the EEG signal is used to evaluate the cognitive response of subjects during watching test video clips. The measurements are performed with 25 subjects using eight channels while simultaneously running the video clips. The β and γ wave...Show More
The effect of continuous ELF-MFs on the level of 5-HIAA in the raphe nucleus of the rat
Journal of Radiation Research
Cited by: Papers (1)
The aim of this study was to investigate the effect of continuous extremely low frequency magnetic fields (ELF-MFs) with a frequency of 10 Hz and an intensity of 690–720 μT on the level of 5-hydroxyindolacetic acid (5-HIAA) in adult male Wistar rats. A total of 24 adult Wistar male rats were used, and after exposure with an ELF-MF for 15 successive days, all rats in each test were anesthetized wit...Show More
Quantification of abnormal coordination of brain activity during an auditory task in epilepsy
D. Perez;G. Ivanova;M.E. Kirlangic;G. Henning;D. Muller;R. Both
Brain electrical activity acquired under cognitive paradigms is quantified using several different methods. To compare the elicited response to an auditory oddball task between normal subjects and a group of refractory epilepsy patients, event-related synchronization/ desynchronization (ERS/ERD) was analyzed in this study. Our objective is to test whether such a quantitative parameter can be a fea...Show More
Classification based decoding and understanding of eye electroencephalography movements for robotics application
Smart Cities Symposium 2018
Year: 2018 | Conference Paper |
This research has been directed towards using Electroencephalography (EEG) for observing and understanding brain thinking, once interacting with a given scene. While doing that, there are number of substantial applications and implications for development. Eye-Electroencephalography is utilized for medical, raking purposes, medical research, in addition, to help people with disabilities. In order ...Show More
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