What’s New in NeuroExplorer Version 5

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:

v5DataPreview

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

perirastercont1

  • 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:

ContVarAnalyses

 

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

ttest3

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

languages

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