Bioelectronics Unit

This device was built, tailored on the specific need of the 'A Study on Choice and Reaction Time'.  The purpose of this study is to investigate muscle contraction before and during the choice behaviour. The period between a visual “go” signal and a target touching by an arm, the focal action, was the time of reaction. 

The feedback given by the device informed the subject on the correct or incorrect choice. The features of Reaction Timer are:

• It delivers stimuli in the form of illuminating an LED at one of three positions, the position is chosen in advance by the experimenter the stimulus is preceded by a warning light.
• There is a delay between the warning light and the signal to start the movement, this delay was between 1 and 9 seconds and was determined in a pseudorandom sequence by the device.
• The volunteer touches a pad switch to signal his or her response.
• The device automatically records the time of the warning light, the time of the go signal and the time of the response.
• The experimenter determines in advance the position of the target light i.e. the correct response.
• After each trial the volunteers receive feedback from the device about the correctness of their response. All the results from an experimental session are transferred to a computer as a text file.

For more detail contact the Biolectronics Unit - Mr Nosrat Mirzai.

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First published: 15 September 2015