Virtual digital brain Releases

vdb VDB2.0

gyuzhn@www.nitrc.org (Guang-Yu Zhang) — Wed, 01 Feb 2023 6:01:00 GMT

We have improved the procedure and have added some functions，such as the functional complexity of brain region (including functional complexity based on Shannon theory, functional complexity based on Pearson's correlation coefficient, functional complexity based on Permutation entropy, etc.), the information interaction efficiency of brain region, functional connectivity strength of the brain region, in the software package VDBV2.0. Several bugs on entropy connectivity in VDBV1.9 have been modified, and this version is more convenient for constructing and displaying task signals (i.e. designing fMRI experimental paradigms).

vdb VDB1.9

gyuzhn@www.nitrc.org (Guang-Yu Zhang) — Thu, 05 May 2022 14:22:00 GMT

We have improved the procedure and have added some functions，such as functional complexity of the brain region, information processing efficiency of the brain region, neural activity strength of the brain region, in the software package VDBV1.9. Several bugs have been modified, and this version is more convenient for constructing and displaying task signals (i.e. designing fMRI experimental paradigms).

vdb VDB1.8

gyuzhn@www.nitrc.org (Guang-Yu Zhang) — Tue, 21 Sep 2021 4:27:00 GMT

We have improved the procedure and have added some functions in the software package VDBV1.8.

vdb VDB1.7

gyuzhn@www.nitrc.org (Guang-Yu Zhang) — Fri, 26 Mar 2021 8:35:00 GMT

We have improved the VDB soft in the software package VDBV1.7. Several bugs have been modified, and this version is more convenient for performing 'preprocessing, causal connectivity, statistical analysis, and result display'. In addition, we have added several functions including resting-state information processing speed of brain region and neural activity strength of brain region.

vdb VDB1.6_Windows64bits

gyuzhn@www.nitrc.org (Guang-Yu Zhang) — Mon, 24 Feb 2020 23:31:00 GMT

We have improved the definition of the shortest causal connectivity path and multiple comparison correction in the software package VDBV1.6.

vdb VDBV1.5_Windows64bits

gyuzhn@www.nitrc.org (Guang-Yu Zhang) — Fri, 21 Jun 2019 8:19:00 GMT

vdb VDBV1.5

gyuzhn@www.nitrc.org (Guang-Yu Zhang) — Thu, 02 May 2019 0:29:00 GMT

We have improved the procedure "TaskDesign" and some functions in the software package VDBV1.5. Several bugs have been modified, and this version is more convenient for constructing and displaying task signals (i.e. designing fMRI experimental paradigms). In addition, we have added several functions including 3D visualization of resting-state nodal degree,resting-state shortest path, activated state nodal degree , and activated state shorest path. VDB V1.5 is a 3D visualization tool of human brain, which is used to construct the virtual digital brain and research neural activities of brain regions evoked by the virtual stimulating signal (or the stimulating signal of task). The virtual digital brain is a human brain model (i.e. a causal connectivity network). Every node of the human brain model denotes a Brodmann's area (or AAL area) of human brain. We can exert the stimulating signal of task to some brain areas of the virtual digital brain and observe activation of brain regions. In addition, this tool V1.5 can also be used to obtain the stimulating signal of task, design task (i.e. design fMRI experimental paradigm), and study interregional causal connectivity and the shortest causal connectivity path (i.e. the strongest causal interactive path) from one brain area to another in the virtual digital brain.

vdb VDB1.4

gyuzhn@www.nitrc.org (Guang-Yu Zhang) — Fri, 01 Feb 2019 14:08:00 GMT

We have improved the procedure "TaskDesign" in the software package VDB 1.4. The VDB 1.4 is more convenient for constructing auditory and visual task signals (i.e. designing fMRI experimental paradigms). VDB1.4 is a 3D visualization tool of human brain, which is used to construct the virtual digital brain and research neural activities of brain regions evoked by the virtual stimulating signal (or the stimulating signal of task). The virtual digital brain is a human brain model (i.e. a causal connectivity network). Every node of the human brain model denotes a Brodmann's area (or AAL area) of human brain. We can exert the stimulating signal of task to some brain areas of the virtual digital brain and observe activation of brain regions. In addition, this tool VDB1.4 can also be used to obtain the stimulating signal of task, design task (i.e. design fMRI experimental paradigm), and study interregional causal connectivity and the shortest causal connectivity path (i.e. the strongest causal interactive path) from one brain area to another in the virtual digital brain.
The individualized virtual digital brain can be constructed by using VDB1.4 based on resting-state fMRI data of every participant. The virtual digital brain technique is similar to virtual reality. To investigate activation of brain regions, the stimulating signal of task is firstly processed, and then translated into an input signal of brain regions. Finally, the input signal is directly exerted to some brain regions of the individualized virtual digital brain instead of exerting to real human brain of every participant. Researchers can exert the stimulating signal of task to any brain area of the virtual digital brain and observe activation of brain regions.

vdb VDB1.3

gyuzhn@www.nitrc.org (Guang-Yu Zhang) — Mon, 03 Dec 2018 9:00:00 GMT

VDB1.3 is a 3D visualization tool of human brain, which is used to research neural activities of brain regions evoked by the virtual stimulating signal (or the virtual task signal). In addition, this tool can also help researchers to study causal relationships among brain regions, nodal degree and the shortest path length from one brain area to another in the directional brain network. This software tool is also used to design tasks and obtain the stimulating signal of task. An individualized virtual digital brain can be constructed by using VDB1.3 based on resting-state fMRI data of one participant. The virtual digital brain is similar to virtual reality technology. To investigate activation of brain regions, the stimulating signal of task is directly exerted to some brain regions of the individualized virtual digital brain instead of exerting to real human brain of every participant. Researchers can exert the stimulating signal of task to any brain area of the virtual digital brain and observe activation of brain regions. VDB1.3 add the function of displaying the virtual digital brain.

vdb VDB1.2

gyuzhn@www.nitrc.org (Guang-Yu Zhang) — Tue, 06 Nov 2018 6:03:00 GMT

VDB1.2 is a major update to the VDB software package. Several bugs have been corrected. Although we have tried hard to produce high quality software, in a project of this size and complexity there are certainly some remaining bugs. Please assist us by reporting bugs to the VDB manager <gyuzhn @163.com >.
VDB1.2 is a 3D visualization tool of human brain, which is used to research neural activities of brain regions evoked by the virtual stimulating signal (or the virtual task signal). In addition, this tool can also help researchers to study causal relationships among brain regions, nodal degree and the shortest path length of the directional brain network.
A Manual is also available in a PDF document on the VDB website: https://www.nitrc.org/projects/vdb/
File Format: VDB1.2 uses theNIFTI-1 file format for the image data.