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BESA Statistics Update History

BESA Statistics Update History

BESA Statistics Update History

Product catalog summary
Overview: BESA Statistics 2.1 is a software update primarily for research purposes, reclassified under the European Medical Device Directive. It introduces new features, improvements, bug fixes, and known issues.
New Features:
  • Connectivity data type can now be used across all workflows, allowing direct import of results from BESA Connectivity.
  • Configurable slice view for image data in orthogonal orientations.
Improvements:
  • Adjustable color themes and new color maps for data visualization.
  • Support for high DPI displays and modernized interface.
  • Enhanced data import capabilities, including support for time-frequency data with wavelet analysis.
  • No upper limit on the number of data files imported.
  • Cluster summary results now include detailed project settings and statistical values.
  • New image export format (svg) and improved clipboard functionality for screenshots and summaries.
  • Improved random number generator.
Bug Fixes:
  • Resolved program crashes related to ANOVA projects and identical image data conditions.
  • Fixed issues with data export times and image export in time-frequency mode.
Known Issues:
  • In ANOVA workflows, the number of conditions cannot be changed after proceeding to the Load Data step.
  • In ANCOVA workflows, data order in covariates cannot be changed.
Previous Versions:
  • BESA Statistics 2.0 (July 2015): Introduced cluster permutation testing for ANOVA/ANCOVA, post-hoc testing, and OpenMP support for faster calculations.
  • BESA Statistics 1.0 (February 2014): Released as a 64-bit version, improved exporting options, and fixed scaling issues.
  • BESA Statistics 1.0 (July 2012): Enhanced exporting options and data reader capabilities.
  • BESA Statistics 1.0 (May 2012): Improved data reader functionality and scaling, with better error handling for large datasets.
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Catalog excerpts

BESA Statistics Update History-1

BESA Statistics 2.1 December 2020 BESA Statistics Update History Version 2.1 November 2020 General BESA Statistics was re-classified according to guidelines of the European Medical Device Directive (MDR). BESA Statistics 2.1 is not a medical device and can be used for research purposes only. New features  In all workflows, the data type Connectivity can now be used. This enables direct import of results obtained by BESA Connectivity for group statistics on connectivity results in sensor space or source space.  For Image data, a configurable slice view is available that displays sequences in one of three available orthogonal orientation. Improvements Themes and user interaction:  The colour theme can be adjusted between BESA White and the previous BESA Standard.  Several new colour maps are available: o For diverging data types (e.g. two-tailed t-tests): Standard, and Blue to Red. For sequential data types (e.g. F-tests): Standard, Rainbow, Viridis, and White to Red.  High DPI displays are supported, and the overall look and feel was modernized.  The data values are displayed on mouse-over in the detail windows.  In 2D data displays (time-frequency), the cursor can now be set by clicking into the detail windows or into the Top Viewer widgets. Data import:  Time-frequency data stored by BESA Connectivity with wavelet analysis can now be read with the correct (logarithmic) frequency spacing.  Single-trial time-frequency data can now be read in the t-test workflow (*.tfcs data format). Note that the information about time interval and frequency interval used needs to be supplied by the user if it deviates from BESA Connectivity’s defaults.  There is no upper limit on the number of data files imported into the workflow. Data export:  Cluster summary results now also include: o Project settings information The cluster threshold values to reach significance t-, F-, or r-value for each cluster BESA Statistics 2.1 - Update History Rev: 001/12.2020 Copyright © 2020 BESA GmbH, Freihamer Str. 18, 82166 Graefelfing, Germany

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BESA Statistics Update History-2

BESA Statistics 2.1 December 2020 o channel, latency, frequency or coordinate of the cluster maximum as applicable for the data type  A new image export format is available (svg).  Screenshots and cluster summary results can now be copied to the clipboard using the right mouse popup menu. Calculation:  The random number generator was improved. Bugfixes Data import:  When loading an ANOVA project, a program crash could occur. This is fixed (#365, 660).  An error message occurred when total size of files to load exceeded approximately 650 Mbyte. This is fixed (#348).  Specifying identical...

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BESA Statistics Update History-3

BESA Statistics 2.1 December 2020 Previous Versions BESA Statistics 2.0 July 2015 New features - Cluster permutation testing now extended to Analysis of Variance or Covariance (ANOVA / ANCOVA) and Correlation. Post-Hoc testing based on cluster permutation Scheffe’s test. TF-mapping: clusters in the sensor-space time-frequency domain can now be visualized with topographic maps OpenMP support results in massive improvement in calculation times due to use of parallel computing Data Readers - Data reader for BESA’s generic file format (ERP / ERF) Data reader for BrainVision Analyzer 2 data format...

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BESA Statistics Update History-4

BESA Statistics 2.1 December 2020 Scaling - Fixed display bug with time frequency scale bar in the detail window. The scale bar now changes when rescaling. BESA Statistics 1.0 July 2012 Exporting options 1. Images of all data windows can now be exported as vector graphics (eps) or bitmap-based images (png). 2. Statistical results (only cluster permutation statistics) can be exported as comma-separated text-files. The summary export will output group means per cluster, as well as cluster boundaries and significance levels. The detailed export will output mean values per person and cluster for...

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BESA Statistics Update History-5

BESA Statistics 2.1 December 2020 2. Full scaling of SWF and Image data is now possible. Miscellaneous 1. When saving extremely large datasets, BESA Statistics no longer crashes but displays the error message “memory allocation error”. 2. Neighborhood distance values can now contain two digits after the comma for more precision. BESA Statistics 2.1 - Update History Rev: 001/12.2020 Copyright © 2020 BESA GmbH, Freihamer Str. 18, 82166 Graefelfing, Germany

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