Physiological lab module system

The School's physiological lab module system is designed to house various types of modules used in the collection of physiological data. Each unit can accomodate up to 5 standard width modules (14HP) and supply auxillary DC power to external equipment if required. The Rackmount Units are designed to work as a stand alone unit or as part of a set.

For example if 4 units were used this would allow up to 20 (4 x 5) modules to be used in the acquisition of data. Each Module has a separate interface enabling it to be connected to a computer for data logging and analysis.

Long term GSR amplifier

The long term galvanic skin response amplifier module is designed to be used in the School's Physiological Lab System (photo above). It provides a Vernier to preset the SRL level and has a front panel SRR bar graph and Zero Setting Indicators. The SRR levels can also be data logged via the computer interface.

Precision temperature monitor

The precision temperature monitor is used in the School's sleep laboratory to measure the relative body core temperature with a relative accuracy of less than 0.1 degrees Celsuis.

STIM response pad interface

The STIM response pad interface unit is designed to enable digital stimulus codes be embedded into raw EEG data files as markers for post analysis of data by computing based algorithms. An example of its application is a Voice Signal Line Key Unit providing a trigger pulse to Stim Response Pad Interface which converts it into a digital weighted code to be embedded in the data acquistion file.

Low noise electret microphone preamplifier

The low noise electret microphone preamplifiers were designed to be used with boundary microphones in the School's audio visual suites. The amplifiers provide a studio quality audio line level output for use with video tape recorders, a mute facilty is also incorporated.

Fibre optic transmitter/receiver

The SSTIM fibre optic transmitter/receiver was designed for use in the Royal Adelaide Hospital's MRI suite. As an MRI environment is a hostile environment for wire based communication techniques, a fibre optic was used due to its high noise immunity thus improving the integrity of data transmissions.

Air pressure rate level detector

The air pressure rate level detector (ARD) is typically used for behavioural tasks. It senses a change in air pressure caused by the bulb being squeezed or relaxed and generates a digital trigger when the velocity threshold set by the sensitivity control is exceeded. The ARD is designed to compensate for the effect of thermal heating caused by the subject holding the squeeze bulb.