Results 1 to 10 of about 96,430 (217)
Psilocybin alters visual contextual computations [PDF]
Nature CommunicationsPsilocybin alters perception and brain dynamics. Here, we investigate the effects of psilocybin using psychophysics, ultra-high field functional MRI, and computational modeling.
Marco Aqil +4 more
doaj +2 more sources
Individualized cognitive neuroscience needs 7T: Comparing numerosity maps at 3T and 7T MRI
NeuroImage, 2021 The field of cognitive neuroscience is weighing evidence about whether to move from the current standard field strength of 3 Tesla (3T) to ultra-high field (UHF) of 7T and above.
Yuxuan Cai +4 more
doaj +1 more source
Topographic numerosity maps cover subitizing and estimation ranges
Nature Communications, 2021 Here, the authors show that the brain represents small and large numerosity ranges in a continuous topographic map, in line with the idea that differences in map properties underlie differences in perception.
Yuxuan Cai +6 more
doaj +1 more source
Nature Communications, 2021 Topographically organized tuned responses to haptic numerosity were found in the human brain. The responses to visual or haptic numerosity shared a similar large-scale cortical network, yet the maps of the two modalities only partially overlapped ...
Shir Hofstetter +3 more
doaj +1 more source
Can 7T MPRAGE match MP2RAGE for gray-white matter contrast?
NeuroImage, 2021 Ultra-High Field (UHF) MRI provides a significant increase in Signal-to-Noise Ratio (SNR) and gains in contrast weighting in several functional and structural acquisitions. Unfortunately, an increase in field strength also induces non-uniformities in the
Ícaro A.F. Oliveira +4 more
doaj +1 more source
Comparing hand movement rate dependence of cerebral blood volume and BOLD responses at 7T
NeuroImage, 2021 Functional magnetic resonance imaging (fMRI) based on the Blood Oxygenation Level Dependent (BOLD) contrast takes advantage of the coupling between neuronal activity and the hemodynamics to allow a non-invasive localisation of the neuronal activity.
Ícaro A.F. de Oliveira +4 more
doaj +1 more source
Comparing BOLD and VASO-CBV population receptive field estimates in human visual cortex
NeuroImage, 2022 Vascular Space Occupancy (VASO) is an alternative fMRI approach based on changes in Cerebral Blood Volume (CBV). VASO-CBV fMRI can provide higher spatial specificity than the blood oxygenation level-dependent (BOLD) method because the CBV response is ...
Ícaro A.F. Oliveira +5 more
doaj +1 more source
Advances in resting state fMRI acquisitions for functional connectomics
NeuroImage, 2021 Resting state functional magnetic resonance imaging (rs-fMRI) is based on spontaneous fluctuations in the blood oxygen level dependent (BOLD) signal, which occur simultaneously in different brain regions, without the subject performing an explicit task ...
Luisa Raimondo +6 more
doaj +1 more source
HardwareX, 2023 The instrumentation of a giant loop antenna dedicated to environmental measurement, on a unique scientific site and intended to be open to the scientific community is presented. An open-source, low-cost electronic system has been designed, developed, and
Clément Dezord +4 more
doaj +1 more source
Proceedings of the 49th ACM Technical Symposium on Computer Science Education, 2018 Enrollments in Computer Science classes have been increasing at an exponential rate in many colleges and universities, which has resulted in a rapid increase in class size especially for the Introduction to Programming classes. The Spinoza system was developed as a way to add active learning to very large CS1 classes taught in Python.
Timothy Hickey, Fatima Abu Deeb
+4 more sources