The GSR expansion provides connections and pre-amplifications for one channel of Galvanic Skin Response data acquisition (Electrodermal Resistance Measurement - EDR).

*Must be connected to the Shimmer platform to be operational

Description

The Shimmer GSR (Galvanic Skin Response) monitors skin conductivity between two reusable electrodes attached to two fingers of one hand. Caused by a stimulus the sweat glands become more active, increasing moisture on the skin and allowing the current to flow more readily by changing the balance of positive and negative ions in the secreted fluid (increasing skin conductance).

The GSR expansion provides connections and pre-amplifications for one channel of Galvanic Skin Response data acquisition (Electrodermal Resistance Measurement).The Shimmer GSR is connected to the Shimmer main board via the internal connector pin, and is contained within the Shimmer enclosure, with two leads connecting to the finger tip electrodes. See how the GSR module is connected to the Shimmer platform.

Features and Benefits

Reliable System

• Validated for use in biomedical-oriented research applications
• Four digitally controlled measurement ranges which developers use to ensure accurate measurements
• Gain selection can be hard-coded or manually selected
• Phasic conductance can be observed with respect to baseline level of skin conductance

Real-time Data Collection, Display, and Storage

• Provides pre-amplification of GSR signal, converts to digital format, and can stream directly to a host device without the need for an intermediate receiving unit.
• Provides real-time physiological data collection and streaming to a host PC for real-time display and storage
• Real-time LabVIEW drivers and support library for application specific analysis and software interface development

Lightweight, Wearable Unit

• Designed to be wearable, the Shimmer GSR addresses challenges of mobility and provides a high-quality, scientifically reliable data as either a wireless transmitter or an autonomous data-logger
• Free from wired constraints, the Shimmer GSR provides a comfortable and distress free solution for athletes, children, elderly and patients with a disability
• The small size and lightweight (28g) design allows the unit to be worn on any body segment for full range of motion during all types of tasks or exercises, without effecting their movement, techniques, or motor pattern

Adaptability (Wired vs. Wireless)

• Offers greater ergonomic value than larger wired units
• Easily combine GSR data with Shimmer’s integrated accelerometer for greater contextual information
• Easily combine GSR data with the full range of Shimmer Biophysical, Kinematic and Ambient sensor modules

Standard Shimmer Functionality

• MSP430 microcontroller (8mHZ, 16 Bit), Bluetooth – RN-42, 802.15.4 radio - TI CC2420, Integrated 2GB micro SD card, 450mAh rechargeable Li-ion battery, stylish enclosure, wearable and highly configurable to user/developer’s specific needs

Applications

• Affective Computing and Cognitive Factors Research
• Stress Detection and Analysis
• Emotional Engagement
• Psychological Arousal (Mental Effort, Excitement, Shock)
• Relaxation Training and Psychotherapy
• Marketing Research
• Weight and Nutritional Management

Download the Shimmer Wireless GSR Sensor Data Sheet.