Quattro-Pulse stimulation – a new patterned rTMS for inducing LTP/LTD-like plasticity:

A new technology platform enables the combination of ultra-fast QPS (Quattro-Pulse Stimulation) and online TMS-EEG in one device for the first time.

This QPS device can be driven on a standard 1-phase power supply and can apply biphasic Quadri-Pulses, Theta Bursts and rTMS. The selectable burst sequencing allow ultra-high frequency bursts with up to 700Hz.

  • ultra-high speed bursts with up to 666Hz
  • up to 4 pulses in a burst package
  • same pulse lengths in all stimulation modes and with all coils
  • no power roll-of within the bursts
  • biphasic rTMS, Theta Bursts and QPS protocols within one device
  • online-EEG feasible
  • 1-phase standard power supply
  • ISI [ms] 1.5, 5, 50
  • IBI [ms] 200, 1000, 5000
Maximal frequency 100 Hz
Minimal frequency 0.1 Hz
Minimal ISI10 ms
ISI minimal change value1 ms
Frequency minimal change value 0.1 Hz
Maximal frequency at 100% intensity 30 Hz
Maximal Intensity 100 % (30 Hz), 80 % (50 Hz), 70% (100 Hz) - dependig on power supply
Stimulation parameters
Magnetic induction up to 4 tesla (depending on coil)
Maximum pulse power 160 Joule
Pulse shapes Full sine-wave
Current direction in the coil Invertible on the equipment
Rise time of the stimulation pulse 80 μs (PA)
Pulse duration 160 μs
Input/Output interface
Trigger input BNC-connector (TTL pulse, active high)
Trigger output BNC-connector (TTL pulse, active high)
External interface 8 pole DIN connector (Single pulse, repetitive mode, TBS, ramp, custom stimulation protocols possible)
Synchronisation BNC-connector
”Made in Germany“ quality
Number of discharges at 100% intensity 2000000
Electrical safety Protection class 1, Type BF
Hardware classification to MDD 93/42/EEC class IIa
Hardware certification EC type examination
Operating Parameters
Power supply voltage 220/230 V~, 50 Hz, 120 V~, 60 Hz with PowerUNIT
Power consumption 50 VA in standby mode, 800 VA nominal rating, 2000 VA
Operating temperature 0 ⁰C to +30 ⁰C
Dimensions (width, height, depth)490 x 260 x 600 mm
Weight 38 kg
Selectable QPS protocols:
ISI [ms]
ITI [ms]2001000500020010005000200100050005000
ITI [s]0.2150.2150.2155
Frequency [s]510.2510.2510.20.2
No. of Trains360360360360360360360360360360
No. of Pulses1440144014401440144014401440144014401440
Total Duration [s]7236018007236018007236018001800
Total Duration [min]1,26301,26301,263030

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