An audiovisual test of divided attention

Area of Science:

• Neuroscience
• Psychology
• Anesthesiology

Background:

• Reaction time tasks are crucial for assessing cognitive function.
• Subtle effects of depressant drugs on cognitive performance require sensitive measurement tools.

Purpose of the Study:

• To describe a novel audiovisual reaction time task.
• To evaluate the task's performance characteristics and sensitivity to environmental factors.

Main Methods:

• An audiovisual reaction time task was developed and administered.
• Performance was assessed after 15 minutes of practice and tracked for one week.
• The task's sensitivity was tested by exposing participants to trace amounts of anesthetic gases.

Main Results:

• Task performance reached maximum levels after 15 minutes of practice and was sustained for one week.
• Exposure to anesthetic gases led to measurable adverse effects on reaction times.
• Auditory reaction times were initially faster than visual but were more significantly impaired by anesthetics.

Conclusions:

• The developed audiovisual reaction time task is reliable and sensitive to subtle neurophysiological changes.
• This task shows potential utility in studies investigating the effects of depressant drugs on cognitive function.