@article{12c2fe5632e241b1ab5ef80cfb5ee372,
title = "An inexpensive portable device for measuring puffing behavior by cigarette smokers",
abstract = "A device for counting discrete puffs by cigarette smokers is inexpensive, easily constructed, and fully portable. The device consists of a plastic cigarette holder which is connected to a miniature pressure sensor via 18 gauge polyvinyl tubing. The pressure sensor has two electrical terminals which provide access to a normally open circuit which is closed following a pressure drop produced by puffing on the cigarette holder. The pressure sensor is wired to a common pocket calculator in such a way that each puff is counted by the calculator. The device has been shown to be reliable, and the puff measure is sensitive to a variety of experimental manipulations. The device may serve in either the laboratory setting or may be carried by a smoker to monitor his behavior in his natural environment.",
keywords = "Cigarette smoking, Human research, Interbout interval, Puff monitor, Puff rate, Puffing behavior",
author = "Henningfield, {Jack E.} and John Yingling and Griffiths, {Roland R.} and Roy Pickens",
note = "Funding Information: Figure 1 shows a diagram of the puff monitoring device. The filtration material is removed from a commercially available plastic cigarette holder (e.g., Aqua Filter Corp., Opa Locka, FL). The holder is cut to a 35 mm length and the tapered portion of the holder is discarded. A 2 cm length of an 18 ga needle is inserted perpendicularly through one wall of the holder at the point midway between the two ends and is attached to an appropriate length of black, 18 ga, polyvinyl tubing. The distal end of the tubing is connected to a 2 cm, 18 ga, hypodermic needle which is pressed over the male pressure port of the pressure sensitive switch (No. MPL-502-V-5 mmHg Micro Pneumatic Logic, Inc., North Miami Beach, FL). If desired, the connection points can be glued and the pressure sensor can be glued to the calculator. Two quick disconnect electrical terminals on the pressure sensitive switch provide access to a closed circuit for the duration of a pressure drop of 5 mmHg and greater. The pressure sensitive switch is interfaced with a common portable calculator (e.g., Unisonic {\textregistered} No. 840 or Radio Shack Model EC-257). One terminal of the pressure sensitive switch is wired to the electrical ground of the calculator, and the other terminal is wired to the contact point of the summation key or the con- 1This research was supported by USPHS Grant No. DAO 1935. 2Send reprint requests to: R. R. Griffiths, Department of Psychiatry, The Johns Hopkins University School of Medicine, Baltimore, MD 21205.",
year = "1980",
month = may,
doi = "10.1016/0091-3057(80)90171-9",
language = "English (US)",
volume = "12",
pages = "811--813",
journal = "Pharmacology, Biochemistry and Behavior",
issn = "0091-3057",
publisher = "Elsevier Inc.",
number = "5",
}