What's New

aHRV ver. 13.3.0, LT-aHRV ver. 6.0.0, SA-aHRV ver. 8.3.0,
and SA-LTaHRV ver. 5.7.0
The following feature were added:

File preparation:

• Improved compatibility with  Poly5/TMS32  data formats ver. 2.03 and 2.04 (*.S0*)  processed by PortiLab^® (the TMS International^® acquisition software)s was implemented.

Analysis:

aHRV ver. 12.0.0 and SA-aHRV ver. 7.0.0
The following features were added:

Analysis:

aHRV ver. 11.2.0 and SA-aHRV ver. 6.1.0
The following features were added:

File preparation:

• Direct shortcut to the NEW LT-aHRV Analysis (Long-term advanced Heart Rate Variability) module.

Analysis:

LT-aHRV ver. 5.0.0 and SA-LTaHRV ver. 5.0.0

LT-HRV ver. 4.4.0 and SA-LTHRV ver. 3.3.0 will continue to be available for download in the present form until further notice. All present LT-HRV/SA-LTHRV customers may upgrade this product to LT-aHRV/SA-LTHRV ver. 5.0.0 (see Prices).

LT-aHRV ver. 5.0.0 and SA-LTaHRV ver. 5.0.0 are advanced LT-HRV/SA-LTHRV versions with the following advantages:

Analysis:

• A sophisticated and flexible automatic Data Editor function.
• Segmented Statistics: calculation of two additional parameters, RMSSD and pNN index in consecutive time segments. The pNN50, pNN27 and pNNxx radio buttons enable the operator to adjust pNNxx calculations to adult ECG, fetal ECG and ECG of any animal, large or small, respectively.
• Improved compatibility with Finometer® -Beatscope® (www.finapres.com) files was implemented:
  - Display of Event Markers is supported.
  - Display of actual time of day independent of regional formats, not just time elapsed from the start of the recording.  
  - The file may have any arbitrary extension.
  - The number of header (offset) lines is determined automatically, regardless of length.
  - The file can contain either a series of RRI's (in msec or sec), of HR data or Running Time (in sec or h:min:sec format). Running time is the time elapsed since the beginning of the recording. Any running time value minus the immediately preceding running time value equals an RRI.
• Improvement in the Text and MS®-Excel compatibility. The program now ignores non-numeric and empty lines.
• Improved compatibility with PowerLab^® Chart text files files was implemented:
  - The number of header (offset) lines is determined automatically, regardless of length.
  - The operator may select the column in which RRI's (or HR's) are recorded
• Compatibility with binary TXT files recorded by the Del Mar Reynolds^® (now Spacelabs Medical^®) Pathfinder Holter system was improved. Premature beat filtration and interpolation features are incorporated into the procedure.
• Use of demo file examples was made more user-friendly.

File preparation:

• The Filter Preview option enabling the operator both to check whether filtering of the signal would improve the recording and to turn the filter on/off was added.
• Compatibility with the text data files recorded by the Physio-Logger^® registration system  manufactured by med-NATIC^® (Munich, Germany) (www.med-natic.de/e_phylo.htm) was implemented.
• Compatibility with binary data files recorded by the DSI-Ponemah^® (*.RAW) data acquisition and analysis system manufactured by DSI - Data Sciences International was implemented
• Compatibility with DSI-Ponemah^® *.ASCII files was implemented.
• Compatibility with MIT format 80 files was improved.
• Use of demo file examples was made more user-friendly.

aHRV ver. 11.1.0, BPV ver. 8.8.0, BRS ver.5.8.0, SA-BPV ver. 3.5.0 and SA-BRS ver. 3.5.0

File preparation:

aHRV ver. 11.0.4 and SA-aHRV ver. 6.0.1

File preparation:

BPV ver 8.7, BRS ver. 5.7, SA-BPV ver 3.4 and SA-BRS ver 3.4
The following features were added:

File preparation:

LDDA(5) ver. 8.0
The following features were added in the frequency domain analysis (FFT and AR):

• The option to calculate spectral power also in the ULF - Ultra Low Frequency and in the VHF - Very High Frequency bands (in addition to the existing VLF, LF and HF bands). The operator can modify the number and limits of frequency bands which represent the quantitative, numeric results of spectral analysis and give a measure of microcirculation in absolute or normalized units.
• Calculation of two additional parameters, CCVLF (Coefficient of Component Variance for LF) and CCVHF (Coefficient of Component Variance for HF).

SA-aHRV ver. 6.0
The same features were added as to aHRV ver. 11.00 on February 2, 2009

aHRV ver. 11.02 and SA-aHRV ver. 6.00
File preparation:

aHRV ver. 11.0
The following features were added:

File preparation:

aHRV ver. 10.2 and SA-aHRV ver. 5.1
The following features were added:

Analysis:

File preparation:

BPV ver. 8.5 and BRS ver. 5.5
The following features were added:

Analysis:

BPV ver. 8.4, BRS ver. 5.4, SA-BPV ver. 3.3 and SA-BRS ver. 3.3

Analysis:

CVPA ver. 2.1
The following features were added:

BPV ver. 8.3 and  BRS ver. 5.3
The following features were added:

Analysis:

File preparation:

Launch of SA-aHRV ver. 5.0.0, discontinuation of SA-HRV ver. 4.1.0

SA-aHRV ver. 5.0.0 was launched. This is an advanced SA-HRV version with the following advantages:

• a sophisticated and flexible automatic Data Editor function;
• a capability to export the selected analysis results to an Excel (CSV) spreadsheet. The results are saved in groups and automatically and sequentially appended to (a) selected CSV Results file(s);
• continued development with software updates for the foreseeable future;
• Improved compatibility with Excel CSV files. The program now ignores non-numeric strings and sets their value to zero;
• While compatibility with different formats has already been independent of regional settings, it is now also independent of headers containing date/time information in various regional formats, thus enabling the software to use and display also actual time of day independent of regional formats, not just time elapsed from the start of the recording.  

aHRV ver. 10.1 and  LT-HRV ver. 4.4
The following features were added:

• Compatibility with recordings output by the LiDCO™ plus Hemodynamic Monitor in the CSV format;
• Compatibility with the new version 1.01 of XML files recorded by and transferred from the GPRS/Bluetooth/USB Dyna-Vision^® patient monitor manufactured by RS TechMedic BV^® (the Netherlands);
• Improved compatibility with Excel CSV files. The program now ignores non-numeric strings and sets their value to zero;
• While compatibility with different formats has already been independent of regional settings, it is now also independent of headers containing date/time information in various regional formats, thus enabling the software to use and display also actual time of day independent of regional formats, not just time elapsed from the start of the recording.

HRV ver. 9.4.0, LTHRV ver. 4.3.0 and OSAS ver 1.6.0

File preparation:

HRV ver. 9.3.0 and LTHRV ver 4.2.0

Analysis:

LDDA(5) ver. 7.0

Nevrokard LDDA(5), a new software tool designed for Laser Doppler Data Analysis, was released.

Nevrokard™ LDDA(5) program performs Frequency Domain Analysis up to 5Hz and therefore a resampling rate of 10Hz is required.

The following features were added to the LDDA ver. 6.05:

• Frequency domain analysis of up to 5Hz for all compatible files;
• Direct moving from one mode of analysis to another by clicking the individual icons was added, the Back key is no longer there;
• New Print Preview windows design;
• Reading of source files from a CD and saving of the resulting files to a user-selectable hard disk directory; in the absence of a CD the file is written to the source file directory (as before);
• Frequency domain analysis (AR and FFT):Calculation of two additional parameters, LF/(LF+HF) spectral power ratio and HF/(LF+HF) spectral power ratio in consecutive time segments;
• Frequency domain analysis (FFT): Five new spectral windows were added (Blackman Exact, Blackman Harris, Chebyshev, Cosine Tappered, Kaiser).
• Thoroughly revised, simpler and more user-friendly software design.

HRV ver. 9.2.0 and LTHRV ver 4.1.0

Analysis:

LT-HRV ver. 4.0.0 and SA-LTHRV ver 3.0.0
The following features were added:

Analysis:

HRV ver. 9.1.0 and SA-HRV ver 4.1.0
The following features were added:

CVPA ver. 2.0
The following features were added:

HRV ver. 9.0.0 and SA-HRV ver 4.0.0
The following features were added:

Analysis:

CVPA ver. 1.0.0

Nevrokard CVPA (Cardiovascular Parameter Analysis), a new software tool designed for analysis of cardiovascular parameters recorded by Finometer^® (manufactured by Finapres Medical Systems www.finapres.com) in both time and frequency domains, was released.

BRS ver. 5.2.2, BPV ver. 8.2.2,
SA-BRS ver. 3.2.3 and  SA-BPV ver. 3.2,3
The following features were added::

SA-BRS ver. 3.2.1
The following features were added:

HRV ver. 8.8, LT-HRV ver. 3.7, OSAS ver. 1.5,
SA-HRV ver. 3.8 and  SA-LTHRV ver. 2.7
The following features were added:

Analysis:

BRS ver. 5.1, BPV ver. 8.2,
SA-BRS ver. 3.2 and  SA-BPV ver. 3.2
The following features were added:

BRS  and SA-BRS Sequential analysis:

• Baroreflex-related RRI changes may appear only several beats after a BP change. In order to improve flexibility of our software for research under different conditions, we allowed for a user-definable lag/delay of from 0 to 14 beats (the default value is 1 beat).
• A range of graphic improvements - drawing of points, slope and average slope in the graph can be selected.

Analysis - all programs (improvement in the Text and MS-Excel compatibility):

File preparation - all programs:

• Compatibility with files acquired through the Dataquest^® A.R.T. data acquisition & analysis system made by DSI - Data Sciences International^®.
• Correction of the ECG zero line offset for AcqKnowledge^®, Binary format, CODAS^®-WinDAQ, Dataquest^® A.R.T., European Data Format (EDF/EDF+/EDF90), MS-Excel^®, Poly5/TMS32, CED Cambridge Electronic Design^® SON, Text format and SIGMA Medizin-Technik™ VAGUS^®  compatible files. Pronounced deviation of the ECG signal above or below the zero line which makes R wave detection difficult/impossible may be corrected by using the Zero Line Offset.
• Invert function for Binary Format,  Dataquest^® A.R.T.,  CED Cambridge Electronic Design^® SON, MS-Excel^®,Text Format and SIGMA Medizin-Technik™ VAGUS^® compatible files. This is sometimes necessary because of special properties of the acquisition system or because of inverted recording electrodes.

HRV ver. 8.7,  LT-HRV ver. 3.6, OSAS ver. 1.4
SA-HRV ver. 3.7  and  SA-LTHRV ver 2.6
The following features were added:

• Compatibility with files acquired through the Dataquest^® A.R.T. data acquisition & analysis system made by DSI - Data Sciences International^®;
• Time scale in actual time of day or in time elapsed from the start of the recording for CODAS^® -WinDAQ, Dataquest^® A.R.T., Poly5/TMS32 and  SON^® -CED compatible files;
• Correction of the ECG zero line offset for AcqKnowledge^®, Binary-Single Channel, Cardiax^®, CODAS^®-WinDAQ, Dataquest^® A.R.T., European Data Format (EDF/EDF+/EDF90), MIT,  Poly5/TMS32, CED Cambridge Electronic Design^® SON and SIGMA Medizin-Technik™ VAGUS^®  compatible files. Pronounced deviation of the ECG signal above or below the zero line which makes R wave detection difficult/impossible may be corrected by using the Zero Line Offset.

LT-HRV ver. 3.5, SA-LTHRV ver. 2.5 and  OSAS ver. 1.3
The following features were added:

• Time scale in actual time of day or in time elapsed from the start of the recording (for EDF file format files, Mortara^®, MiniMitter^®, NerveExpress^® and Polar^® compatible files);

• Compatibility with Poly5/TMS32 Data Format (*.S00) processed by PortiLab^® (the TMS International^® acquisition software);
• Compatibility with additional MIT formats: MIT format 8, MIT format 16 and MIT format 61 (in addition to the already available MIT format 80 and MIT format 212).

HRV ver. 8.6 and  SA-HRV ver. 3.6
The following features were added:

• Time scale in actual time of day or in time elapsed from the start of the recording (for EDF file format files, Mortara^®, MiniMitter^®, NerveExpress^® and Polar^® compatible files);

• Compatibility with Poly5/TMS32 Data Format (*.S00) processed by PortiLab^® (the TMS International^® acquisition software);
• Compatibility with additional MIT formats: MIT format 8, MIT format 16 and MIT format 61 (in addition to the already available MIT format 80 and MIT format 212).

BRS ver. 5.0 and  SA-BRS ver. 3.0
The following features were added:

• Frequency domain analysis (FFT): Five new spectral windows were added (Blackman Exact, Blackman Harris, Chebyshev, Cosine Tappered, Kaiser);
• Direct moving from one mode of analysis to another by clicking the individual icons was added, the Back key is no longer there;
• New Print Preview windows design;
• Report templates for A4 and Letter paper format; 
• Reading of source files from a CD and saving of the resulting BRH files to a user-selectable hard disk directory; in the absence of a CD the BRH file is written to the source file directory (as before);
• Compatibility with PowerLab^® Chart text files;
• Compatibility with European Data Format (EDF, EDF90 and EDF+);
• Compatibility with Poly5/TMS32 Data Format (*.S00) processed by PortiLab^® (the TMS International^® acquisition software).

BPV ver. 8.1 and  SA-BPV ver. 3.1
The following features were added:

• Compatibility with Poly5/TMS32 Data Format (*.S00) processed by PortiLab^® (the TMS International^® acquisition software).

BPV ver. 8.0 and  SA-BPV ver. 3.0
The following features were added:

• Pulse Pressure (PP) Analysis in the time and frequency domains;
• Statistics: calculation of two additional parameters, MSD (the mean value of successive absolute differences) and SDASD (standard deviation of standard deviations of individual segments);
• Poincare analysis: calculation of two additional parameters, CSI (Cardiac Sympathetic Index) and CVI (Cardiac Vagal Index);
• Frequency domain analysis (FFT and AR): calculation of four additional parameters, CCVLF (Coefficient of Component Variance for LF), CCVHF (Coefficient of Component Variance for HF), LF/(LF+HF) ratio and HF/(LF+HF) ratio;
• Frequency domain analysis (FFT): Five new spectral windows were added (Blackman Exact, Blackman Harris, Chebyshev, Cosine Tappered, Kaiser);
• Direct moving from one mode of analysis to another by clicking the individual icons was added, the Back key is no longer there;
• New Print Preview windows design;
• Report templates for A4 and Letter paper format; 
• Reading of source files from a CD and saving of the resulting BRH files to a user-selectable hard disk directory; in the absence of a CD the BRH file is written to the source file directory (as before);
• Compatibility with PowerLab^® Chart text files;
• Compatibility with European Data Format (EDF, EDF90 and EDF+);
• Compatibility with PortiLab^® - Poly5/TMS32 Data Format (*.S00).

HRV ver. 8.5,  LT-HRV ver. 3.4,
SA-HRV ver. 3.5  and  SA-LTHRV ver 2.4
The following features were added:

• Compatible with Mortara^® (H-Scribe) holter files (*.TXT);
• New Print Preview windows design.

OSAS ver. 1.0.0

Nevrokard OSAS (Obstructive Sleep Apnea Screening), a new software tool designed for grading of probability of Sleep Apnea in patients, was released.

HRV ver. 8.4,  LT-HRV ver. 3.3,
SA-HRV ver. 3.4  and  SA-LTHRV ver 2.3
The following features were added:

• Compatible with Cardiac Science Burdick^® Vision (Premier) holter files (*.TXB);
• Calculation of two additional parameters, LF/(LF+HF) spectral power ratio and HF/(LF+HF) spectral power ratio in consecutive time segments.

HRV ver. 8.3,  LT-HRV ver. 3.2,
SA-HRV ver. 3.3  and  SA-LTHRV ver 2.2
The following features were added:

HRV ver. 8.2  and  SA-HRV ver. 3.2
The following features were added:

Poincare analysis - calculation of new additional parameters:

• dRRt (maximal heart rate variability, reflecting tonic heart rate control) in absolute and normalized units;
• dRRr (maximal response of RR interval, reflecting reflex heart rate control) in absolute and normalized units;
• dRRt/dRRr

HRV ver. 8.1,  LT-HRV ver. 3.1,
SA-HRV ver. 3.1  and  SA-LTHRV ver 2.1
The following features were added:

HRV ver. 8.0,  LT-HRV ver. 3.0,
SA-HRV ver. 3.0  and  SA-LTHRV ver 2.0
The following features were added:

LT-HRV ver. 2.20 and SA-LTHRV ver 1.20
The following features were added:

• An improved algorithm for R wave detection and digital filtering, reducing the time required for these procedures by about 12 times;
• R-R intervals are now in floating point format (xxx.xx miliseconds). This improved precision is particularly important for the recordings where sampling rates are higher than 1000 Hz;
• Compatibility with Nerve-Express^® files (*.HRV);

HRV ver. 7.20 and SA-HRV ver. 2.20
The following features were added:

• An improved algorithm for R wave detection and digital filtering, reducing the time required for these procedures by about 12 times;
• R-R intervals are now in floating point format (xxx.xx miliseconds). This improved precision is particularly important for the recordings where sampling rates are higher than 1000 Hz;
• Direct switching from one mode of analysis to another by clicking the individual icons was added, the Back key is no longer there;
• Poincare analysis: calculation of two additional parameters, CSI (Cardiac Sympathetic Index) and CVI (Cardiac Vagal Index);
• Frequency domain analysis (FFT and AR): calculation of two additional parameters, CCVLF (Coefficient of Component Variance for LF) and CCVHF (Coefficient of Component Variance for HF);
• Compatibility with Nerve-Express^® files (*.HRV).

LDDA ver. 6.01
The following features were added:

- Improved channel identification;
- Frequency domain analysis of up to 5Hz for Moor^® compatible files.

HRV ver. 7.10, LT-HRV ver. 2.10,
SA-HRV ver. 2.10 and SA-LTHRV ver 1.10
The following features were added:

HRV File Preparation
- The function of interim saving of long (e.g. Holter), partially edited ECG recordings was incorporated, thus making editing of 24-hr files in several separate sessions possible;
- Invert function for CED Cambridge Electronic Design^® SON (*.SMR) and SIGMA Medizin-Technik™ VAGUS^® (*.CVA) files;
- The option of a digital bandpass filter effectively eliminating 50/60Hz noise and baseline wandering due to patient restlessness was added.

- Compatibility with the Moor Instruments^® laser Doppler blood perfusion monitor;
- Thoroughly revised, simpler and more user-friendly software design;
- The Help utility was thoroughly revised.

Nevrokard™ SA-LTHRV is a new software package for Long-Term Heart Rate Variability Analysis in small animals. It features frequency domain analysis of up to 5Hz and a resampling rate of 10Hz. It is intended for use in animals having a considerably higher heart rate than human subjects.

The complementary File Preparation software for small animals is Nevrokard™ SA-HRVFP software.

Analysis
- The option to calculate spectral power also in the ULF - Ultra Low Frequency and in the VHF - Very High Frequency bands (in addition to the existing VLF, LF and HF bands) was added to the frequency domain analysis functions;
- Compatibility with the Finometer^® Format - Beatscope^® (*.OUT) files;
- Compatibility with the MiniAnalysis^® (*.ASC) files;
- Compatibility with the multicolumn text files;
- Invert function for multichannel binary files;
- The maximum allowed recording length for HRV or LT-HRV analysis is now 5 days (previously 26 hours) and for SA-HRV analysis 27 hours (previously 7 hours).

Nevrokard software is now available with dongles only. This will enable you to use the software you purchase on any computer, as long as the dongle is inserted into the appropriate USB port. Dongles are also available for owners of previous versions of the Nevrokard software. Please contact us for details: nevrokard@medistar.si.

BPV and SA-BPV Analysis
- The option to calculate spectral power also in the ULF - Ultra Low Frequency and in the VHF - Very High Frequency bands (in addition to the existing VLF, LF and HF bands) was added to the frequency domain analysis functions;
- Compatibility with the Finometer^® Format - Beatscope^® (*.OUT) files.

BRS Analysis  
- Compatibility with the Finometer^® Format - Beatscope^® (*.OUT) files.

 HRV File Preparation and NK File Preparation  
- Compatibility with CED Cambridge Electronic Design^® SON (*.SMR) files.

 HRV File Preparation and NK File Preparation  
- Compatibility with CED Cambridge Electronic Design^® SON (*.SMR) files.

HRV File Preparation
- Compatibility with SIGMA Medizin-Technik™ VAGUS^® (*.CVA) files;
- Compatibility with 12 or 16 bit data format Vitaport (*.VPD) files.

Analysis:
- Setting of Zoom limits in seconds or in hours:minutes:seconds format.

NK File Preparation
- Compatibility with SIGMA Medizin-Technik™ VAGUS^® (*.CVA) files;
- The option of continuous scrolling through the whole of an ECG/BP file;
- Increased flexibility of selection of the results (BRH) directory;
- Invert function for Biopac™ AcqKnowledge^® and DATAQ™ WinDAQ^® files.

BPV and BRS Analysis:
- Setting of Zoom limits in seconds;
- Calculation of intercept on the RRI axis added to the sequence method of BRS.

These new software packages featuring frequency domain analysis of up to 5Hz and a resampling rate of 10Hz were designed for use in small animals having a considerably higher heart rate than human subjects.

Nevrokard^® SA-HRV is complementary to the Nevrokard^® HRV File Preparation and Nevrokard^® HRV Analysis software designed for use in human subjects.

Nevrokard^® SA-BPV is complementary to the Nevrokard^® NK File Preparation and Nevrokard^® BPV Analysis software designed for use in human subjects.

Nevrokard^® SA-BRS is complementary to the Nevrokard^® NK File Preparation and Nevrokard^® BRS Analysis software designed for use in human subjects.

LT-HRV Analysis:
- The allowed recording length is now 1 min to 26 hr (previously from 10 min  to 26 hr);
- Time segment minimum is now 32 sec (previously 120 sec).

HRV File Preparation (HRV and LT-HRV):
- The option of continuous scrolling through the whole of an ECG file;
- Increased flexibility of selection of the RRI directory;
- Time scale in actual or elapsed time (for EDF file format).

HRV File Preparation (HRV and LT-HRV):
- Compatibility with MIT format files was added, providing compatibility with e.g. Forest Medical® Trillium Holter.
This format is also compatible with databases of electrocardiograms available in signal archives on the PhysioBank web page (MIT-BIH Database). Compatible are all records in MIT Format 80 and in MIT Format 212.

- A new method of upgrade download and installation. 
Upgrade Patches will (1) carry over your settings from the preceding version into the new one, and (2) reduce the size of the file to download by about a factor of 10.

HRV File Preparation (HRV and LT-HRV) and NK File Preparation (BPV and BRS):
- R Wave Editor has no longer any limitations whatsoever as far as the length of the file and the number of edited R waves is concerned.

LT-HRV Analysis:
- Improvements of print procedures. 

- A new method of software registration and copy protection of Nevrokard BPV and BRS software.

NK File Preparation:
- Compatibility with text format files with modifiable extensions was added, providing compatibility with e.g. Axon® format files (*.ABT).

BPV and BRS Analysis:
- Compatibility with multichannel text format files regardless of their extensions was added. This provides compatibility e.g. with the old MS-DOS Finapres® recordings.

HRV File Preparation
- invert function for Biopac™ AcqKnowledge^® and DATAQ™ WinDAQ^® files;
- EDF files: start date and start time can be written from the EDF file into the RRI file; the time format in the output file (elapsed time, actual time) can be selected.

HRV Analysis and LT-HRV Analysis
- compatibility with Del Mar Reynolds™ Holter files;
- compatibility with Mini Mitter™ Mini-Logger 2000 Series files.

This completely new software package featuring advanced graphics was designed to perform analysis of long-term segmented ECG (usually Holter-recorded) recordings (from 10 min. up to 26 hrs) in the time and frequency domains. It is complementary to the Nevrokard^® HRV Analysis software.

HRV File Preparation
- compatibility with Cardiax™ CSV ECG recordings. 

HRV Analysis
- compatibility with Zymed™ (Philips™) Holter RRI files;
- five new spectral windows were added (Blackman Exact, Blackman Harris, Chebyshev, Cosine Tappered, Kaiser);
- the Poincare Analysis algorithm was improved to make it 9 times faster.

- the re-sampling procedure was modified, so that the time required for preparation of long RRI files was shortened by a factor of 6.

Nevrokard HRV
- the software now uses the Polar® event markers;
- compatibility with the XLTEC® text files (*.TXT);
- the software now uses the event markers also in the File Preparation module (for Biopac™ AcqKnowledge® and DATAQ™ WinDAQ® files).

Nevrokard BPV and Nevrokard BRS
- compatibility with the GRASS™ Gamma® text files (*.TXT and *.RRI);
- the software now uses the event markers also in the File Preparation module (for Biopac™ AcqKnowlwdge® and DATAQ™ WinDAQ® files)

HRV File Preparation (HRV)
- The CODAS data format is now supported, the software is compatible with WinDAQ files (*.WDQ). Display of Event Markers is supported.
- The option to set an Offset value was added for EDF (European Data Format) files.

NKFP File Preparation (BPV and BRS)
- The CODAS data format is now supported, the software is compatible with WinDAQ files (*.WDQ). Display of Event Markers is supported.
- The design of user dialog was improved for ACQ (AcqKnowledge® data format) files.

- Improved BIOPAC AcqKnowledge® (*.ACQ) compatibility: the software now uses the ACQ event markers.

HRV File Preparation:
- Improved compatibility with European Data Format (*.EDF and *.REC) files was added:
(a) compatibility with EDF, EDF90 and EDF+ formats,
(b) both single channel and multiple channel recordings are now supported,
(c) two formats (Little Endian, Big Endian) are now available (Intel or Motorola processor),
(d) Invert function was added,
(e) option to rescale the signal was added.

NK File Preparation:
- Compatibility with BIOPAC AcqKnowledge® multichannel binary files (*.ACQ) was added.

HRV File Preparation:
- Compatibility with BIOPAC AcqKnowledge® multichannel binary files (*.ACQ) was added.

HRV Analysis:
- The software was made suitable for HRV analysis of fetal ECG.

HRV File Preparation and NK File Preparation:
- Compatibility with Data Translation® multichannel binary files (*.RAW)
was added.

File Preparation:
- Thoroughly revised, simpler and even more user-friendly software design.
- Two new compatible formats were added:
     (a) The program is now compatible with Portapres™-generated text files.
     (b) Two separate binary files containing the ECG and BP signals, respectively, can now be used with the software.
- Parameter settings for all compatible formats were extended.
- The R Wave Detection algorithm was improved.
- Direct access from the File Preparation module to the Nevrokard BPV Analysis, BRS Analysis and HRV Analysis modules was implemented.
- The Help utility was thoroughly revised.

BPV and BRS Analysis:
- Chart Editor enabling graph settings (axis, axis text, font selection, font size selection, graph position etc., in short everything required for print-out of the graph in a form required for publication or for a poster), was added to all modes of analysis.
- Compatibility with Microsoft Excel multicolumn files (*.CSV) was added.

Nevrokard HRV, ver. 6.22
The following features were added:

File Preparation:
- The software is now also compatible with files created by the Rozinn Holter system.

HRV File Preparation:
- A new compatible format was added. Program is now compatible with text files created by the Adinstruments Chart™ software.

HRV Analysis:
1. Compatibility with Microsoft Excel multicolumn files (*.CSV).
2. Extended parameter settings for text files.

HRV File Preparation:
- New, simple and user-friendly software design, enabling the operator to miss all technical aspects of the operation which are not required in her/his specific case.
- Two new compatible formats (Multi-Column Text Format, Embla Format) were added.
- The R Wave Detection algorithm was improved.
- Parameter settings for compatible formats were extended.
- Direct access from the HRV File Preparation to the HRV Analysis modules was implemented.
- The Help utility was thoroughly revised.

HRV Analysis:
- The program can now also be launched automatically by double-clicking an RRI file icon.

HRV Analysis:
- Data Editor - capability to edit RR interval files, even in cases where a recording, e.g. in the binary form, is not present (e.g. Polar(R) files or text RRI files).
- Compatibility with the tab delimited single column text format RRI files.

From now on all Nevrokard EVAL (evaluation) programs downloadable from our website will no longer 'die' after the expiration of the evaluation period, but will be converted into DEMO programs which will not be time-limited, but will have restricted capabilities (no PRINT and SAVE functions, a few numerical results will be unavailable). Even if your EVAL version stopped working at any time in the past, you can download the new EVAL version now and it will work as DEMO.
Nothing will change for registered users.

File Preparation: 

-	compatibility with single column text format, with or without a header. This format provides for compatibility with any data acquisition system capable of exporting the recorded file in the single column text format (e.g. the BIOPAC® system);
-	an additional option to select a sampling rate for the input binary file. The default rate is 500 Hz, but any sampling rate between 250 Hz and 10 kHz may be selected.

HPMA File Preparation:

-	compatibility with text format and CSV format recordings acquired by any acquisition system; Nevrokard BRS is therefore now compatible with files recordings by the PowerLab® data acquisition system manufactured by ADInstruments®;
-	a choice of sampling rates for binary, TXT and CSV files (default: 500 Hz).

File Preparation:
- compatibility with the Vitaport format,
- compatibility with the European Data Format,
- the option to choose the time axis either in seconds or in hours:minutes:seconds (for very long files),
- a choice of sampling rates (500 Hz or 512 Hz).

HRV Analysis:
- compatibility with single-column TXT files,
- the option to choose the time axis either in seconds or in hours:minutes:seconds,
- Chart Editor enabling graph settings (axis, axis text, font selection, font size selection, graph position etc., in short everything required for print-out of the graph in a form required for publication or for a poster), added to all modes of analysis.