Version 5 is a truly significant expansion of functionality over the previous version. Version 5 adds several new analyses (Hilbert transform, head direction analysis and others), multi-taper spectral calculations, statistical tests (t-tests, ANOVA) and immediate data preview. The new version is also faster and can handle multi-gigabyte data files.
Here is the list of the main improvements implemented in version 5 of NeuroExplorer.
When NeuroExplorer version 5 loads a data file, it shows a preview of all data channels:
NeuroExplorer version 5 provides vastly improved spectral analyses of spike trains and continuous channels:
- Single-taper and multi-taper calculations of spectra
- 6 windowing functions
- 3 preprocessing options
- Jackknife confidence
- Ability to replicate Matlab spectral calculations
- Up to 10 times faster calculation of spectral results
Several new analyses of continuous data (LFP) are available:
- Perievent rasters for continuous
- Power spectra for continuous
- Coherence for continuous
- Single trial spectrum analysis
- Single trial phase analysis using Hilbert transform
- There is a new ‘Analyses of Continuous Data’ analysis group that lists all the analyses that can be
used with continuous channels:
Digital filtering options for continuous data are expanded and now include both IIR and FIR filters.
FIR filters can be used when a band-pass filter with a narrow frequency range is required.
- 3 new IIR filters
- 3 new FIR filters
- Power spectra for continuous
- Coherence for continuous
- Single trial spectrum analysis
- Single trial phase analysis using Hilbert transform
There are also improvements in spike train analyses:
- Multi-taper options in spike train spectral analyses
- Firing rate versus head direction analysis
New statistical tests to compare results across conditions can be run directly in NeuroExplorer:
- Implemented via integration with freely available R-project
- ANOVA test across multiple conditions
- T-test test across two conditions
- Wilcoxon test test across two conditions
New version is available as a 64-bit Windows executable. This removes previous memory limitations
(all the available RAM can now be utilized by the program). The new version is also faster: computationally demanding analyses are run in parallel using all CPU cores.
NeuroExplorer Version 5 supports new .nex5 data file format (currently in development) that is more flexible than .nex file format:
- Allows to save files of more than 2 GB in size
- Allows to save unlimited metadata for the whole file and for every file variable in JSON format
The new version has the ability to save and restore results:
- Saves all numerical and graphical results in a series of linked files
- A user can open results files without recalculation and access both graphical and numerical results
- A user can recalculate analysis results with a single mouse click
National language support is also implemented in the new version:
- NeuroExplorer Version 5 correctly displays folder and file names in any language supported by Windows
- A user can use any language to name files and variables in files
- A user can also use any language to enter comments in data files and scripts
See also: Waveform analysis in NeuroExplorer, Working with Results Files, Dealing with Noise and Artifacts in Data Viewer, New Phase Analysis, Python Scripting in NeuroExplorer