Multiple Choice
Passage
Prominent theories of emotion have long held that alterations in one's internal physiological state are necessary for the experience of emotion. Interoception involves both the unconscious and conscious perception of one's internal physiological state. The insula (or insular cortex) , located deep within the lateral fissure on both sides of the brain, appears to be largely responsible for interoception. Studies suggest that the posterior insula (PI) is involved with processing homeostatic afferent information such as pain, temperature, hunger, thirst, and the impulse to breathe. In contrast, the anterior insula (AI) appears to process information regarding emotional awareness, the conscious experience of emotion.A recent study evaluated AI activity using functional magnetic resonance imaging (fMRI) . Using fMRI, the participants' brain activity was monitored during two different tasks: an emotion-eliciting task and an interoceptive task.Task 1Participants watched 10 short videos of people recalling personal events that were either negative (eg, surviving a mass shooting attack) or positive (eg, seeing a loved one after a year apart) . After each video, participants rated their reactions on a Likert scale from 1 (no emotional reaction) to 10 (extreme emotional reaction) .Task 2Participants were instructed to monitor their own heart rate and press a button each time they felt their heartbeat. Participants' heart rates were externally monitored to gauge the accuracy of their responses.ResultsNeuroimaging results suggested that both tasks elicited activity in the AI. Furthermore, there was a high degree of overlap in the activity of the right AI and surrounding limbic and paralimbic brain regions at both the individual and group levels.
J. Zaki, J. I. Davis, and K. N. Ochsner ©2012 by Elsevier, B. V., and A. D. Craig ©2003 by Elsevier, B. V.
-The neuroimaging tool used for this study works by measuring which of the following?
A) Electrical impulses
B) Glucose metabolism
C) Radioactive tracing
D) Blood oxygenation
Correct Answer:
Verified
Correct Answer:
Verified
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