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42Evolution

Far Horizons

Love in a time of Prozac; how did our emotions evolve?

Der Liebeskranke Antiochus by Johann Anwander (1715-1770), portraying the lovesick king Antiochus; ruler of the Seleucid empire (now modern Syria) from 281-261 BC. In his novel Love in the time of Cholera author Gabriel Garcia Marquez explores the notion that lovesickness is literally an illness whose effects on the body are comparable to those of cholera. The word ‘choleric’ in English means depressed, irritable and angry, and in Marquez’ native Spanish, cólera can also denote passion, rage and ire. The metaphor illustrates the power our emotions have to affect our physical body and mental processes (Image: Wikimedia Commons)

Der Liebeskranke Antiochus by Johann Anwander (1715-1770), portraying the lovesick king Antiochus; ruler of the Seleucid empire (now modern Syria) from 281-261 BC. In his novel Love in the time of Cholera author Gabriel Garcia Marquez explores the notion that lovesickness is literally an illness whose effects on the body are comparable to those of cholera. The word ‘choleric’ in English means depressed, irritable and angry, and in Marquez’ native Spanish, cólera can also denote passion, rage and ire. The metaphor illustrates the power our emotions have to affect our physical body and mental processes (Image: Wikimedia Commons)

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A dolphin mother calls to her calf using its unique signature whistle and teaches it to hunt. Male dolphins call each other’s whistle signatures when hunting. When meeting a new pod, dolphins call using their own signature whistles, as though announcing who is there. Whilst most mammals identify each other by scent, dolphins hold their breath when diving, so cannot use this sense. Instead these animals use signature calls (‘names’) to stay in contact with each other in low visibility conditions, and to strengthen social bonds between parents and offspring (Image: Wikimedia Commons)

Putting things into words

The dolphin calf is barely three weeks old.  His mother nuzzles at him, calling softly.  The calf responds, mimicking her…

Film poster of the 1957 sci-fi comedy 'Invasion of the Saucer-Men' (Image: Wikimedia Commons)

Could your brain be five times bigger?

Our eyesight is adapted to recognise certain shapes and patterns, particularly those similar to the elongate bodies and scaly skin of snakes. Some researchers suggest this stems from an ancient mechanism in our neurology that enabled our ancestors to be particularly effective at recognising snakes. This implies that like other higher primates today, our ancestors needed to be particularly wary of these lithe predators. This visual acuity for patterns also applies to faces. In fact we can see snakes and faces in almost anything… (Image: Wikimedia commons)

Feeling the fear: the ecology of our most basic emotion

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