New York, Aug 14 IANS | 2 months ago

Just like humans, dolphins and whales too while experiencing pleasure squeal with delight to savour moments of joy, says a study.


The time delay between dolphins and whales receiving a reward and their squeals is the same as the delay between a pleasant experience and dopamine release - suggesting that dolphins and whales experience pleasure, the study noted.

Dopamine is a neurotransmitter that helps control the brain's reward and pleasure centers. Once dopamine is released, a person usually feels good and may get a boost of self-confidence.

"We think we have demonstrated that it (the victory squeal) has emotional content," said lead author Sam Ridgway, president of the National Marine Mammal Foundation, US.

Over his five-decade career Ridgway has asked these cetaceans various questions, including how deep they can dive and how depth affects their hearing.

As he trained each animal to answer his questions, he rewarded them with fish treats, and each time that they received a reward he remembers that they squealed.

"Normally we worked in open waters in the San Diego Bay or out in the ocean. Our recordings sometimes have a lot of background noise, so most of the analysis has to be done by hand using the human ear," Ridgway added.

When humans squeal out of happiness there is a 100-200 millisecond delay from the time of the event and the happy sound.

"The dolphins take an average of 151 milliseconds extra time for this release, and with the belugas it is about a 250 millisecond delay," Ridgway said.

The study appeared in the Journal of Experimental Biology.

(Posted on 14-08-2014)

Share This Page:


Post your comments


Information on States of India:

Andaman Nicobar | Andhra Pradesh | Arunachal Pradesh | Assam | Bihar | Chandigarh | Chhattisgarh | Dadar Nagar Haveli | Daman Diu | Delhi | Goa | Gujarat | Haryana | Himachal Pradesh | Jammu Kashmir | Jharkhand | Karnataka | Kerala | Lakshadweep | Madhya Pradesh | Maharashtra | Manipur | Meghalaya | Mizoram | Nagaland | Orissa | Pondicherry | Punjab | Rajasthan | Sikkim | Tamil Nadu | Tripura | Uttar Pradesh | Uttaranchal | West Bengal

INDIA REGIONAL MAPS:

Andhra Pradesh Travel Map | Bihar Travel Map | Goa Travel Map | Gujarat Travel Map | Haryana Travel Map | Himachal Pradesh Map | Karnataka Travel Map | Kerala Travel Map | Maharashtra Travel Map | Punjab Travel Map | Rajasthan Travel Map | Sikkim Travel Map | Tamil Nadu Travel Map | Uttar Pradesh Travel Map | West Bengal Travel Map |

KERALA TRAVEL MAPS:

Alappuzha | Ernakulam | Idukki | Kannur | Kasaragod | Kollam | Kottayam | Kozhikode | Malappuram | Palakkad | Pathanamthitta | Thiruvananthapuram | Thrissur | Wayanad |

TRAVEL MAPS OF INDIA:

Airports of India | Districts of India | India Pilgrim Centers | Tourism Map of India | National Highways in India | India Railway Routes |

INDIA CITY MAPS:

Ahmadabad | Bangalore | Chennai | Coimbatore | Delhi | Hyderabad/Secunderabad | Kochi | Kolkata | Mumbai | Pondicherry | Pune | Surat |