When I was studying the ECG chapter in the book "Guyton and Hall Textbook of Medical Physiology", I noticed something odd in one of the pictures:
As you can see the current is shown to be flowing from the area with a more negative potential towards the area with a more positive potential. Also here's the part of the text that alludes to the image:
This process provides electronegativity on the insides of the ventricles and electropositivity on the outer walls of the ventricles, with electrical current flowing through the fluids surrounding the ventricles along elliptical paths, as demonstrated by the curving arrows in the figure.
How is this possible? Isn't the current supposed to flow from an area with a higher potential towards an area with a lower potential?