EEG-studies at the patient's whereabouts

Conducted in a wireless mode in hospital rooms, at home, in the ambulance car, under field conditions. All equipment required for studies and PC can be transported kept in one shoulder bag.

The program ensures high-quality recording of 21 EEG/EP derivations and constant potentials that characterizes extra-low brain activity, and also ECG, EMG, EOG and signals from respiration recursion and body position sensors.

Effective visual analyseis and quantitative methods of EEG/EP processing allow conducting rigorous and full neurophysiologic diagnostics of full value.

Neuromonitoring

Compactness of the patient's block, reliable back up data storage on a Flash Memory Card and wireless transfer of information to the PC guarantee noise immunity and effective use of the Electroencephalograph as a neuromonitor under the conditions necessary for treatment of the patient.

Native neurophysiological data, current values and trends of monitored signals are conveniently represented on ergonomic LCD which can be distanced from the recording-place (up to 6 m) for the purpose of effective neuromonitoring and convenience of manipulation and staff care for the patient.

Long-term EEG-videomonitoring

The "Gold Standard" for differential diagnostic of epilepsy type is ensured by the possibilities of ambulatory long-term EEG-monitoring in patient-friendly conditions and long-term EEG recording synchronized with video picture in hospital rooms or at home.

EEG videomonitoring sets "Encephalan - video" (stationary or portable) ensures accurate synchronization of EEG, video- and audio data, cues and markers, and includes tools for quick searching of epiphenomena, video or EEG-data fragments, their autoview at different speeds (speeded up, slowed-down review, page scrolling and freeze-frame) and documenting.
Special option allows making video-clip or CD/DVD disk with study data.

Safe data storage is ensured both during the study conducting and on completion of the study.

Ambulatory EEG-monitoring

There is an original technology that provides EEG-monitoring (up to 72 h) combined with periodic functional EEG-studies (phono- and photostimulation, hyperventilation) for differential diagnostics and for pharmacotherapy control (the dynamics of threshold of readiness for convulsions).

Polysomnographic studies

The use of electroencephalograph along with optional wireless devices of breath parameter recording, SpO2, patient body location sensors, snore sensors, moving activity sensors and the software "Encephalan-PSG" allow carrying out full PSG studies.

The results of PSG-study are hypnogram (made in automatic or speeded-up mode), report on sleep statistics, diagram of sleep stages and the description of a study with medical decision.

detales

Scientific research

Patient's blocks (APB-21, APB-10), wireless sensors and auxiliary units can be combined into a wireless network (piconet).
Such unique opportunity allows the scientist configuring the necessary set of electrophysiological signals to be recorded for carrying out the scientific experiment under the conditions maximum approximated to the natural activity of a test person or a test group.

Autonomous patient's block APB-21

Ensures high quality wireless data transfer (via Bluetooth), data recording (EEG and other electrophysiological signals) to the portable computer of the Electroencephalograph and long-term storage onto internal Flash Memory Card (micro SD) and wireless connection to addi-tional sensors and devices.

Adapter EEG-19

22 electrodes (depth, adhesive cup or cortical type) with touchproof jacks can be connected to the patient's block APB-21 with the help of adapter

Autonomous patient's block APB-10

Basic device of an electroencephalograph-recorder "Encephalan-EEGR-19/26" "Mini" modification.

Meant mainly for studies with few EEG-channels (2 or 9 - EEG, max number of channels 11) -
polysomnography, EEG studies for children, cerebral functions monitoring etc.

2 GB memory card capacity ensures more than 48h of continuous record.
Interface of connection to PC, wireless record modules and stimulators are Bluetooth.
Block weight - less than 200 g.

Wireless stimulation block

Compact wireless stimulation control block ensures conducting of functional tests for phono-, photostimulation at the patient's whereabouts.

The block has autonomous battery power supply, control is performed from the doctor's PC via telemetric channel. There is embedded light-emitting diode matrix for standard photostimulation in the block.

"Encephalan-ES" set

Original removable electrode systems (for grown-ups and children) consisted of specially designed tubular (AgChl) electrodes (Click-tube™) and of a set of fixative elastic caps (8 sizes) ensure comfortable for a patient long-term EEG-studies and high quality of signal recording.

Digital event marker

Intended for keeping patient's journal, saving time event marks and voice comments on the patient's state during long-term ambulatory EEG-monitoring. The information is transferred after a study from a marker to the doctor's PC (USB interface) and synchronized with EEG-data for further analysis.

Wireless accessoiries

Wireless electrostimulator

Meant for somatosensory evoked potentials study in diagnostics of pathways, pain and temperature sensitivity.

Wireless pulse oximeter adapter

Ensures the connection of SpO2 sensors (for adults, children and or ear clips)., This capability allows which ensures obtaining the necessary data for full PSG -studies and neuronmonitoring of full value.

Wireless sensor of motion activity

Meant for limbs motion activity registration in "restless legs syndrome" diagnostics , EEG - videomonitoring and PSG - studies.

Wireless module of respiration sensors

Meant for respiration parameters recording during the sleep studies or continuous monitoring. Allows connecting up to 4 sensors at a time: 2 respiratory (abdominal and thoracic), snore sensor and oral-nasal respiratory sensor.

Neuromonitoring / Cerebral functions monitoring

Ensures continuous monitoring of EEG and other vital physiological indices in neonatology, intensive therapy and neuroreanimation departments for the control of the brain functional state, for making prognosis on neurological fate of perinatal asphyxia, extravasations, hypoxic disorders, deviant brain activity detection.

The results are presented to a doctor in the form of amplitude-integrated EEG (aEEG), compressed spectrum (colour scaling) and trends of the spectroscopic indices.

DC/Slowly changing potential study

Used for determination of cerebral energy exchange intensity characteristics (metabolic alterations dynamics) in the process of study, including continuous.

Synchronized record of spontaneous EEG and DC/Slowly changing potential study (constant potential level) is performed. Signals can be displayed in the form of a random layout of referential wiring reconstruction and topographic mapping - neuroenergymapping (NEM). Some scientists consider the NEM - method an electrophysiological analogue to the Positron emission tomography according to its medical significance.

The study of evoked potentials

The results of EP studies as addition to the EEG-results help the doctor on the bases of quantitative indices to estimate functional state of a cerebrum, localization and severity of abnormalities, also help to detect abnormality of central nonspecific and nociceptive afferentation, possible cognitive disorders etc.

Videostimulation study of evoked potentials (Audiovisual stimulator)

To investigate perception mechanism and to detect individually important information multimodal stimuli are presented to a test person while analyzing EEG/EP.
The important peculiarity is subsensory stimuli presentation mode with specified masking stimuli that help to distract attention of a person being tested onto other images concealing the true purpose of studies and the content of subsensory stimuli used.
EEG/EP recording and all stimuli and markers are absolutely synchronized (synchronization is ensured with the help of special sensor or net-operated).

To fix reaction (pressing a button) of a person being tested to various stimuli, the special 5-button console is used.

3D Localization of Intracerebral Sources

Designed for detecting focal manifestations of seats of pathological cerebral activity or functional seats using special EEG and EP analysis. 3D localization is used as an additional method, especially in cases when the seat of pathological cerebral activity has no obvious morphological changes and cannot be recorded with the help of the CT and MRI.
The results of the analysis are displayed in the form of the "cloud" of distribution of equivalent dipoles on the cerebrum cutoffs, and in the form of amplitude topographic maps of initial and reconstructed EEG.

Combined signal analysis

Used for scientific research in the case when a great number of different physiological signals (e.g. all signals obtained from APB-21, APB-10, adapters connected to them, and also from wireless sensors) has to be processed.
For convenience of visual analysis of multi-type physiological signals an original method of phased cardio-cyclic presentation and stage-by-stage dynamics is used (bound to functional tests, optional record fragments, or defined time periods with specified level of time compression).
Such compressed way of presentation in single time scale obviously shows the correlation between signals that characterizes different systems of an organism.

Heart rate analysis

Designed for autonomic nervous system (ANS) state assessment on basis of heart rate variability analysis.
It can be additionally used for analysis of the dynamic of the patient's state using ECG recorded in the process of long-term EEG-studies as a result of pharmacotherapy, physical and psycho-emotional stresses, and also for controlling the treatment effectiveness. It allows detecting the dysfunctions of ANS during sleep and wakefulness.