Journal: Frontiers in Neuroscience

Article Title: Gradual Restraint Habituation for Awake Functional Magnetic Resonance Imaging Combined With a Sparse Imaging Paradigm Reduces Motion Artifacts and Stress Levels in Rodents

doi: 10.3389/fnins.2021.805679

Figure Lengend Snippet: Motion estimations derived from MR images during the auditory functional magnetic resonance imaging (fMRI) acquisition. (A–D) Histograms (A,B) and peak mean of the estimated rotation (C) and translation (D) motion parameters. (E) Representative example of estimated translation levels for a single subject (SJ 3). (See for motion traces of all other subjects). The red lines represent 1/4 of the voxel size. The vertical black line indicates the location of a spike in the time course that was removed using the Matlab toolbox, ArtRepair. Low estimated motion parameter values recorded during the whole fMRI acquisition reflect a physiological and calm state of the animals.

Article Snippet: The “art_global” graphical user interface (GUI), part of the MATLAB toolbox ArtRepair ( , ), was used to remove spikes in the time course by clipping all values higher than 3.04 standard deviations from a rolling mean.

Techniques: Derivative Assay, Functional Assay, Magnetic Resonance Imaging

Journal: Frontiers in Neuroscience

Article Title: Gradual Restraint Habituation for Awake Functional Magnetic Resonance Imaging Combined With a Sparse Imaging Paradigm Reduces Motion Artifacts and Stress Levels in Rodents

doi: 10.3389/fnins.2021.805679

Figure Lengend Snippet: Estimated motion levels for individual animals during auditory functional magnetic resonance imaging (fMRI) acquisition. (A–E) Estimated motion levels (translations) for five individual animals during auditory fMRI acquisition. Motion levels during the auditory task are lower and more stable compared to the levels detected during the resting state acquisitions . The red lines represent 1/4 of the voxel size. The vertical black line indicates the location of a spike in the time course that was removed using the Matlab toolbox, ArtRepair.

Article Snippet: The “art_global” graphical user interface (GUI), part of the MATLAB toolbox ArtRepair ( , ), was used to remove spikes in the time course by clipping all values higher than 3.04 standard deviations from a rolling mean.

Techniques: Functional Assay, Magnetic Resonance Imaging