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The lasting effect of words on feeli...

Tabibnia, Golnaz.

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The lasting effect of words on feelings: Psychophysiology and fMRI investigations of long -term habituation to aversive stimuli after repeated exposure with and without words.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	The lasting effect of words on feelings: Psychophysiology and fMRI investigations of long -term habituation to aversive stimuli after repeated exposure with and without words./
Author:	Tabibnia, Golnaz.
Description:	123 p.
Notes:	Source: Dissertation Abstracts International, Volume: 68-01, Section: B, page: 0666.
Contained By:	Dissertation Abstracts International68-01B.
Subject:	Psychology, Psychobiology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3249434
ISBN:	9781109877496

The lasting effect of words on feelings: Psychophysiology and fMRI investigations of long -term habituation to aversive stimuli after repeated exposure with and without words.
Tabibnia, Golnaz.

The lasting effect of words on feelings: Psychophysiology and fMRI investigations of long -term habituation to aversive stimuli after repeated exposure with and without words. - 123 p.

Source: Dissertation Abstracts International, Volume: 68-01, Section: B, page: 0666.

Thesis (Ph.D.)--University of California, Los Angeles, 2006.

Putting feelings into words is one effective way to reduce negative emotions and their long-term physiological consequences (Freud, 1933; Pennebaker, 1997; Taylor, 1997). The mechanisms by which words can ameliorate negative emotions are just beginning to be unraveled. Previous studies using functional magnetic resonance imaging (fMRI) have demonstrated that while perceptual processing of emotionally evocative pictures activates the amygdala, the part of the brain most commonly associated with negative emotions, linguistic processing of those same pictures activates the right ventrolateral prefrontal cortex (RVLPFC) and leads to lower activation of the amygdala (Lieberman, in press; Hariri et al., 2000). However, to date no study has investigated the effect of linguistic processing on emotional reactivity to evocative stimuli in the long-term. In three experiments designed to simulate exposure therapy in phobia, we examined whether autonomic reactivity to aversive pictures is attenuated more on Day 8 if those pictures had been repeatedly exposed on Day 1 along with affective words compared to if they had been repeatedly exposed along with non-affective words or without words. In Experiment 1, healthy individuals were exposed to pictures of disturbing scenes. In Experiment 2, spider-fearful subjects were exposed to pictures of spiders. In both studies, autonomic reactivity decreased from Day 1 to Day 8, particularly in the affective word condition. Furthermore, on Day 8, reactivity was lower in the affective word condition than the other conditions. In Experiment 3, a similar paradigm was used with fMRI to investigate the relationship between RVLPFC activity during exposure and autonomic reactivity a week later. Increased activation of RVLPFC during repeated exposure of aversive pictures on Day 1 predicted lower autonomic reactivity to those pictures on Day 8. Furthermore, consistent with animal models indicating a critical role for medial prefrontal cortex (MPFC) in extinction of fear (Milad and Quirk, 2002), the relationship between RVLPFC activity and autonomic outcome was mediated by MPFC activity. These findings suggest that the pathway identified in animals as necessary for extinction may be activated in humans through linguistic processing, and that increased activation of this pathway is related to reduced emotional reactivity in the long-term.

ISBN: 9781109877496Subjects--Topical Terms:

1017821
Psychology, Psychobiology.

The lasting effect of words on feelings: Psychophysiology and fMRI investigations of long -term habituation to aversive stimuli after repeated exposure with and without words.
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500 $a Source: Dissertation Abstracts International, Volume: 68-01, Section: B, page: 0666.
500 $a Adviser: Matthew D. Lieberman.
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520 $a Putting feelings into words is one effective way to reduce negative emotions and their long-term physiological consequences (Freud, 1933; Pennebaker, 1997; Taylor, 1997). The mechanisms by which words can ameliorate negative emotions are just beginning to be unraveled. Previous studies using functional magnetic resonance imaging (fMRI) have demonstrated that while perceptual processing of emotionally evocative pictures activates the amygdala, the part of the brain most commonly associated with negative emotions, linguistic processing of those same pictures activates the right ventrolateral prefrontal cortex (RVLPFC) and leads to lower activation of the amygdala (Lieberman, in press; Hariri et al., 2000). However, to date no study has investigated the effect of linguistic processing on emotional reactivity to evocative stimuli in the long-term. In three experiments designed to simulate exposure therapy in phobia, we examined whether autonomic reactivity to aversive pictures is attenuated more on Day 8 if those pictures had been repeatedly exposed on Day 1 along with affective words compared to if they had been repeatedly exposed along with non-affective words or without words. In Experiment 1, healthy individuals were exposed to pictures of disturbing scenes. In Experiment 2, spider-fearful subjects were exposed to pictures of spiders. In both studies, autonomic reactivity decreased from Day 1 to Day 8, particularly in the affective word condition. Furthermore, on Day 8, reactivity was lower in the affective word condition than the other conditions. In Experiment 3, a similar paradigm was used with fMRI to investigate the relationship between RVLPFC activity during exposure and autonomic reactivity a week later. Increased activation of RVLPFC during repeated exposure of aversive pictures on Day 1 predicted lower autonomic reactivity to those pictures on Day 8. Furthermore, consistent with animal models indicating a critical role for medial prefrontal cortex (MPFC) in extinction of fear (Milad and Quirk, 2002), the relationship between RVLPFC activity and autonomic outcome was mediated by MPFC activity. These findings suggest that the pathway identified in animals as necessary for extinction may be activated in humans through linguistic processing, and that increased activation of this pathway is related to reduced emotional reactivity in the long-term.
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