21 papers · ranked by Valyu relevance
José M. Soares, Ricardo Magalhães, Pedro S. Moreira, Alexandre Sousa + 5 more
'Edward Ganz' 'Adriana Sampaio' 'Victor Alves' 'Paulo Marques' 'Nuno Sousa'] Functional Magnetic Resonance Imaging (fMRI) studies have become increasingly popular both with clinicians and researchers as they are capable of providing unique insights into brain functions. However, multiple technical considerations…
Hussain Khalid Al-Arfaj, Abdulaziz Mohammad Al-Sharydah, Sari Saleh AlSuhaibani, Soliman Alaqeel + 3 more
'Sari Saleh AlSuhaibani' 'Soliman Alaqeel' 'Tarek Yousry' 'Yoshihiro Noda' 'Rajendra D Badgaiyan'] Functional magnetic resonance imaging (fMRI) is among the newest techniques of advanced neuroimaging that offer the opportunity for neuroradiologists, neurophysiologists, neuro-oncologists, and neurosurgeons to…
Yi Qing Yvette Ni, Solana Redway, Aida Momeni, Ava Momeni + 3 more
In the context of task-based functional magnetic resonance imaging (fMRI), cognitive modes can be defined as task-general cognitive/sensory/motor processes which reliably elicit specific blood-oxygen-level-dependent (BOLD) signal pattern configurations. A number of cognitive modes are detectable with task-based fMRI…
Parsa Razmara, Takfarinas Medani, Anand A. Joshi, Majid Abbasi Sisara + 5 more
Low-eld MRI scanners operating at 0.55 Tesla oer several advantages, such as reduced susceptibility artifacts and better compatibility with simultaneous EEG recordings . However, the spatial coverage limitations and temporal eciency of this eld present challenges to robust taskbased fMRI . This study introduces a…
Valeria Vazquez-Trejo, Binyam Nardos, Bradley L. Schlaggar, Damien A. Fair + 1 more
'Damien A. Fair' 'Oscar Miranda-Dominguez'] Task-based functional MRI (fMRI) has greatly improved understanding of brain functioning, enabling the identification of brain areas associated with specific cognitive operations. Traditional analyses are limited to associating activation patterns in particular regions with…
Sasideep Pasumarthi, Satwik Bathula, Nitya Tiwari, Himanshu Padole
Objective Recent advances in neuroimaging have highlighted the growing utility of resting-state functional magnetic resonance imaging (rs-fMRI) as an alternative to task-based fMRI. In addition to being simpler, cost-effective, and time-efficient, rs-fMRI is particularly advantageous for non-compliant populations such…
Michelle F. Miranda, Jeffrey S. Morris
In this paper, we introduce a new Bayesian approach for analyzing task fMRI data that simultaneously detects activation signatures and background connectivity. Our modeling involves a new hybrid tensor spatial-temporal basis strategy that enables scalable computing yet captures nearby and distant intervoxel correlation…
Da Zhi, Jingnan Du, Susan Whitfield-Gabrieli, Jörn Diedrichsen + 1 more
Individual-specific cortical parcellations enable the characterization of brain network organization that is often obscured by population-level atlases, with broad implications for both basic neuroscience and translational applications. However, existing methods rely primarily on resting-state fMRI and underutilize…
Javier Rasero, Hannelore Aerts, Marlis Ontivero Ortega, Jesus M. Cortes + 2 more
Intrinsic Connectivity Networks, patterns of correlated activity emerging from “resting-state” Blood Oxygenation Level Dependent time series, are increasingly being associated to cognitive, clinical, and behavioral aspects, and compared with the pattern of activity elicited by specific tasks. We study the…
Bassel Arafat, Caroline Nettekoven, Jinkang Derrick Xiang, Jörn Diedrichsen
Functional brain mapping is an important tool to understand the organization of the human brain, both at the group level, but also to an increasing degree at the level of the individual. There are currently two main approaches to do so. Resting-state fMRI relies on inter-regional correlations of random fluctuations of…
Yasser Alemán‐Gómez, Ana Arribas‐Gil, Manuel Desco, Antonio Elias-Fernandez + 1 more
'Antonio Elias-Fernandez' 'Juan Romo'] Task-based functional magnetic resonance imaging (task fMRI) is a non-invasive technique that allows identifying brain regions whose activity changes when individuals are asked to perform a given task. This contributes to the understanding of how the human brain is organized in…
Paris A. Karakasis, Athanasios P. Liavas, Nicholas D. Sidiropoulos, Panagiotis G. Simos + 1 more
'Panagiotis G. Simos' 'Efrosini Papadaki'] Abstract—Functional magnetic resonance imaging (fMRI) is one of the most popular methods for studying the human brain. Task-related fMRI data processing aims to determine which brain areas are activated when a specific task is performed and is usually based on the Blood Oxygen…
Qolamreza R. Razlighi
While functional connectivity networks are often extracted from resting-state fMRI scans, they have been shown to be active during task performance as well. However, the effect of an in-scanner task on functional connectivity networks is not completely understood. While there is evidence that task-evoked positive BOLD…
Jie Huang
Human brain consists of many functional systems from the essential sensory, motor, attention and memory systems to higher order cognitive functions such as reasoning and language. Performing even a simple task may evoke multiple systems and cognitive functions, resulting in a whole brain activity across the entire…
Roselyne Chauvin, Maarten Mennes, Jan Buitelaar, Christian Beckmann
In recent years, several large-scale neuroimaging efforts have been launched in an attempt to tackle a potential lack of power in the context of small effect sizes. However, within these large-scale efforts different cognitive tasks are typically treated independently, while the availability of such large databases…
Grégoria Kalpouzos, Johan Eriksson, Daniel Sjölie, Jonas Molin + 2 more
'Lars Nyberg' 'Olaf Sporns'] Background Prospective memory (PM) denotes the ability to remember to perform actions in the future. It has been argued that standard laboratory paradigms fail to capture core aspects of PM. Methodology/Principal Findings We combined functional MRI, virtual reality, eye-tracking and verbal…
Robert Leech, Gregory Scott, Robin Carhart‐Harris, Federico Turkheimer + 2 more
'Federico Turkheimer' 'Simon D. Taylor‐Robinson' 'David Sharp'] 1 Division of Brain Sciences, Hammersmith Hospital, Imperial College London, Du Cane Road, London, W12 0NN, United Kingdom, 2 Department of Neuroimaging, Institute of Psychiatry, King's College London, De Crespigny Park, London SE5 8AF, 3 Department of…
Authors not listed
Alzheimer’s disease (AD) is a neurodegenerative disorder characterized by progressive cognitive decline and widespread neurovascular disturbances. Traditional fMRI provides valuable spatial maps of blood-oxygen-level-dependent (BOLD) changes but often lacks the capacity to quantify the interplay of cerebral blood flow…
Siddharth Nayak, Seyed Hani Hojjati, Sindy Ozoria-Blake, Farnia Feiz + 3 more
Human brain activities measured by fMRI can be categorized into at least two distinct categories; 1) spontaneous: slow (< 0.1 Hz) but inter-regionally coherent fluctuations in MR signal, and 2) task-evoked: change in the MR signal due to external stimulation. To date, there is no consensus in the field about the roles…
Christopher H. Chatham, David Badre
"… to say that neuroimaging answers only the 'where' questions is to confuse the superficial format of raw neuroimaging data with the content of the questions those data can answer; Neuroimagers collecting fMRI data need no more restrict themselves to "where" questions than cognitive psychologists measuring reaction…
Yukihito Yomogida, Motoaki Sugiura, Yoritaka Akimoto, Carlos Makoto Miyauchi + 2 more
'Carlos Makoto Miyauchi' 'Ryuta Kawashima' 'Cosimo Urgesi'] Event simulation (ES) is the situational inference process in which perceived event features such as objects, agents, and actions are associated in the brain to represent the whole situation. ES provides a common basis for various cognitive processes, such as…