How does the presence of a central bar structure (SB) dynamically influence the galaxy?

Answer

The bar can influence the movement of gas and stars, often channeling material inward toward the core

The existence of a central bar signifies a dynamically different system than a non-barred spiral, and one function attributed to the bar is influencing the flow of gas and stellar material, directing it towards the center.

How does the presence of a central bar structure (SB) dynamically influence the galaxy?
Spaceclassificationgalaxyastronomy