Steve Porges’ Polyvagal theory posits that the key role of the mammalian vagus nerve is to support human affiliation. Which of the statements below are consistent with scientific findings that Dacher discussed about the vagus nerve?

People with stronger vagus nerve influence on their heart rate are more socially impulsive.

People with stronger vagus nerve influence on their heart rate tend to experience higher levels of positive emotions.

The vagus nerve is involved in recovering from stress and mobilizing caregiving responses.

The vagus nerve supports aspects of social communication like head and neck movements and vocal intonation.

2,3,4

People with stronger vagus nerve influence on their heart rate are more socially impulsive.

People with stronger vagus nerve influence on their heart rate tend to experience higher levels of positive emotions.

The vagus nerve is involved in recovering from stress and mobilizing caregiving responses.

2,3,4

To determine which of the statements are consistent with scientific findings discussed by Dacher about the vagus nerve, we need to analyze each statement individually:

1. People with stronger vagus nerve influence on their heart rate are more socially impulsive.
This statement is consistent with the Polyvagal theory. According to Porges' theory, individuals with stronger vagus nerve influence on their heart rate tend to exhibit greater social engagement and are more socially impulsive.

2. People with stronger vagus nerve influence on their heart rate tend to experience higher levels of positive emotions.
This statement is consistent with scientific findings. Research has suggested a link between vagal tone (an index of vagus nerve activity) and positive emotions. Higher vagal tone has been associated with greater experience and expression of positive emotions.

3. The vagus nerve is involved in recovering from stress and mobilizing caregiving responses.
This statement is consistent with scientific findings. The vagus nerve plays a role in regulating the body's stress response and promoting recovery from stress. It is also involved in mobilizing caregiving behaviors, such as nurturing and protecting others.

4. The vagus nerve supports aspects of social communication like head and neck movements and vocal intonation.
This statement is consistent with scientific findings. The vagus nerve is involved in regulating various bodily functions, including facial expressions, head and neck movements, and vocal intonation. These functions are crucial for social communication and expressing emotions.

Based on the scientific findings discussed by Dacher, statements 1, 2, 3, and 4 are all consistent with the role of the vagus nerve in supporting human affiliation and social behavior.