Thermoception Analyzer intercross-210
High accuracy thermoregulation system with the Peltier element.
3 measurement functions for the evaluation of somatic sensation.
■Thermal threshold measurement■
It measures the human thermal comfort threshold using the heat flux as an indicator.
It independently evaluates the warm and cold sensation in a short time.
It realizes a low speed thermoregulation of 0.1℃/sec by high accuracy.
■Threshold for pain sensation measurement■
It measures threshold of pain by accurate control of repeated fluctuation of temperature.
■Pain stimulation measurement■
It stimulates skin in thermostat rate of up to 15 ℃ /sec.
It has high- speed temperature control system to avoid overshoot.
The stimulation measurement is possible inside of MRI (MRI unit is option.)
■Synchronization input unit
External synchronizing input 6ch.
1kHz sampling.
Brain waves, an electrocardiogram and blood flow sweat rate are measured with temperature stimulation by synchronization.
■Analyze a threshold for warm and cold sense.
It independently evaluates the absolute value of the human thermal comfort threshold
using the heat flux between device probe and skin as index of measurement.
| Measurement Screen | 25mm square probe with heat fulx |
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Measurement protocol
*Rationale for setting heat flux as an index of measurement.
Compared with temperature, heat flux is a more accurate reflection of thermal energy moving between substances.
For example, when we compare a metal and piece of wood on our skin, we feel that the metal is colder,
even if both materials have exactly same temperature. This means that the perception of temperature is related to
the flow of thermal energy between objects and skin, and not the actual temperature itself.
By setting the heat flux as an indicator, this enables the evaluation of absolute values which is not possible with a temperature index.
■ Threshold for pain sensation
It is high- precise control system at the time of awareness with few overshoot.
It sifts or reverses to the next stimulation smoothly.
Measure a threshold according to the difference of temperature.
| Measurement Screen | 10mm square water-cooled probe |
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■ Stimulation of pain sensation
Probe temperature changes according to a setting temperature program.
<Setting>
| 10mm square water-cooled probe |
 |
・Range of stimulating temperature: -10℃～50℃(limited by a limiter function)
・Thermoregulation speed: 0.1～15℃/sec
・Thermoregulation sequence segment number: Maximum 100 segments
【For Human】
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Air-cooled 25ｍｍ square probe for heat flux |  |
10ｍｍ square probe |
  |
Probe for intraoral |   |
10ｍｍ square probe for face |
【For Animal】
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1ｍｍφ |   |
3ｍｍ square |
■intercross-210
| Temperature sensor |
-60℃~60℃ |
| Heat flux sensor |
±10000W/m2 |
| Range for temperature control |
-10℃～50℃ |
| Thermoregulation speed for probe |
0.1 ℃/sec ~15℃/sec |
| Sampling frequency |
1Hz 10Hz 100Hz 500Hz 512Hz 1000Hz 1024Hz (possible alternative) |
| Input channel 8ch |
1ch: Probe temperature 2ch: Heat flux of probe3ch～8ch: Option |
| Input range | ±10V |
| Thermoregulation method | Peltier element |
| Output | USB |
| Power supply | AC100V 50/60Hz |
| Configuration | 350mm×300mm×70mm |
| Weight | 5kg |
■ Attachment
| Power cable |
intercross-210-01 | |
| Event switch | intercross-210-02 | |
| USB cable | intercross-210-04 | |
■ Option
| 4 analog input cable set |
intercross-210-03 | |
| Pump unit for water-cooled probe | intercross-210-06 | |
■ Software
| Measuring software for threshold of warm and cold sense : intercross-210-51 |
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| <Measurement condition setting items> |
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| Thermoregulation mode |
Temperature mode, Heat flux mode, Double-blind mode |
| Starting temperature designation |
Temperature or Heat flux |
| Thermoregulation speed |
0.1℃/sec 0.3℃/sec 0.5℃/sec (Select) |
| Thermoregulation direction |
Heating or Cooling |
| Result list |
Starting temperature, Awareness temperature, |
| Awareness temperature difference, | |
| Awareness time, Starting heat flux, | |
| Awareness heat flux, | |
| Awareness heat flux difference | |
| Integral value of the heat flux | |
| The number of the display channel | Maximum 8 channel |
| Program for stimulation of pain sensation : intercross-210-52 | |
| <Thermoregulation setting item> |
|
| A basement temperature or basement heat flux |
(Designation optionally) |
| Thermoregulation speed | 0.1℃/sec~5℃/sec (Designation optionally) |
| The number of thermoregulation repetition |
1 ~20times (Designation optionally) |
| The initial thermoregulation direction |
Heating or Cooling (Select) |
| Result list |
Skin temperature at the time of awareness |
| Average value of skin temperature at the time of awareness | |
| Standard deviation value of skin temperature at the time of awareness | |
| Maximum value of skin temperature at the time of awareness | |
| Minimum value of skin temperature at the time of awarenes | |
| The number of the display channel | Maximum 8 channel |
■ Configuration of intercross-210 system
| Threshold for warm and cold sense | Stimulation of pain | Threshold for pain sense | |
| intercross-210 | |||
| Probe | 25mmsquare water-cooled with heat flux |
10mm square Water-cooled |
30mmφ With bloodstream hole |
| software |
intercross-210-51 | intercross-210-53 |
intercross-210-52 |
| other |
– | Pump unit for water-cooled probe | Pump unit for water-cooled probe |
Main literature list
| Accuracy and reliability of threshold measurement in the chin using heat flux technique | |
| Teppei Kawano,Yuhji Kabasawa,Suga Ashikawa,Yuriko Sato,Shigeharu Jinno,Ken Omura | OOOOE Vol.108,No.4 October 2009 |
| Measuring heat flux and amount of heat as indexes of cold pain threshold | |
| Kazuhiro Shimo,Shigeyuki Suzuki,Takahiro Ushida | PAIN RESEARCH 27(2012)17-26 |
| Cutaneous Warm and Cool Sensation Thresholds and the Inter-threshold Zone in Malaysian and Japanese Males | |
| Joo-Young Lee,Mohamed Saat,Chinmei Chou,Nobuko Hashiguchi,Titis Wijayanto,Hitoshi Wakabayashi,Yutaka Toshihara | Journal of Thermal Biology 2009 |
| A new evaluation method for neurosensory disturbance in the chin of patients undergoing mandibular sagittal split ramus osteotomy:an application of the heat flux technique | |
| Yuhji Kabasawa,Kiyoshi Harada,Shigeharu Jinno,Yuriko Satoh,Yutaka Maruoka,Ken Omura | OOOOE Vol.102,No.6 December 2006 |
| Changes in Cold/Warm Thresholds with Advancing Age―The Case of Adult Women Aged from the 20s to the 80s― | |
| Yukiko Uchida,Teruko Tamura,Fusako Iwasaki | SEN’I GAKKAISHI(報文) Vol.65,No.5(2009) |
| Peripheral Warm and Cool Thresholds in Malaysian and Japanese Males | |
| Joo-Young LEE,Mohamed SAAT,Chin-Mei CHOU,Titis WIJAYANTO,Hitoshi WAKABAYASHI,Yutaka TOCHIHARA | 日本生理人類学会誌 Vol.14特別号 第60回大会要旨集(北海道 2009年6月) |
| Age-related differences in cutaneous warm sensation thresholds of human males in thermoneutral and cool environments | |
| Yutaka Tochihara,Teruyuki Kumamoto,Joo-Young Lee,Nobuko Hashiguchi | Journal of Thermal Biology36(2011)105–111 |
| cold/warm thresholds,skin temperature and skin blood flow waves in young women with cold constitutions(hie-sho) | |
| Mariko Sato,Teruko Tamura | ICB2008,Clothing,Poster |
Patent number. 3888749