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Related Experiment Video

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Determining The Electromyographic Fatigue Threshold Following a Single Visit Exercise Test

Determining The Electromyographic Fatigue Threshold Following a Single Visit Exercise Test

Published on: July 27, 2015

Inter-modality influence on the brainstem using an arithmetic exercise.

Rida Al Osman¹, Hussein Al Osman²

¹Faculty of Health Sciences, School of Rehabilitation Sciences, University of Ottawa, 451 Smyth Road, Ottawa, Ontario K1H 8M5, Canada.

The Journal of the Acoustical Society of America

|August 5, 2018

Summary

Top-down influences like selective attention and working memory do not significantly affect the brainstem. This was observed through Frequency Following Responses during a mental arithmetic task in quiet and noisy environments.

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In Ovo Electroporation in the Chicken Auditory Brainstem

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Area of Science:

Neuroscience
Auditory Neuroscience
Cognitive Neuroscience

Background:

The brainstem plays a crucial role in auditory processing.
Understanding how cognitive functions influence subcortical processing is essential.
Previous research has explored top-down influences on auditory perception, but brainstem-level effects remain less understood.

Purpose of the Study:

To investigate the inter-modality influence on the brainstem during a cognitive task.
To determine if selective attention and working memory impact auditory processing at the brainstem level.
To examine these effects in both quiet and noisy listening conditions.

Main Methods:

Utilized Frequency Following Responses (FFRs) to measure brainstem auditory processing.
Employed a mental arithmetic task (Easy, Medium, Difficult) as a cognitive load.
Recorded FFRs in quiet and noise, comparing conditions with and without the mental task.

Main Results:

Top-down influences, including selective attention and working memory, showed no significant effects on brainstem activity.
This finding held true across different cognitive task difficulties.
The results were consistent in both quiet and noisy auditory backgrounds.

Conclusions:

Cognitive tasks involving selective attention and working memory do not modulate brainstem auditory processing.
The brainstem's auditory encoding appears robust and less susceptible to top-down cognitive control.
Future research could explore higher-level auditory cortical regions for such influences.