Related Experiment Video
Updated: Mar 10, 2026
12:51
Investigating the Neural Mechanisms of Aware and Unaware Fear Memory with fMRI
Published on: October 6, 2011
13.6K
Assessing fear learning via conditioned respiratory amplitude responses
Giuseppe Castegnetti1,2, Athina Tzovara1,2,3, Matthias Staib1,2
1Department of Psychiatry, Psychotherapy, and Psychosomatics, University of Zurich, Zurich, Switzerland.
Psychophysiology
|December 10, 2016
Summary
This study shows that respiration amplitude responses (RAR) can assess fear memory. A new model distinguishes conditioned responses, offering a robust tool for studying human fear learning.
Area of Science:
- Cognitive Neuroscience
- Psychophysiology
- Respiratory Physiology
Background:
- Cognitive processes influence respiratory physiology.
- Respiration amplitude responses (RAR) may indicate cognitive states.
- Fear conditioning is a model for aversive learning and memory.
Purpose of the Study:
- Investigate if RAR can assess fear memory in cued fear conditioning.
- Develop a psychophysiological model (PsPM) for fear-conditioned RAR.
- Estimate cognitive input into the respiratory system from RAR.
Main Methods:
- Utilized a previously developed psychophysiological model (PsPM) of RAR.
- Developed a response function for fear-conditioned RAR within the PsPM.
- Analyzed data from five experiments on fear acquisition, retention, and conditioning types.
- Compared model-based RAR estimates with peak scoring, skin conductance responses (SCR), and heart period responses (HPR).
Main Results:
- Average RAR differed between conditioned stimuli (CS+ and CS-).
- Model-based estimates of cognitive input successfully distinguished CS+ from CS-.
- Model-based RAR analysis showed higher sensitivity than peak scoring.
- RAR performance in distinguishing CS+ and CS- was similar to SCR but less sensitive than HPR.
Conclusions:
- A novel and robust tool for investigating human fear memory was developed.
- The model-based approach provides sensitive estimation of cognitive inputs from RAR.
- This method offers potential for broad application in diverse experimental contexts for studying fear memory.
Related Concept Videos
01:23Assessment of Respiration
2.2K
The respiratory system's basic structures and primary functions lay the foundation for nurses' comprehensive respiratory assessments. This assessment includes subjective and objective data to gauge the patient's respiratory health.
Subjective Assessment: Nurses interview the patient to gather information directly during the subjective assessment. It includes questions about the individual's medical history, medications, and symptoms, focusing on past respiratory conditions like...
Subjective Assessment: Nurses interview the patient to gather information directly during the subjective assessment. It includes questions about the individual's medical history, medications, and symptoms, focusing on past respiratory conditions like...
2.2K
01:29Assessment of Ventilation II: Respiratory Depth and Rhythm
2.7K
Respiratory Depth
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
2.7K
01:30Assessment of Airway, Skin Color, and Use of Accessory Muscles
1.8K
A thorough assessment of respiratory health is paramount in clinical settings to identify and manage respiratory distress and ensure adequate oxygenation. This article elaborates on the critical aspects of respiratory evaluation, including airway assessment, skin color examination, and the observation of accessory muscle use, which are integral to effectively diagnosing and managing patients with respiratory conditions.
Introduction
The initial evaluation of a patient's respiratory system...
Introduction
The initial evaluation of a patient's respiratory system...
1.8K
01:20Assessment of Ventilation I: Respiratory Rate
2.5K
Assessment of Ventilation
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation:
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation:
2.5K
01:24Physical Assessment of the Respiratory Tract II: Palpation
2.4K
Physical assessment of the respiratory tract is critical in identifying potential health issues. One key component of this assessment is palpation, a technique healthcare providers use to assess the body for abnormalities. This content explores the method of palpation in evaluating the respiratory tract, focusing on thoracic palpation and tactile fremitus.
Thoracic Palpation
Thoracic palpation detects tenderness, masses, lesions, respiratory excursions, and vocal fremitus. The nurse assesses...
Thoracic Palpation
Thoracic palpation detects tenderness, masses, lesions, respiratory excursions, and vocal fremitus. The nurse assesses...
2.4K
01:27Physical Assessment of the Respiratory Tract II: Inspection
1.1K
Physical assessment of the respiratory tract through inspection is a crucial step in understanding the patient's respiratory health. It provides insights into the functioning of the respiratory system, the musculoskeletal structure, and even the patient's nutritional status. This comprehensive approach involves observing several vital aspects: chest configuration, breathing patterns, respiratory rates, skin color, and use of accessory muscles.
Chest Configuration
The chest configuration...
Chest Configuration
The chest configuration...
1.1K