Academic Consortium Publications for August 2024

Tulipmania is the speculative frenzy for tulip bulbs in 17th-century Holland. With bulb prices skyrocketing, the promise of higher returns reportedly led one man to trade his Amsterdam mansion for a single bulb. It ended in tears when the bubble burst and bulb prices plummeted. Fast forward to 18th-century Britain: another speculative frenzy over South Sea Company shares led many investors (Isaac Newton included) to become rich on paper before losing it all when the bubble finally burst.

This month, we show not all bubbles are quite so disastrous. In a recent manuscript in Physiology & Behavior, Ruth Picó Munyoz, Amparo Tárrega, and Laura Laguna investigated the sensory and physiological effects of bubbles in water. Commercial sparkling water and soda machine water contained more and larger bubbles than water gasified with dissolved baking soda. Carbonation led to increased salivary flow rate, levels of the salivary neurotransmitter substance P, heart rate, and galvanic skin response. These physiological responses were approximately the same regardless of bubble type. Sensory evaluation showed gasified water was significantly lower in effervescence (the sensation of bubbles bursting in the mouth), aggressiveness (the tingling feeling of bubbles), and the perceived quantity and size of bubbles compared to the commercial sparkling water and soda machine water.

Read about bubble perception and other fascinating research published in August by members of the Compusense Academic Consortium here.