6 results on '"Spreng RN"'
Search Results
2. Mapping neurotransmitter systems to the structural and functional organization of the human neocortex.
- Author
-
Hansen JY, Shafiei G, Markello RD, Smart K, Cox SML, Nørgaard M, Beliveau V, Wu Y, Gallezot JD, Aumont É, Servaes S, Scala SG, DuBois JM, Wainstein G, Bezgin G, Funck T, Schmitz TW, Spreng RN, Galovic M, Koepp MJ, Duncan JS, Coles JP, Fryer TD, Aigbirhio FI, McGinnity CJ, Hammers A, Soucy JP, Baillet S, Guimond S, Hietala J, Bedard MA, Leyton M, Kobayashi E, Rosa-Neto P, Ganz M, Knudsen GM, Palomero-Gallagher N, Shine JM, Carson RE, Tuominen L, Dagher A, and Misic B
- Subjects
- Humans, Magnetic Resonance Imaging methods, Brain physiology, Positron-Emission Tomography, Neurotransmitter Agents, Brain Mapping methods, Neocortex diagnostic imaging
- Abstract
Neurotransmitter receptors support the propagation of signals in the human brain. How receptor systems are situated within macro-scale neuroanatomy and how they shape emergent function remain poorly understood, and there exists no comprehensive atlas of receptors. Here we collate positron emission tomography data from more than 1,200 healthy individuals to construct a whole-brain three-dimensional normative atlas of 19 receptors and transporters across nine different neurotransmitter systems. We found that receptor profiles align with structural connectivity and mediate function, including neurophysiological oscillatory dynamics and resting-state hemodynamic functional connectivity. Using the Neurosynth cognitive atlas, we uncovered a topographic gradient of overlapping receptor distributions that separates extrinsic and intrinsic psychological processes. Finally, we found both expected and novel associations between receptor distributions and cortical abnormality patterns across 13 disorders. We replicated all findings in an independently collected autoradiography dataset. This work demonstrates how chemoarchitecture shapes brain structure and function, providing a new direction for studying multi-scale brain organization., (© 2022. The Author(s).)
- Published
- 2022
- Full Text
- View/download PDF
3. Le Petit Prince multilingual naturalistic fMRI corpus.
- Author
-
Li J, Bhattasali S, Zhang S, Franzluebbers B, Luh WM, Spreng RN, Brennan JR, Yang Y, Pallier C, and Hale J
- Subjects
- Brain Mapping, Comprehension, Linguistics, Speech, Brain diagnostic imaging, Language, Magnetic Resonance Imaging
- Abstract
Neuroimaging using more ecologically valid stimuli such as audiobooks has advanced our understanding of natural language comprehension in the brain. However, prior naturalistic stimuli have typically been restricted to a single language, which limited generalizability beyond small typological domains. Here we present the Le Petit Prince fMRI Corpus (LPPC-fMRI), a multilingual resource for research in the cognitive neuroscience of speech and language during naturalistic listening (OpenNeuro: ds003643). 49 English speakers, 35 Chinese speakers and 28 French speakers listened to the same audiobook The Little Prince in their native language while multi-echo functional magnetic resonance imaging was acquired. We also provide time-aligned speech annotation and word-by-word predictors obtained using natural language processing tools. The resulting timeseries data are shown to be of high quality with good temporal signal-to-noise ratio and high inter-subject correlation. Data-driven functional analyses provide further evidence of data quality. This annotated, multilingual fMRI dataset facilitates future re-analysis that addresses cross-linguistic commonalities and differences in the neural substrate of language processing on multiple perceptual and linguistic levels., (© 2022. The Author(s).)
- Published
- 2022
- Full Text
- View/download PDF
4. Neurocognitive aging data release with behavioral, structural and multi-echo functional MRI measures.
- Author
-
Spreng RN, Setton R, Alter U, Cassidy BN, Darboh B, DuPre E, Kantarovich K, Lockrow AW, Mwilambwe-Tshilobo L, Luh WM, Kundu P, and Turner GR
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Aging, Humans, Middle Aged, Young Adult, Brain diagnostic imaging, Brain physiology, Magnetic Resonance Imaging, Neuroimaging
- Abstract
Central to understanding human behavior is a comprehensive mapping of brain-behavior relations within the context of lifespan development. Reproducible discoveries depend upon well-powered samples of reliable data. We provide to the scientific community two, 10-minute, multi-echo functional MRI (ME-fMRI) runs, and structural MRI (T1-MPRAGE), from 181 healthy younger (ages 18-34 y) and 120 older adults (ages 60-89 y). T2-FLAIR MRIs and behavioral assessments are available in a majority subset of over 250 participants. Behavioral assessments include fluid and crystallized cognition, self-reported measures of personality, and socioemotional functioning. Initial quality control and validation of these data is provided. This dataset will be of value to scientists interested in BOLD signal specifically isolated from ME-fMRI, individual differences in brain-behavioral associations, and cross-sectional aging effects in healthy adults. Demographic and behavioral data are available within the Open Science Framework project "Goal-Directed Cognition in Older and Younger Adults" ( http://osf.io/yhzxe/ ), which will be augmented over time; neuroimaging data are available on OpenNeuro ( https://openneuro.org/datasets/ds003592 )., (© 2022. The Author(s).)
- Published
- 2022
- Full Text
- View/download PDF
5. Topography and behavioral relevance of the global signal in the human brain.
- Author
-
Li J, Bolt T, Bzdok D, Nomi JS, Yeo BTT, Spreng RN, and Uddin LQ
- Subjects
- Adult, Brain Mapping, Cognition, Humans, Magnetic Resonance Imaging, Principal Component Analysis, Rest, Young Adult, Brain physiology, Nerve Net physiology
- Abstract
The global signal in resting-state functional MRI data is considered to be dominated by physiological noise and artifacts, yet a growing literature suggests that it also carries information about widespread neural activity. The biological relevance of the global signal remains poorly understood. Applying principal component analysis to a large neuroimaging dataset, we found that individual variation in global signal topography recapitulates well-established patterns of large-scale functional brain networks. Using canonical correlation analysis, we delineated relationships between individual differences in global signal topography and a battery of phenotypes. The first canonical variate of the global signal, resembling the frontoparietal control network, was significantly related to an axis of positive and negative life outcomes and psychological function. These results suggest that the global signal contains a rich source of information related to trait-level cognition and behavior. This work has significant implications for the contentious debate over artifact removal practices in neuroimaging.
- Published
- 2019
- Full Text
- View/download PDF
6. Multi-echo fMRI replication sample of autobiographical memory, prospection and theory of mind reasoning tasks.
- Author
-
DuPre E, Luh WM, and Spreng RN
- Subjects
- Brain physiology, Brain Mapping, Humans, Magnetic Resonance Imaging, Mental Recall, Young Adult, Memory, Episodic, Theory of Mind
- Abstract
The default network is involved in self-generated thought, a class of cognition that includes autobiographical memory, prospection, and reasoning about the mental states of others. We collected a replication sample of Spreng and Grady (J Cogn. Neurosci. 22, 1112-1123, 2010), confirming that the default network differentially supports each of these forms of self-generated thought. Here we describe this dataset of multi-echo fMRI data in 31 young adults during autobiographical remembering, imagining, and mentalizing; we also provide an additional resting-state scan for each subject. In this new sample, the findings from the original report are successfully replicated using the same analysis. Physiological measures were additionally collected and allow for interrogation of the impact of multi-echo independent components preprocessing both in task and rest. Future work on this dataset may provide insight into evoked brain response for cued self-generated thought, International Affective Picture System viewing, resting state dynamics, preprocessing procedures, and more. The dataset is accompanied by experimental code for independent behavioral data collection., Competing Interests: The authors declare no competing financial interests.
- Published
- 2016
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.