EEGs were collected using Natus XLTEK (Natus Medical Inc., Pleasanton, CA, USA) systems by registered EEG technicians with subjects laying supine in a low-lit, quiet room. Subjects had 19 silver-silver chloride scalp electrodes placed according to the International 10–20 System with standard reference/ground placement, impedance <5kOhm sampled at 256 Hz, and low frequency filter (LFF)=1Hz, high frequency filter (HFF)=70Hz, and with a 60Hz notch filter. Additional eye, ear, and electrocardiogram leads were also collected. EEG was acquired as continuous signal for approximately 30 minutes with subjects resting comfortably with their eyes closed in a quiet room. EEG was acquired from Fp1, Fp2, Fz, F3, F4, F7, F8, Cz, C3, C4, Pz, P3, P4, T3, T4, T5, T6, O1 and O2.
Xltek
Manufactured by Natus
Sourced in United States, Canada
The XLTEK is a versatile lab equipment product designed for a range of clinical and research applications. It provides reliable data acquisition and analysis capabilities to support various diagnostic and monitoring tasks. The core function of the XLTEK is to capture, process, and display physiological signals with precision and accuracy.
Automatically generated - may contain errors
Lab products found in correlation
26 protocols using xltek
1
Resting-State EEG Acquisition Protocol
2
Ear-EEG Electrodes for Auditory Recordings
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
The ear plugs used in this study were shaped very similarly to those used in [18 (link)], with the difference that the plugs here were made from soft silicone, and the electrodes were solid silver buttons soldered to copper wires. See Fig. 1 for an example of a left-ear plug. Before insertion, the outer ears were cleaned using skin preparation gel (NuPrep, Weaver and Company, USA) and electrode gel (Ten20, Weaver and Company, USA) was applied to the electrodes. Ear-EEG electrodes were ELA, ELB, ELE, ELI, ELG, ELK, ERA, ERB, ERE, ERI, ERG, ERK, as defined in [19 ].![]()
Example left-ear ear plug with silver electrodes.
3
Continuous Video EEG Monitoring in Patients
4
EEG Data Acquisition with Video Synchronization
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
The EEG data were recorded using 37 electrodes (Nihon Kohden (Japan) silver‐collodion disk electrodes, 10 mm) placed via an enhanced 10–20 arrangement, using the Natus XLTEK (Oakville, Canada) system. EEG was recorded with synchronized video. The typical interelectrode spacing was 3–4 cm and impedances were maintained ≤5 kΩ. Bipolar referencing was used, with a FCz reference and AFz ground electrode. Bilateral electrooculography (two leads) and electrocardiography were also recorded. Signals were amplified and digitized at 250 Hz using an antialiasing high‐pass filter with a corner frequency at 0.4 times the digitization rate.
5
Intracranial EEG Recording of Epilepsy Patients
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
Study participants Columbia University consisted of four patients (two female, two male) with pharmacoresistant focal epilepsy who underwent long-term intracranial EEG studies to help identify the epileptogenic zone for subsequent surgical removal. All in vivo experiments were approved by the internal review board committees at Columbia University. Prior to obtaining and using data for this study, informed consent was obtained. The patients’ surgeries and treatment plans were not directed by or altered as a result of these studies.
A 96-channel, 4 × 4 mm microelectrode array (Utah array, Blackrock Microsystems) was implanted along with subdural electrodes with the goal of recording from SOZs. Signals from the microelectrode array were acquired continuously at 30 kHz per channel (0.3 Hz to 7.5 kHz bandpass; 16-bit precision; range, ±8 mV). The reference was epidural. ECoG signals were acquired using a standard clinical video EEG system (Xltek, Natus Medical) with a bandwidth of 0.5-500 Hz (Fig. 1B ).
The HG data shown inFigure 8C were filtered off-line using a second-order Butterworth band filter of 80-150 Hz. Up to three seizures in each patient were selected for detailed analysis, to avoid biasing the dataset from the patients in whom many seizures were recorded (Table 2 ). Channels and time periods including artifacts were excluded.
A 96-channel, 4 × 4 mm microelectrode array (Utah array, Blackrock Microsystems) was implanted along with subdural electrodes with the goal of recording from SOZs. Signals from the microelectrode array were acquired continuously at 30 kHz per channel (0.3 Hz to 7.5 kHz bandpass; 16-bit precision; range, ±8 mV). The reference was epidural. ECoG signals were acquired using a standard clinical video EEG system (Xltek, Natus Medical) with a bandwidth of 0.5-500 Hz (
The HG data shown in
6
Synchronized Speech and ECoG Recording
7
Frontotemporal EEG Monitoring Protocol
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
Electrode placement followed the international 10–20 system but was limited to five frontotemporal EEG leads (Fp1, Fp2, F7, F8, Fpz, using Fpz as the reference electrode) and a ground electrode. EEG was recorded using a digital video EEG bedside monitoring system (Xltek; Natus Medical, Oakville, ON, Canada; low-pass filter = 70 Hz, high-pass filter = 1 Hz, sampling rate = 200 Hz) (Claassen et al., 2016 (link)). Electrodes were routinely checked to keep impedances <5 kΩ and to ensure high signal quality.
8
Intracranial Electrode Implantation for LFP Recording
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
LFPs were recorded using 16 and 7 (subjects 1 and 2, respectively) intracerebral multiple contact Microdeep® platinum-iridium Depth Electrodes (Dixi Medical, Besançon, France; diameter: 0.8 mm; 5 to 18 contacts, contact length: 2 mm, distance between contacts: 1.5 mm) that were stereotactically implanted using frameless stereotaxy, neuronavigation assisted, and intraoperative CT-guided O-Arm and the Vertek articulated passive arm. In total, 175, 93 and 146 contacts were implanted and recorded in subjects 1-3, respectively (see Tables 1 andS2 for details and Fig. 1B for an ex-6 ample of the implantation scheme of subject 1). The decision to implant, the selection of the electrode targets and the implantation duration were entirely made on clinical grounds using the standard procedure (Lachaux et al., 2003; Cardinale et al., 2013) . All recordings were obtained using a standard clinical EEG system (XLTEK, subsidiary of Natus Medical) with a 2048 Hz sampling rate. All signals were referenced to the scalp electrode CPz.
Individual pre-and post-implant T1-weighted MR scans were used to determine contact localizations. MR scans were obtained with a 1.5 T unit (Magnetom Aera 1.5T; Siemens Medical Systems, Erlangen, Germany) with a specific protocol that included the following sequence: sagittal T1weighted gradient recalled (repetition time [TR]
Individual pre-and post-implant T1-weighted MR scans were used to determine contact localizations. MR scans were obtained with a 1.5 T unit (Magnetom Aera 1.5T; Siemens Medical Systems, Erlangen, Germany) with a specific protocol that included the following sequence: sagittal T1weighted gradient recalled (repetition time [TR]
9
Comprehensive EEG Analysis in Critical Care
10
Multimodal Neural Signal Acquisition Protocol
About PubCompare
Our mission is to provide scientists with the largest repository of trustworthy protocols and intelligent analytical tools, thereby offering them extensive information to design robust protocols aimed at minimizing the risk of failures.
We believe that the most crucial aspect is to grant scientists access to a wide range of reliable sources and new useful tools that surpass human capabilities.
However, we trust in allowing scientists to determine how to construct their own protocols based on this information, as they are the experts in their field.
Ready to get started?
Sign up for free.
Registration takes 20 seconds.
Available from any computer
No download required
Revolutionizing how scientists
search and build protocols!