Scientists are studying bats and their use of echolocation to learn more about how bats process information to understand and adapt to the world around them. Echoes of hunting They detect and catch their targets through echolocation, or biosonar, the animal equivalent--and precursor--to man-made sonars. How to see what whales hear: biomedical imaging reveals new insights into marine mammal ears
The faster repolarization of the cardiac action potential causes the tenting of the T waves, and the inactivation of sodium channels causes a sluggish conduction of the electrical wave around the heart, which leads to smaller P waves and widening of the QRS complex.
T Wave Changes. In general, T wave changes are very non-specific. They can occur with hyperventilation, anxiety, drinking hot or cold beverages, and positional changes. Dramatic T wave inversions are often seen in the athletic heart syndrome (a constellation of findings not associated with any pathology), and the dramatic T wave inversions associated with CNS events are very rare. Hyperkalemia (hyperpotassemia) can cause tall, peaked T waves.