What is Insula?
The insula is a cortical region buried within the lateral sulcus that plays a critical role in interoception, emotional awareness, empathy, and the integration of bodily signals with cognitive and emotional processing.
How it works
The insula is divided into the anterior insula (involved in subjective feelings, empathy, and awareness) and the posterior insula (involved in basic somatosensory processing and pain). The anterior insula is a key node in the salience network, helping to detect which stimuli are personally relevant and require attentional resources. It activates during experiences of physical pain, social rejection, disgust, and empathy, suggesting a common neural substrate for physical and social pain.
Applied example
The finding that social rejection activates the same insular regions as physical pain (Eisenberger et al., 2003) provided neuroscientific evidence for the intuition that social exclusion physically ‘hurts,’ explaining why humans go to great lengths to maintain social bonds.
Why it matters
The insula bridges body and mind, transforming physiological states into felt experiences that guide behavior, making it central to emotional intelligence, empathy, and decision-making.
