BIOPAC® Systems, Inc. Logo

Thermal Stimulator

Identify thermal response thresholds

Deliver warm, cool, and hot pain

Ideal for Conditioned Pain Modulation (CPM) protocols

Request More Info
Temperature Stim hot/cold
Part #: STMTHERM

The STMTHERM is a thermal stimulator that can deliver both hot and cold temperature stimulation to a subject. The STMTHERM can be used to identify participant thermoreceptor response thresholds for a variety of applications. The STMTHERM consists of two parts, the Stimulator Control Unit (SCU) and the included Thermal Stimulation Transducer (TSD191 Thermode) to deliver temperature stimuli to participants. The method of delivery for heating and cooling is Peltier – thermoelectric. The thermal response’s baseline will be the resting (normal) temperature of the Thermode in the ambient environment.

The STMTHERM is an “open loop” thermal stimulator, in that there is no temperature feedback incorporated into the STMTHERM design. Accordingly, the STMTHERM behaves similarly to a conventional voltage stimulator where the electrical applied stimulus is a function of stimulus level and associated stimulus loading. In the context of the STMTHERM, the thermal stimulus at the contact area of the Thermode to stimulus zone will be impacted by the heat-carrying capacity of the stimulus zone. The system is controlled via a voltage signal and the Thermode temperature can be increased or decreased in a linear or step-change fashion. The STMTHERM also has two pushbutton test modes that deliver a five-second increase or decrease, respectively, to the stimulus temperature.

The Manual Control dialog in AcqKnowledge allows the user to set a fixed analog output signal and is a nice way to control the system.

 

See More...

Variable Temp

Employ linear or step-change temp change

Cold Stim

Deliver cold temperature stimulation

Hot Stim

Deliver hot temperature stimulation

Thermal Stimulator
View Spec PDF

Are You Looking for These?

Part #: STMTHERM
Categories: Stimulation - Research
Subcategories: Stimulators - Research

Alternatives
For the same Platform

Details

Compatibility


The SCU interfaces directly to one of the AMI100D or HLT100C analog output ports for MP160 Systems, a UIM100C analog output port for MP150 Systems, or with added OUT6 for MP36/MP36R Systems. The SCU can be controlled using AcqKnowledge software “Stimulator Setup” or “Manual Control” features. The analog output signal range is ±10 volts, with negative voltage lowering the temperature of the Thermode and positive voltage increasing the temperature of the Thermode. An LED indicator on the front of the SCU turns red when the Thermode is being heated and blue when it is being cooled.

  • SCU Power (12 V DC, 5 Amp ): power supply included, with appropriate US, EURO, or CHINA power cord
  • SCU Fuse: 3.5 A Fast Blow

The TSD191 has a 30 mm2 contact area, incorporates a heat sink and cooling fan, terminates in a 3-meter cable, and includes a self-adhering strap to hold it in place.

IMPORTANT! Proper operation of the TSD191 requires that fan airflow not be obstructed.

Precision Temperature

In order to obtain an accurate measure of the specific stimulus temperature at the stimulus zone, BIOPAC recommends use of the SKT100C Skin Temperature Amplifier Module and TSD202A Temperature Transducer, where the TSD202A is placed between Thermode and stimulator zone.

Closed Loop Control

“Closed loop” control allows continuous temperature readings between the thermode and the stimulating surface to deliver precision stimulation. The STMTHERM device does not have “built-in” closed loop control of temperature, but closed loop control can be achieved with an extended setup configuration that adds the SKT100C Skin Temperature Amplifier and TSD202A temperature probe.  STMTHERM plugs into STM100C and STM100C is set to I/O 15 as input.

Using this setup, precise probe temperature readings are available at any given time. Control channels in AcqKnowledge are then used to modulate the input voltage sent to STMTHERM, to maintain loop control, by monitoring probe temperature.

Response Qualifications

  • All steady-state temperature readings are referenced to contact with air.
  • Rise/fall times to steady-state are referenced to contact with air and to the ambient room temperature during testing.
  • When the device contacts skin, the skin functions as a greater heat sink/cooling source than air, so those performance values will change.Thermal Stimulation data

 

Videos

Integrating BIOPAC Research Systems | Data Acquisition & Analysis

Event Marks

Focus Areas | Automatically Create Using Define Between Events

Support

Downloads/Resources

Knowledge Base

Recommended Items

Spotlight On
free BIOPAC webinar

Evoked Potentials Part II: Event-related or Endogenous Evoked Potentials (ERP)

Learn how to record event-related or endogenous evoked potentials (ERP).

You will learn about:
– Introduction to ERPs
– Theory and guidelines for recording ERPs
– How to record great ERPs data
– Wired and wireless wearable EEG-fNIRS bimodal response to oddball paradigm
– How to mismatch negativity in a virtual world
– How to prepare data for analysis
– Workflow Automation Tools

On Demand Playback

Register Now
Latest News

New Citations | BIOPAC in Psychophysiology Research

The mind and body work together in many ways and psychophysiology research provides insight to these connections. BIOPAC has a variety of systems to power your emotion, arousal, stress, cognitive assessment, group interaction, startle, and other psychophysiology research. Here are some recent studies that have used BIOPAC systems for psychophysiological research… Skin conductance, facial EMG, […]

Seenel Imaging and BIOPAC Systems, Inc. Announce a Global Partnership

           For immediate release: January 4, 2023 Amiens, France and GOLETA, California, USA Seenel Imaging SAS and BIOPAC Systems, Inc. have formed a long-term global partnership to distribute MedelOpt®, Seenel Imaging’s groundbreaking wearable neuroimaging device for the neuroscience research market. Seenel Imaging, based in France, continues its international expansion by partnering with BIOPAC Systems, […]

Read All
Request a Demonstration
Request a Demonstration