Reduced Amygdala and Ventral Striatal Activity to Happy Faces in PTSD Is Associated with Emotional Numbing
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{"title"=>"Reduced amygdala and ventral striatal activity to happy faces in PTSD is associated with emotional numbing", "type"=>"journal", "authors"=>[{"first_name"=>"Kim L.", "last_name"=>"Felmingham", "scopus_author_id"=>"6602973830"}, {"first_name"=>"Erin M.", "last_name"=>"Falconer", "scopus_author_id"=>"16304013900"}, {"first_name"=>"Leanne", "last_name"=>"Williams", "scopus_author_id"=>"7404478534"}, {"first_name"=>"Andrew H.", "last_name"=>"Kemp", "scopus_author_id"=>"7202027539"}, {"first_name"=>"Adrian", "last_name"=>"Allen", "scopus_author_id"=>"7402802380"}, {"first_name"=>"Anthony", "last_name"=>"Peduto", "scopus_author_id"=>"31367639700"}, {"first_name"=>"Richard A.", "last_name"=>"Bryant", "scopus_author_id"=>"7402594156"}], "year"=>2014, "source"=>"PLoS ONE", "identifiers"=>{"scopus"=>"2-s2.0-84906958209", "sgr"=>"84906958209", "issn"=>"19326203", "doi"=>"10.1371/journal.pone.0103653", "pmid"=>"25184336", "isbn"=>"1932-6203", "pui"=>"600017401"}, "id"=>"19d288eb-520e-32a5-bff8-1ccf768fd116", "abstract"=>"There has been a growing recognition of the importance of reward processing in PTSD, yet little is known of the underlying neural networks. This study tested the predictions that (1) individuals with PTSD would display reduced responses to happy facial expressions in ventral striatal reward networks, and (2) that this reduction would be associated with emotional numbing symptoms. 23 treatment-seeking patients with Posttraumatic Stress Disorder were recruited from the treatment clinic at the Centre for Traumatic Stress Studies, Westmead Hospital, and 20 trauma-exposed controls were recruited from a community sample. We examined functional magnetic resonance imaging responses during the presentation of happy and neutral facial expressions in a passive viewing task. PTSD participants rated happy facial expression as less intense than trauma-exposed controls. Relative to controls, PTSD participants revealed lower activation to happy (-neutral) faces in ventral striatum and and a trend for reduced activation in left amygdala. A significant negative correlation was found between emotional numbing symptoms in PTSD and right ventral striatal regions after controlling for depression, anxiety and PTSD severity. This study provides initial evidence that individuals with PTSD have lower reactivity to happy facial expressions, and that lower activation in ventral striatal-limbic reward networks may be associated with symptoms of emotional numbing.", "link"=>"http://www.mendeley.com/research/reduced-amygdala-ventral-striatal-activity-happy-faces-ptsd-associated-emotional-numbing", "reader_count"=>65, "reader_count_by_academic_status"=>{"Professor > Associate Professor"=>6, "Researcher"=>13, "Student > Doctoral Student"=>3, "Student > Ph. D. Student"=>13, "Student > Postgraduate"=>3, "Student > Master"=>12, "Other"=>1, "Student > Bachelor"=>4, "Professor"=>8, "Unspecified"=>2}, "reader_count_by_user_role"=>{"Professor > Associate Professor"=>6, "Researcher"=>13, "Student > Doctoral Student"=>3, "Student > Ph. D. Student"=>13, "Student > Postgraduate"=>3, "Student > Master"=>12, "Other"=>1, "Student > Bachelor"=>4, "Professor"=>8, "Unspecified"=>2}, "reader_count_by_subject_area"=>{"Unspecified"=>7, "Engineering"=>1, "Agricultural and Biological Sciences"=>6, "Medicine and Dentistry"=>7, "Neuroscience"=>10, "Psychology"=>33, "Social Sciences"=>1}, "reader_count_by_subdiscipline"=>{"Engineering"=>{"Engineering"=>1}, "Medicine and Dentistry"=>{"Medicine and Dentistry"=>7}, "Neuroscience"=>{"Neuroscience"=>10}, "Social Sciences"=>{"Social Sciences"=>1}, "Psychology"=>{"Psychology"=>33}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>6}, "Unspecified"=>{"Unspecified"=>7}}, "reader_count_by_country"=>{"Canada"=>1, "Spain"=>1}, "group_count"=>1}

Scopus | Further Information

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/1659383"], "description"=>"<p>Note: Standard deviations in parentheses. TC = trauma-exposed controls, PTSD = Posttraumatic Stress Disorrder; M = male, F = female; mths = months; MVA = motor vehicle accident; MDD = major depressive disorder, PD = Panic Disorder, OCD = Obsessive Compulsive Disorder; DASS = Depression Anxiety and Stress Scale; dep = depression, anx = anxiety.</p><p>*p<.05,</p><p>**p<.001.</p><p>Summary of demographic and clinical characteristics of the PTSD (n = 23) and Trauma Exposed Control (n = 20) groups.</p>", "links"=>[], "tags"=>["activation", "resonance imaging responses", "right ventral striatal regions", "expression", "ventral striatal reward networks", "Traumatic Stress Studies", "symptom", "Posttraumatic stress disorder", "ventral striatal activity", "PTSD participants"], "article_id"=>1159376, "categories"=>["Uncategorised"], "users"=>["Kim L. Felmingham", "Erin M. Falconer", "Leanne Williams", "Andrew H. Kemp", "Adrian Allen", "Anthony Peduto", "Richard A. Bryant"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0103653.t001", "stats"=>{"downloads"=>1, "page_views"=>8, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Summary_of_demographic_and_clinical_characteristics_of_the_PTSD_n_8202_8202_23_and_Trauma_Exposed_Control_n_8202_8202_20_groups_/1159376", "title"=>"Summary of demographic and clinical characteristics of the PTSD (n = 23) and Trauma Exposed Control (n = 20) groups.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2014-09-03 02:42:03"}
  • {"files"=>["https://ndownloader.figshare.com/files/1659384"], "description"=>"<p><u>Note: TC = trauma-exposed controls,</u></p><p><u>*trend level result.</u></p><p>Summary of between-group t-tests: Increased BOLD signal elicited by happy faces compared to neutral faces in the PTSD (n = 23) and Trauma-exposed controls (TC: n = 20; (p<.005 uncorrected).</p>", "links"=>[], "tags"=>["activation", "resonance imaging responses", "right ventral striatal regions", "expression", "ventral striatal reward networks", "Traumatic Stress Studies", "symptom", "Posttraumatic stress disorder", "ventral striatal activity", "PTSD participants"], "article_id"=>1159377, "categories"=>["Uncategorised"], "users"=>["Kim L. Felmingham", "Erin M. Falconer", "Leanne Williams", "Andrew H. Kemp", "Adrian Allen", "Anthony Peduto", "Richard A. Bryant"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0103653.t002", "stats"=>{"downloads"=>0, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Summary_of_between_group_t_tests_Increased_BOLD_signal_elicited_by_happy_faces_compared_to_neutral_faces_in_the_PTSD_n_8202_8202_23_and_Trauma_exposed_controls_TC_n_8202_8202_20_p_lt_005_uncorrected_/1159377", "title"=>"Summary of between-group t-tests: Increased BOLD signal elicited by happy faces compared to neutral faces in the PTSD (n = 23) and Trauma-exposed controls (TC: n = 20; (p<.005 uncorrected).", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2014-09-03 02:42:03"}
  • {"files"=>["https://ndownloader.figshare.com/files/1659385"], "description"=>"<p>Note: TC = trauma-exposed controls,</p><p>Increased BOLD signal elicited by happy faces compared to neutral faces in the PTSD-No Medication Group (n = 15) vs Trauma-exposed controls (TC: n = 20;), and PTSD-Medication Group (n = 8) vs Trauma-exposed controls (TC: n = 20).</p>", "links"=>[], "tags"=>["activation", "resonance imaging responses", "right ventral striatal regions", "expression", "ventral striatal reward networks", "Traumatic Stress Studies", "symptom", "Posttraumatic stress disorder", "ventral striatal activity", "PTSD participants"], "article_id"=>1159378, "categories"=>["Uncategorised"], "users"=>["Kim L. Felmingham", "Erin M. Falconer", "Leanne Williams", "Andrew H. Kemp", "Adrian Allen", "Anthony Peduto", "Richard A. Bryant"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0103653.t003", "stats"=>{"downloads"=>1, "page_views"=>15, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Increased_BOLD_signal_elicited_by_happy_faces_compared_to_neutral_faces_in_the_PTSD_No_Medication_Group_n_8202_8202_15_vs_Trauma_exposed_controls_TC_n_8202_8202_20_and_PTSD_Medication_Group_n_8202_8202_8_vs_Trauma_exposed_controls_TC_n_8202_8202_20_/1159378", "title"=>"Increased BOLD signal elicited by happy faces compared to neutral faces in the PTSD-No Medication Group (n = 15) vs Trauma-exposed controls (TC: n = 20;), and PTSD-Medication Group (n = 8) vs Trauma-exposed controls (TC: n = 20).", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2014-09-03 02:42:03"}
  • {"files"=>["https://ndownloader.figshare.com/files/1659386"], "description"=>"<p>Note: TC = trauma-exposed controls,</p><p>Increased BOLD signal elicited by happy faces compared to neutral faces in the PTSD-No Depression Group (n = 8) vs Trauma-exposed controls (TC: n = 20;), and PTSD-Depression Group (n = 15) vs Trauma-exposed controls (TC: n = 20).</p>", "links"=>[], "tags"=>["activation", "resonance imaging responses", "right ventral striatal regions", "expression", "ventral striatal reward networks", "Traumatic Stress Studies", "symptom", "Posttraumatic stress disorder", "ventral striatal activity", "PTSD participants"], "article_id"=>1159379, "categories"=>["Uncategorised"], "users"=>["Kim L. Felmingham", "Erin M. Falconer", "Leanne Williams", "Andrew H. Kemp", "Adrian Allen", "Anthony Peduto", "Richard A. Bryant"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0103653.t004", "stats"=>{"downloads"=>1, "page_views"=>5, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Increased_BOLD_signal_elicited_by_happy_faces_compared_to_neutral_faces_in_the_PTSD_No_Depression_Group_n_8202_8202_8_vs_Trauma_exposed_controls_TC_n_8202_8202_20_and_PTSD_Depression_Group_n_8202_8202_15_vs_Trauma_exposed_controls_TC_n_8202_8202_20_/1159379", "title"=>"Increased BOLD signal elicited by happy faces compared to neutral faces in the PTSD-No Depression Group (n = 8) vs Trauma-exposed controls (TC: n = 20;), and PTSD-Depression Group (n = 15) vs Trauma-exposed controls (TC: n = 20).", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2014-09-03 02:42:03"}
  • {"files"=>["https://ndownloader.figshare.com/files/1659379"], "description"=>"<p>Reduced BOLD Activity in Ventral Striatum and Amygdala in PTSD (n = 23) compared to trauma-exposed controls (n = 20) in response to happy (- neutral) facial expressions.</p>", "links"=>[], "tags"=>["activation", "resonance imaging responses", "right ventral striatal regions", "expression", "ventral striatal reward networks", "Traumatic Stress Studies", "symptom", "Posttraumatic stress disorder", "ventral striatal activity", "PTSD participants"], "article_id"=>1159372, "categories"=>["Uncategorised"], "users"=>["Kim L. Felmingham", "Erin M. Falconer", "Leanne Williams", "Andrew H. Kemp", "Adrian Allen", "Anthony Peduto", "Richard A. Bryant"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0103653.g001", "stats"=>{"downloads"=>4, "page_views"=>141, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Reduced_BOLD_Activity_in_Ventral_Striatum_and_Amygdala_in_PTSD_n_8202_8202_23_compared_to_trauma_exposed_controls_n_8202_8202_20_in_response_to_happy_neutral_facial_expressions_/1159372", "title"=>"Reduced BOLD Activity in Ventral Striatum and Amygdala in PTSD (n = 23) compared to trauma-exposed controls (n = 20) in response to happy (- neutral) facial expressions.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2014-09-03 02:42:03"}
  • {"files"=>["https://ndownloader.figshare.com/files/1659380"], "description"=>"<p>Percentage signal change in BOLD response to happy faces (Panel A) in Left Ventral Striatum (LS), Right ventral striatum (RS), Left Amygdala (LA), and Right Amygdala (RA), and percentage signal change in BOLD response to Neutral Faces (Panel B) in Left Ventral Striatum (LS), Right Ventral Striatum (RS), Left Amygdala (LA) and Right Amygdala (RA).</p>", "links"=>[], "tags"=>["activation", "resonance imaging responses", "right ventral striatal regions", "expression", "ventral striatal reward networks", "Traumatic Stress Studies", "symptom", "Posttraumatic stress disorder", "ventral striatal activity", "PTSD participants"], "article_id"=>1159373, "categories"=>["Uncategorised"], "users"=>["Kim L. Felmingham", "Erin M. Falconer", "Leanne Williams", "Andrew H. Kemp", "Adrian Allen", "Anthony Peduto", "Richard A. Bryant"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0103653.g002", "stats"=>{"downloads"=>3, "page_views"=>38, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Percentage_signal_change_in_BOLD_response_to_happy_faces_Panel_A_in_Left_Ventral_Striatum_LS_Right_ventral_striatum_RS_Left_Amygdala_LA_and_Right_Amygdala_RA_and_percentage_signal_change_in_BOLD_response_to_Neutral_Faces_Panel_B_in_Left_Ventral_Striatum_/1159373", "title"=>"Percentage signal change in BOLD response to happy faces (Panel A) in Left Ventral Striatum (LS), Right ventral striatum (RS), Left Amygdala (LA), and Right Amygdala (RA), and percentage signal change in BOLD response to Neutral Faces (Panel B) in Left Ventral Striatum (LS), Right Ventral Striatum (RS), Left Amygdala (LA) and Right Amygdala (RA).", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2014-09-03 02:42:03"}
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Relative Metric

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