In this tutorial you will learn how to backup all customizable files or export them to another computer.   1. Export/Import Session Data:   The export-function implemented in the BioTrace Client and Session Database is the best way to export session data. You could export to raw data by copying it from the BioTrace install-folder. The problem with this method…

This tutorial will guide you throughout the entire steps of connecting your NeXus device to your computer or notebook using the integrated Bluetooth stack of windows.Insert the Bluetooth-dongle into the USB-interface of your computer. You should now see the Bluetooth-icon in the bottom right corner of the windows task-bar (see figure 5).If you are using an internal Bluetooth-dongle you may…

BioTrace enables you to give feedback by means of a puzzle. This puzzle uses a couple of default pictures, preinstalled in BioTrace. This tutorial will teach you to add your own pictures to BioTrace, creating your very own Puzzles.   Navigate to your BioTrace install-directory (for example: "C:\BioTrace\").Now, open the folder 'Games' (so, "C:\BioTrace\Games\"). This should look similar to the…

  Calibrating the Accelerometer is fairly easy. The accelerometer consists of 3 axis. Each of which have a certain direction. The direction of movement, determines the polarity of the force (Gravitational Force), exerted on the sensor.   Figure 1: Connecting the 3 leads of the Accelerometer to the inputs E, F, and G.   In BioTrace we now have to…

  As you know, the NeXus has several inputs. Most likely, you only know about a single input 'layout';   The Default Inputs of the NeXus 10:   Figure 1: The inputs of the 'Default.channels' channelset   What you might not know is that BioTrace offers the possibility to 'reconfigure' the input layout of your NeXus. This means you can…

  You can find info on EDF files on ‘http://www.edfplus.info/’. Polyman Viewer: (http://www.edfplus.info/downloads/software/polyman.zip)   Figuur 1: Go to 'file', and click 'Export Session Data'   Figuur 2: Enter a name for the EDF file and 'Save'   Figuur 3: Open the EDF file with Polyman Viewer   Figuur 4: Select all channels, including the ANNOTATIONS, and add these to the…

Depending on your computer’s hardware and software you might from time to time experience problems in video-files which are not supported by your monitor(s). This problem is fairly common in the use of a dual monitor-setup. The problem is most likely to be solved by using the hardware acceleration of your computer’s hardware.   Background Hardware acceleration is a function…

  Your HEG sensor has to NeXus 10 compatible connectors. Connect the blue connector to input E (input C for NX-4, input 30 for NX-32), and the red connector to input F (input D for NX-4, input 31 for NX-32). Place the Headband on your client's scalp, as displayed in figure 1.   Figure 1: Connect your HEG sensor to…

  Figure 1: Start off by making this kind of Powerpoint object, containing the stroop test words     Figure 2: Change the background-color to your preference (The DEMO is set to black)     Figure 3: Also change the object-color to your preference (The DEMO is set to black)     Figure 4: Right mouse click on the side…

  When working with BioTrace you may have experienced an error concerning a certain regdll-file (see figure 1).   Figure 1: REGDLL.EXE error   This error occurs when BioTrace is installed in various locations on your hard drive. The solution is rather easy for most systems. Navigate to your BioTrace install folder and locate the 'regdll'-file (see figure 2).  …

  In EMG measurements you might, from time to time, experience ECG/EKG artifacts. These artifacts are present due to the fact that a heartbeat causes a relatively high electric field in the human body. Depending on the location of the measurement, this is present in an EMG measurement or not. For instance, when measuring the activity of the M. Rectus…

BioTrace is preinstalled with few audio files, which you can use for feedback purposes.It is however, possible to import your own audio files into BioTrace. In this tutorial, we will go through the steps of ripping (copying) the various audio tracks off a retail CD.   For demonstration purposes, we will use Windows Media Player, as this is available on…

With the NeXus Trigger Interface (NTI), we can import triggers from an E-prime project. The triggers are then synchronized with the physiological data recorded with the NeXus. The data, complete with synchronized triggers are then sent to BioTrace. The NTI is connected to E-prime, using the computer's Serial port. The RS-232 sensor is connected to the digital input of the…

The following settings will help you to create a SCP channel using the unipolar inputs of your NeXus 32, or 16

With your NeXus-32F you have the possibility to use the NeXus SCP cable (also compatible with the NX-4 and NX-10). This tutorial will explain the basic principles of the SCP recording in BioTrace.   We will start of by opening the SCP Clinician screen, you will find in the Screen Category 'SCP' (see figure 1).   Figure 1: The SCP…

Electrooculography (EOG), can be used for a wide variety of applications. We will focus our attention on EOG as a means of Artifact Control.   The recording of EOG is a quite basic measurement of the shift in electrical potential around the eye, caused by movement of the eye.EOG artifact control can be very useful when recording Slow Cortical Potentials…

BioTrace allows you to do real-time feedback! However, as you probably already know, you can also collect and analyze the data! As with any measurement, you will eventually experience interference in your measurements, causing artifacts in your data! For exactly this reason, the developers of BioTrace have provided you with several possibilities to 'mark' certain pieces of data as ARTIFACT,…

Mind Media BV now supplies a 'Quick Fix Cable' for the NeXus EEG Cap! If you're experiencing a defect in a single channel, and you cannot afford to lose precious time to repair, you can delay your cap's repair by using the Quick Fix Cable. This short term solution offers you the possibility to quickly apply a 'bypass' cable to…

See the effect of horizontal and vertical eye-movement on the VEOG value; This also has an effect on the actual SCP value, measured at Cz!

Respiration can contain artifacts, which keep the software from detecting the actual peak of your respiratory signal.   If you take a look at the signal in figure 1, you will see a clear 'mistake' in RSP-rate detection.   Figure 1: 'Artifacts' causing erroneous peak-detection in RSP signal   Using the Threshold Dampening function in the channelset, we can 'adjust'…