Uncovering Interoceptive Human Insular Lobe Function through Intraoperative Cortical Stimulation-A Review

Area of Science:

• Neuroscience
• Cognitive Science
• Sensory Processing

Background:

• The insular cortex is a crucial brain region involved in sensory, cognitive, and emotional processing.
• Its role in olfactory information processing and sensory integration is of significant interest.

Purpose of the Study:

• To explore the functional neuroanatomy and connectivity of the insular cortex.
• To investigate the insula's role in olfactory perception and its implications for cognitive processes.
• To examine olfactory processing via insular stimulation as a method to understand higher-level cognition.

Main Methods:

• Review of existing literature on insular cortex function.
• Analysis of stimulation studies in humans focusing on olfactory perception.
• Exploration of research methodologies including advanced imaging and surgical techniques.

Main Results:

• Insular cortex stimulation provides insights into smell perception.
• Olfactory processing via insular stimulation may unlock understanding of higher cognitive functions.
• The insula's connectivity supports sensory integration, particularly for olfaction.

Conclusions:

• Future research should employ multidisciplinary approaches, combining imaging and surgical techniques for studying the insular cortex.
• Awake craniotomies offer opportunities for real-time observation of insular function.
• Olfaction's direct cortical projection provides a precise pathway to explore insular contributions to cognition and emotion.