EEG recording. Impedance measurement mode (control of electrode setting quality).

For each electrode, including ground one, impedance value (electrical resistance between electrode and skin) is shown in the list and is marked by the color on the scheme. Red color indicates high impedance (the electrode is set bad), yellow is the middle one (the electrode is set satisfactory), green is the low one (the electrode is set well).

EEG recording. Stimulators programming.

Neuron-Spectrum EEG photic and auditory stimulators can operate both in manual and program modes. In the program mode they are controlled by stimulation commands and pauses (EEG recording without stimulation). The commands define the parameters of stimulation (frequency, intensity, volume, duration).

Creation and editing of EEG montages.

EEG can be displayed in any montage chosen by the user (monopolar, bipolar and mixed). With the help of this mode it is possible to create arbitrary montages. It can be used for changing of EEG traces displaying in the process of recording and reviewing.

Split screen mode allows viewing two EEG fragments simultaneously (for example two different functional tests).

This mode is very useful for visual comparison of different EEG fragments both in process of recording and reviewing.

Amplitude analysis of EEG fragment.

The left marker is set at the beginning of the analyzed fragment. From this point of time the amplitude topographic brain maps are depicted in every 0.05 seconds (the interval is set by the user). 25 maps are displayed simultaneously. The amplitude can be measured from the isoline or the reference point.

Spectral analysis of EEG fragment.

The spectral analysis with the use of Fast Fourier Transform is carried out in the marked EEG fragment. In the analysis window, graphs of spectrum power for each derivation are displayed. The standard EEG frequency ranges (delta, theta, alpha and beta) are marked by the different colors.

Preview of EEG fragment before printing.

EEG can be printed on the jet or laser printer using the plain paper.

Results of epileptiform activity analysis (automatic search of spikes and sharp waves).

Epiactivity analysis can be conducted in a whole record, separate functional test or EEG fragment. The fragments with detected spikes and sharp waves are marked by the color. In the result window tables and epiactivity brain maps are shown.

EEG analysis results are displayed as brain maps and bar charts.

Neuron-Spectrum software allows carrying out of amplitude, spectral, periodometrical, correlative, and coherent EEG analysis. The analysis results can be represented as tables, graphs, bar charts or brain maps.

EEG coherent analysis results.

To the left are the coherency maps, and to the right are the coherency function graphs for each derivation pair. By moving the marker, user can specify the instantaneous frequency value. Before the coherent analysis the user is offered to choose the derivation pairs between which the coherency parameters will be calculated. The lines color on the maps is defined by the values of one of the coherency parameters (user selected). The closer is the color of line to the red one, the higher is the value of the corresponding parameter (the higher is the coherency). As the parameters, the value of the coherency on the instantaneous frequency (in the point ticked by the marker) or in the frequency ranges can serve. As a frequency range it is possible to choose either one of the standard ranges (delta, teta, alpha and beta) or total range of EEG.

EEG checkup report.

In Neuron-Spectrum software the report is generated automatically basing on the results of EEG mathematical analysis. The report can be edited in the built-in or MS Word editor. The report contains the textual description of background EEG and the description of functional tests responses. If it is necessary, it can be supplemented with EEG fragments, tables, graphs and brain maps.

Review and analysis of multi-channel EP.

The software module Neuron-Spectrum-LEP allows providing the recording and analysis of visual (flash and reversal pattern), auditory and cognitive (Р300, MNM, CNV) long-latency evoked potentials with their brain mapping. To the right the averaged EP with the set component markers are displayed. To the left the brain maps of EP amplitude for each EP component are represented.

Neuron-Spectrum-2 Delivery Set 

·                   EEG unit with a stand

·                   LED photic stimulator with a stand

·                   Set of accessories for EEG recording:

o                            Bridge/cup EEG electrode – 20 pcs.

o                            Ear EEG electrode – 3 pcs.

o                            EEG cable for bridge/ear EEG electrode – 20 pcs.

o                            EEG helmet – 3 pcs. (big, medium, small)

·                   CD with software

·                   User and technical manuals

·                   Transportation bag

Extra Delivery Set 

·                   Auditory stimulator

·                   Needle electrode for intraoperative monitoring – 24 pcs.

·                   BrainLoc – 3-D dipole localization of pathologic activity sources software

·                   Neuron-Spectrum-Video – long-term video monitoring system

·                   Neuron-Spectrum-LEP – software for long-latency EP recording and mapping

·                   Poly-Spectrum-Rhythm – software for vegetative nervous system study with the set of equipment for cardiovascular reflex tests