Evidence map›Paper›PMID 25552573›Full record

ArticleSocial cognitive and affective neuroscience2015

Impaired acquisition of classically conditioned fear-potentiated startle reflexes in humans with focal bilateral basolateral amygdala damage.

Floris Klumpers, Barak Morgan, David Terburg, Dan J Stein, Jack van Honk

Abstract read
In one paragraph

Article in Social cognitive and affective neuroscience, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

37 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  7. Fear-potentiated startle reveals diminished threat extinction in pathological anxiety.International journal of psychophysiology : official journal of the International Organization of Psychophysiology · 2023
    Article
  8. Review
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  10. Temporally and anatomically specific contributions of the human amygdala to threat and safety learning.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
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  19. Candidate Biomarkers of Suicide Crisis Syndrome: What to Test Next? A Concept Paper.The international journal of neuropsychopharmacology · 2020
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Floris KlumpersDepartment of Experimental Psychology, Utrecht University, 3584 CS Utrecht, The Netherlands, Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behavior, Radboud University Nijmegen Medical Centre, 6500 HB Nijmegen, The Netherlands, F.Klumpers@donders.ru.nl.
Barak MorganDepartment of Human Biology, MRC Medical Imaging Research Unit, University of Cape Town, 7700 Cape Town, South Africa.
David TerburgDepartment of Experimental Psychology, Utrecht University, 3584 CS Utrecht, The Netherlands, Department of Psychiatry and Mental Health, University of Cape Town, 7925 Cape Town, South Africa, and.
Dan J SteinDepartment of Psychiatry and Mental Health, University of Cape Town, 7925 Cape Town, South Africa, and.
Jack van HonkDepartment of Experimental Psychology, Utrecht University, 3584 CS Utrecht, The Netherlands, Department of Psychiatry and Mental Health, University of Cape Town, 7925 Cape Town, South Africa, and Institute of Infectious Diseases and Molecular Medicine, University of Cape Town, South Africa.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Based on studies in rodents, the basolateral amygdala (BLA) is considered a key site for experience-dependent neural plasticity underlying the acquisition of conditioned fear responses. In humans, very few studies exist of subjects with selective amygdala lesions and those studies have only implicated the amygdala more broadly leaving the role of amygdala sub-regions underexplored. We tested a rare sample of subjects (N = 4) with unprecedented focal bilateral BLA lesions due to a genetic condition called Urbach-Wiethe disease. In a classical delay fear conditioning experiment, these subjects showed impaired acquisition of conditioned fear relative to a group of matched control subjects (N = 10) as measured by fear-potentiation of the defensive eye-blink startle reflex. After the experiment, the BLA-damaged cases showed normal declarative memory of the conditioned association. Our findings provide new evidence that the human BLA is essential to drive fast classically conditioned defensive reflexes.

Indexed as

AdultAmygdalaConditioning, ClassicalEmotionsFearFemaleHumansMemoryReflex, StartleYoung Adultamygdalabasolateralfear conditioningfMRIlesionstartle

Identifiers

PMID25552573
PMCPMC4560935

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.