A while ago Leaford started a poll to ask about what we meant when we said 'throat kick' because many of us seem to be talking about different things. Well into that poll I found some research that suggested another definition that hadn't been considered so I'm starting a new poll to see if there is any agreement.
Here's a definition of throat hit from tobacco industry researchers:
The sensory attribute most associated with nicotine is described within the company as 'impact' . It may be described by consumers as throat catch, throat hit, throat grip, etc. Our definition of impact is : the sudden sharp but short-lived sensation (typically less than one second in duration) which is noticed immediately the smoke makes contact with the back of the throat . A physiological explanation of the impact sensation is that nicotine causes smooth muscle to contract . The contraction is proportional to the dose of nicotine applied to it. In fact, the relationship between the applied dose and the magnitude of the contraction is logarithmic, but for all practical purposes, the more nicotine the stronger the contraction and hence the impact sensation.
http://www.health.gov.bc.ca/guildford/pdf/bat/122/00012275.pdf
Here's a definition of throat hit from tobacco industry researchers:
The sensory attribute most associated with nicotine is described within the company as 'impact' . It may be described by consumers as throat catch, throat hit, throat grip, etc. Our definition of impact is : the sudden sharp but short-lived sensation (typically less than one second in duration) which is noticed immediately the smoke makes contact with the back of the throat . A physiological explanation of the impact sensation is that nicotine causes smooth muscle to contract . The contraction is proportional to the dose of nicotine applied to it. In fact, the relationship between the applied dose and the magnitude of the contraction is logarithmic, but for all practical purposes, the more nicotine the stronger the contraction and hence the impact sensation.
http://www.health.gov.bc.ca/guildford/pdf/bat/122/00012275.pdf