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Identifying and removing widespread signal deflections from fMRI data: Rethinking the global signal regression problem [article]

Kevin M. Aquino, Ben D. Fulcher, Linden Parkes, Kristina Sabaroedin, Alex Fornito
2019 bioRxiv   pre-print
One of the most controversial procedures in the analysis of resting-state functional magnetic resonance imaging (rsfMRI) data is global signal regression (GSR): the removal, via linear regression, of the  ...  Here, using three independent datasets, we show that reordering carpet plots to emphasize cluster structure in the data reveals a greater diversity of spatially widespread signal deflections (WSDs) than  ...  We thus use the mean gray-matter signal as a proxy for the global signal, and refer to regression of this signal from fMRI data as gray-matter regression (GMR) for clarity, as this better captures our  ... 
doi:10.1101/662726 fatcat:cevukgo535hodpqo77wdob7gta

Identifying and removing widespread signal deflections from fMRI data: Rethinking the global signal regression problem

Kevin M. Aquino, Ben D. Fulcher, Linden Parkes, Kristina Sabaroedin, Alex Fornito
2020 NeuroImage  
One of the most controversial procedures in the analysis of resting-state functional magnetic resonance imaging (rsfMRI) data is global signal regression (GSR): the removal, via linear regression, of the  ...  Global signal fluctuations can be identified visually from a matrix of colour-coded signal intensities, called a carpet plot, in which rows represent voxels and columns represent time.  ...  We thus use the mean gray-matter signal as a proxy for the global signal, and refer to regression of this signal from fMRI data as gray-matter regression (GMR) for clarity, as this better captures our  ... 
doi:10.1016/j.neuroimage.2020.116614 pmid:32084564 fatcat:liwjvapyprcgzab7z52s2ojzfq

39th European Conference on Visual Perception (ECVP) 2016 Barcelona

2016 Perception  
First stage is an unselective stage where attention is distributed and target signal must be detected from the noise originating from other signals.  ...  Here, we use 3 T fMRI pattern classification to decode how these signals are maintained in and beyond V1.  ...  and inverted display orientation: Human ultra high field 9.4 T fMRI People prefer humanlike characteristics, looks and motion in toys, robots and avatars, as long as the likeness is not too compelling  ... 
doi:10.1177/0301006616671273 fatcat:el2dmsuk6zd25pedijucuexl5m

Poster Session I

2014 Neuropsychopharmacology  
Individual EEG slow waves were detected as negative deflections below zero on both F and O signals filtered between 0.5-4 Hz.  ...  Background: Spatio-temporal complexity of cortical activity during sleep is manifested in the occurrence of local and global EEG slow waves, alternation of non-rapid eye movement (NREM) and REM sleep episodes  ...  Individual EEG slow waves were detected as negative deflections below zero on both F and O signals filtered between 0.5-4 Hz.  ... 
doi:10.1038/npp.2014.280 fatcat:xunw4pdn75hlnmhvvksgp2lsse

Oral sessions

2014 Journal of Vestibular Research-Equilibrium & Orientation  
Subjects: Individuals with vestibular disorders aged 18 and over. Data analyses: Rasch analysis was performed in an attempt to shorten the scale and remove redundant items.  ...  CALORIC TESTING: TIME FOR A RETHINK?  ...  Thereafter it interactively determines the impact caused by the disorder using ICF classification, evaluates personal traits and attitudes towards the disorder, and identifies positive aspects.  ... 
doi:10.3233/ves-140516 pmid:24837206 fatcat:bn4poll2njcjlbytqhpt3ni3le

The neurocognitive processing of plausibility and real-world knowledge:A cross-linguistic investigation

Sarah Tune
2014
Our actions are guided by what we know and believe about the world and this knowledge derives primarily from previous sensory and perceptual experiences.  ...  Moreover, the ability to represent this wealth of knowledge about the real world in the conceptualised and symbolic form of language is believed to be exclusive to humans.  ...  We would like to thank Isabel Plauth and Julia Lehmann for help with the data acquisition and Gerry Altmann for comments on a previous version of this manuscript.  ... 
doi:10.17192/z2014.0150 fatcat:c2zngszuyjfqxcus4l5f7f6dge

Long-Term Post-Operative Cognitive Decline in the Elderly: The Effects of Anesthesia Type, Apolipoprotein E Genotype, and Clinical Antecedents

Marie-Laure Ancelin, Guilhem de Roquefeuil, Jacqueline Scali, François Bonnel, Jean-François Adam, Jean-Claude Cheminal, Jean-Paul Cristol, Anne-Marie Dupuy, Isabelle Carrière, Karen Ritchie, Pravat K. Mandal, Vincenzo Fodale
2010 Journal of Alzheimer's Disease  
However, the extent to which these changes may persist following recovery from surgery is still largely unknown.  ...  The aim of this review is to identify an evidence-based perioperative management for patients affected by Alzheimer's disease (AD) that are scheduled to undergo surgery.  ...  ACKNOWLEDGMENTS This work was supported by grants to BW from the Retirement Research Foundation and the Casten Foundation.  ... 
doi:10.3233/jad-2010-100807 pmid:20858969 pmcid:PMC3078520 fatcat:4inyekgoi5ctzhadgxglrjzkpy

PhD PROCEEDINGS ANNUAL ISSUES OF THE DOCTORAL SCHOOL FACULTY OF INFORMATION TECHNOLOGY & BIONICS 2016 PhD PROCEEDINGS ANNUAL ISSUES OF THE DOCTORAL SCHOOL FACULTY OF INFORMATION TECHNOLOGY & BIONICS PhD PROCEEDINGS

Pázmány Péter
unpublished
of 40 data reduction, while keeping the biologically relevant information intact.  ...  We also implemented the compression algorithm as a plugin for HDF5 [30] to make is easily accessible from several different image processing and image visualization environments.  ...  We tested the method on resting-state fMRI data of young and elderly subjects.  ... 
fatcat:rohrwr24czgptpmrm4icheq4yq

Perzeptuelle Stabilität während sakkadischer Augenbewegungen

Steffen Klingenhoefer, Physik, Bremmer, Frank (Prof. Dr.)
2012
Humans and other primates perform multiple fast eye movements per second in order to redirect gaze within the visual field.  ...  These so called saccades challenge visual perception: During the movement phases the projection of the outside world sweeps rapidly across the photoreceptors altering the retinal positions of objects that  ...  Acknowledgments This research was supported by EU-MEMORY, DFG FOR-560, and DFG GRK-885-NeuroAct. Acknowledgment This work was supported by DFG (GRK-885; FOR-560) and EU (MEMORY).  ... 
doi:10.17192/z2012.0938 fatcat:46gd6adv4vbzxcqdn5dhlcwacu

Conway_columbia_0054D_15930.pdf [article]

2020
Conway Donna Haraway's Chthulucene suggests a world in which humans and non-humans are inextricably entangled, a world in which global ecological devastation demands new ways of relating across disciplines  ...  In this project, I embrace the rich fabric of Narrative Inquiry in English Education and knit a diffractive, transdisciplinary reading of current debates in reading/literacy studies, composing speculative  ...  resources in the 'problem' of teaching and learning in a 'global knowledge economy.'  ... 
doi:10.7916/d8-cw3b-8964 fatcat:vlpqepmh6ne2jlt6rbuk5aeixq

Creative Practice and Experimental Method in Electronic Literature and Human Experimental Psychology

Andrew Michael Roberts, Lisa Otty, Martin H. Fischer, Anna Katharina Schaffner, Mediarep.Org
2022
This article discusses issues arising from the relationship between practitioners in Electronic Literature and researchers in the field of Human Experimental Psychology, including the possible emergence  ...  In section 2 we discuss the concept of the "experimental" in aesthetic and scientific contexts, identifying the relatively universal model of the subject constructed through experimental procedure in Psychology  ...  than the materiality of the film and the basic-level processing of visual and aural signals).  ... 
doi:10.25969/mediarep/17757 fatcat:b4r32c4qxfdmdjwg5pwsbh4tjm

The challenge presented by dissociations and synaesthesia for the neo-dualism of David Chalmers and Tim Bayne

Robert Fletcher
2020
separated from awareness.  ...  In addition, synaesthesia is advanced as a problem case for Bayne's unity contention. I argue that the dissociations are not easily dismissed, and present a real challenge for neo-cartesianism.  ...  It seems to hint at a vicious regress in the HOT picture, but if so, it is easily deflected.  ... 
doi:10.48683/1926.00101663 fatcat:ta7qboxsvfbhdmpmv7npsg62by

Activist Media and Biopolitics. Critical Media Interventions in the Age of Biopower [article]

(:Unkn) Unknown, Mediarep, Philipps Universität Marburg, Wolfgang Sützl, Theo Hug
2018
Acknowledgements With support from the Digital Urban Living Research Center, partly funded by the Danish Council for Strategic Research, grant number 2128-07-0011.  ...  The Parser identifies user commands, telephone numbers, and the messages themselves from the stream of text data.  ...  mostly removed from public scrutiny.  ... 
doi:10.25969/mediarep/792 fatcat:36w5l6lzunewlnvrexcyvr7mce

Where is cognition? Towards an embodied, situated, and distributed interactionist theory of cognitive activity [article]

Stephen Hill, University Of Canterbury
2010
It is argued that, taken together, these themes signal the emergence of a new approach to cognition called embodied, situated, and distributed interactionism.  ...  Challenges to these assumptions are illustrated using empirical findings and theoretical arguments from the fields such as situated robotics, dynamical systems approaches to cognition, situated action  ...  the physical substrate (see Bechtel, 1988 for a summary of some of the attempts at saving functionalism from the problems Block identifies).  ... 
doi:10.26021/8413 fatcat:4ehpjwfgn5afllfa777ucy2paa

The neuroscience of movement, time and space : an arts educational study of the embodied brain

Anne-Marie R. LaMonde
2011
Additionally, further insights are drawn from cognitive, social, and neurosciences with the purpose of broadening the scope of understanding that stretches across multiple disciplines wherein film and  ...  brain-body-mind that range from consciousness to learning.  ...  , all the while removed from the perspective granted by distance.  ... 
doi:10.14288/1.0055204 fatcat:aw6n4qvapnhm3doqgqcdpmdxoq
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