Dr Sanjay Gupta - Yorkshire Consultant Cardiac Specialist puts in plain words with regards to Palpitations

Heart palpitations are pulses that abruptly become more noticeable.
senses">sensations in your throat or neck.
Palpitations may seem alarming, but typically they arebenign and are not an indicator of an issue along with your heart.

http://thedazzlefly.tumblr.com/post/124585623764/yorkshire-consultant-cardiologist-explains