Sensitivity of functional tympanic membrane thermometry (fTMT) as an index of hemispheric activation in cognition.

Date

2007

Authors

Cherbuin, Nicolas
Brinkman, Cobie

Journal Title

Journal ISSN

Volume Title

Publisher

Psychology Press, Taylor & Francis

Abstract

The measure of hemispheric activation in cognitive and clinical studies remains out of reach of many scientists due to cost, analysis complexity, and practical consideration of the techniques available such as fMRI, EEG, or EMG. The present study was conducted to determine whether infrared functional tympanic membrane thermometry (fTMT) is a measure of lateralised activation sensitive enough to be used in typical cognitive and clinical experiments. A total of 24 participants had their tympanic membrane temperature measured while performing a letter-matching task. Activation in the two hemispheres was manipulated by changing the proportion of matches occurring in the left and right visual fields and by varying the task complexity. Changes in fTMT due to the greater proportion of matches presented in one visual field and due to the modulation in task complexity were detected. These findings suggest that fTMT is a measure of broad lateralised cerebral activation sensitive enough for use in typical psychological studies.

Description

Keywords

Keywords: adult; article; brain function; cognition; eardrum; eye dominance; female; functional assessment; hemispheric dominance; human; human experiment; male; normal human; sensitivity analysis; task performance; temperature measurement; thermometry; visual fiel

Citation

Source

Laterality

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1080/13576500701218345

Restricted until

2037-12-31