Empathy is moderated by genetic background in mice.

Area of Science:

• Neuroscience
• Behavioral Biology
• Genetics

Background:

• Empathy involves shared emotional experiences and physiological responses to others' distress.
• Understanding the biological underpinnings of empathy is crucial for studying social behavior.

Purpose of the Study:

• To investigate if exposure to conspecific distress influences responses to cues predicting that distress in mice.
• To examine the role of genetic background in empathic-like behaviors.

Main Methods:

• A mouse model of cue-conditioned fear was used to assess responses to social distress.
• Mice were exposed to cues predicting distress, and physiological (heart rate) and behavioral (freezing) responses were measured.
• Genetic strains C57BL/6J (B6) and BALB/cJ (BALB) were compared.

Main Results:

• Mice responded to environmental cues predicting social distress.
• Heart rate changes were observed when distress vocalizations were emitted.
• C57BL/6J mice exhibited heart rate deceleration and increased freezing responses, unlike BALB/cJ mice.
• Genetic background significantly influenced the magnitude of these empathic-like responses.

Conclusions:

• The study demonstrates that mice exhibit empathic-like responses to social distress.
• These responses are influenced by genetic factors, suggesting a biological basis for empathy.
• The findings support the use of this mouse model for studying the genetic contribution to empathy.