Freezing in response to social threat: a replication.

Area of Science:

• Psychology
• Neuroscience
• Human Physiology

Background:

• Freezing is an adaptive defensive response to acute stress.
• Recent research indicates freezing can be triggered by social threats, such as angry facial expressions.
• Understanding the physiological underpinnings of freezing in response to social cues is crucial.

Purpose of the Study:

• To replicate and extend previous findings on freezing in response to social threats.
• To investigate physiological responses, specifically heart rate, to viewing emotional faces.
• To explore the role of state anxiety in modulating the freezing response.

Main Methods:

• Participants viewed emotional faces (angry, happy, neutral) while heart rate was measured.
• A baseline heart rate measure was included for comparison.
• Fine-grained analyses of heart rate changes within blocks of emotional face viewing were performed.

Main Results:

• Results support the hypothesis of physiological freezing responses to angry faces.
• Heart rate deceleration was observed in the initial 30 seconds of viewing angry faces compared to baseline.
• State anxiety showed a marginal modulation of the freezing response, but the correlation with heart rate was not replicated.

Conclusions:

• The study provides evidence for physiological signs of freezing in response to social threat (angry faces).
• Heart rate deceleration is a key indicator of this freezing response, particularly in the early stages of threat exposure.
• Further research is needed to fully elucidate the mechanisms and modulators of social threat-induced freezing.