Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS2549836 A
Publication typeGrant
Publication dateApr 24, 1951
Filing dateJun 14, 1946
Priority dateJun 14, 1946
Publication numberUS 2549836 A, US 2549836A, US-A-2549836, US2549836 A, US2549836A
InventorsDunn Arthur L, Mcintyre Archibald R
Original AssigneeDunn Arthur L, Mcintyre Archibald R
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electrode-carrying headgear for electroencephalographic analysis
US 2549836 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Aprnl 24, 1951 A. R. MCINTYRE ET AL 2,549,835


1 This invention relates to an .electrodeecarryi headgear for use in. electroencephalographic ex? aminations. More. particularly, it relates to; a

headgear equipped with a pluralitytofelectrodes each. adjustable to any-desiredposition in a given areaofzthe. scalp of-theipatientzonwhom theiheadgearisaused.

In making anexamination of; this. type, it: is necessary to: locate electrodes at diiferentpositions on, the scalp. and: tomake-v at record ofelectrical data .as it isrinfiuenced bythecharacteristics of. the. conducting paths between: the: particular electrodes used: for a: given. reading. It. has: been proposed to. usezgauze or'bands tohold-suohi eIec-- trodes. in place but: thattechnique: is slow; unwieldly; and; uncertain, It: has also been proposed to; fasten the electrodes in. place with col:- lodionor: similarcementing. materials; but that technique is likewise slow and best; results re- 7 quire a skillful operator-to apply andzremovethe electrodes.

The headgear herein described isdevoid oft the disadvantages inherent in: earlier methods of making electroencephalographic examinations. It facilities shifting pairs '01 groups of electrodes rapidly to any: partof-the-skull; enabling: an examination to be made inw-a minimum of timevand with maximum cooperation from the patient.

Ref erringto the drawings: Fig. 1 is a side elevation of. a headgear for making electroencephalographic examinations and The headgear is essentially a frame; consistin in partof an oval band lu made; of 4 /2;- x /g inch, fiber strip, and.. dimensioned. toallow aproximately 2; to. 3; inches; clearance all; around, between headv andghand; when. placed over a male. head ofaveragesize- (Figs; 14 and 2):.. The-frame consistsfilrther of; two members I. I:- and. t2 which arch above the head; andwhich; at their lower ends, are piyotallyconnected as at, l;3 to; the oval.

band at itsoppositesides These; connections are made .-wi th bolts; and wingnuts, I.4:which: facilitate ivotallv adjusting; the arched members and see. curing them in-their different aclciustedit si iolrs.=

The; arched. mem ers: H I and; I2.. like; the; avail 2 band. 10,,may-be made of l /zx' inchfiberstrip and preferably dimensioned to clear the head by about; 2 to 3* inches. "The oval band Ill and the arched-members Hi'and I2'are equipped with electrodes F5 to: whichfurther reference is made lateron.

During an: electroencephalographic. examination, it important that no portion ofzthe wei'ght of; the headgear be transmitted to the head of the patient; To'thisend, the headgear may be supported by a spring [.6 why a supportingdevice whi'chincludes a split. cylindrical clamp If! adapted to be tightenedirrplaceon a fixed horizontal bar supportlld. An angular shaped metal bracket 1 9., fastenedrati-ts' lower endfto onemembers'of the. split'clamp H, is connected' to the 'oval band Hi at..-the rear'by a hinge 2'0 which makes it possible quickly and easily to: swingthe head gear into or out of position relative to the patients head;

A head rest 2| at? the rear of the headgear serves to: support the patients head; It is VJ-shaped', padded at the front. for comfort and is held" in place by a U Sha'ped bracket 22 at the outer ends of whose legs it is secured; The legs are each made in two partswhich telescope together and" provide for a limited adjustment of theuheadfirest in a fore and'aft" direction. Thumb screws which pass through registering slots in thetelescoping legs enable the head rest to be secured in its different adjusted positions. The u sh'aped'bracltet'in turnis secured to the clamp 1.1 "which constitutes the primary support for the headgear;

During an examination, the patients' head'is clamped;betweenthe head rest 21' which engages the head: atrthe'rearand nose member 23 which engages the head at the front (Figs. 1; 2 and'6 The nose member is supported' in the oval band at' the front and is adjustable in a fore-and aft directionto accommodate headsof'difierent sizes.

The nose piece is adapted to engage the bridge ofthe-zpatients nose. To this-end; it is bent for wardly-"atithe' top to clear the forehead and forwardly' at the bottom where it is: concave toifit the nos e; The. upperfandl lower portions are, com nected together by.-a. reinforcing element 24 which swivels, at v the: inner; end of? the adjustable:


The adjustableimounting includesa' cylindrical supporting member 25 havinga largerouter portiOny presenting. a shoulder 2.6.; which. engages the ovalband In at: the front;- and; a smaller portion 217- passingthrough; ahole in sai-dnband. A nut '2 8z issthr adcdzup. tighten the; smaller portion. 21.

of the member to hold the latter securely in place. The adjustable mounting further includes a rod 29 formed with a head 30 at its outer end and which is threaded through a sleeve 3| slidably arranged in the supporting member which is axially drilled for the purpose. The sleeve is formed at its outer end with a flange 32 which is received in an enlarged hole drilled in the larger outer portion of the supporting member 25. This enlarged hole presents a shoulder at its base against which the flange 32 is resiliently held. by a spring 33 reacting between the flange and a bushing 34 threaded into the enlarged hole at its outer end. The rod 29 which is threaded through the sleeve 3! has an enlarged extension at its inner end to which the nosepiece 23 is swiveled. With this arrangement, the nosepiece 23 is moved inwardly into engagement with the patients nose as the screw head 3% is turned in one direction and, as the nosepiece engages the bridge of the patients nose, its further movement is against the reaction of the spring 33 which thus determines the clamping pressure exerted.

The headgear as shown supports four pairs of electrodes l5, although a greater number may be used if desired. Those for examining the frontal and parietal portions of the head are carried by the arched bands H and I 2, whereas those for examining the occipital portion of the head are carried by the oval band I!) near the rear. In addition, there are two mastoid electrodes adapted to engage the head just behind the ear.

Each electrode i5 is carried by an adjustable element comprising a threaded rod 3 1' formed at one end with an adjusting knob 3-5 and provided at the other end with an insulating rod 85 which is threaded or molded on the rod 34' (Figs. 3 and 4). The electrode itself is cylindrical in shape, overlies a substantial area of the head and is concave at the outer end where it makes contact with the head. It is hollowed out at its other end as at 31 to receive the insulating rod 36. The electrode 15 is drilled. through axially to accommodate a short rod 38 which, at its inner end, is threaded into the insulating rod 36, and at its outer end is upset to form an annular shoulder 39. A spring 46 which encircles the rod 38 and reacts between the end of the insulating rod and the base of the hollowed out portion 31 of the electrode, causes the concave surface of the electrode resiliently to engage the shoulder 39. Sufficient clearance is provided around the bar 33 to permit the electrode to pivot and assume whatever axial angularity is demanded to fit snugly against the head in a manner to encompass substantially the entire underlying area thereof. The spring 49 holds the electrode resiliently in p ce.

The rods 34 which carry the electrodes are each threaded through a ball 4i and those associated with the electrode carried by the arched members H and [2 are arranged for longitudinal adjustment along said members. For this purpose, the arched members are formed with longitudinal slots 42 large enough to accommodate the ball pivot. Each slot is equipped along its opposite edges with guides in which the ball is slidably received. The guides are formed by strips 43 of somewhat resilient metal which overlap the opposed edges or" the slots and which are secured by riveting on both sides of the members H and 12. According to this arrangement, the rods t l may be adjusted to move the electrodes it toward and away from the patients head, may be caused to assume any desired angular position with re- 4 spect to the members It, II and i2 which carry them, and may be moved along the members longitudinally to any desired position within the confines of the guides. The metal strips 43 forming the guides terminate short of the ends of the slots 42 so as to permit the insertion of more electrodes, should that appear desirable.

The mastoid electrodes are in-all respects the same as those just described except for the manner in which they are mounted .(Fig. 5). The mounting of a mastoid electrode includes a larger cylindrical portion 44 presenting an annular shoulder adapted to engage the inner face of a fiber element 15 depending from the oval band [B adjacent the ear, and a smaller threaded section 46 which extends through a slot in the depending element to, accommodate a nut c1 which may be screwed up tightly to hold the electrode mounting in different adjusted vertical positions. The element 54 has an enlarged socket which receives the ball 4| of an electrode unit which otherwise is the same as the electrode units previously discussed. The ball is held in position by a collar 48 threaded into the socket.

i Each electrode 55 is arranged to be connected with the'electroencephalograph (Figs. 1 and 3). To this end there is provided a terminal board 49 near the back of the frame which is supported by an upright bar fastened to the headgear at the rear. This board has connections to accommodate jacks 53 which, in turn, are connected. each by a flexible wire 52 to an appropriate electrode below its insulating element.

From what has been said, it is apparent that the improved headgear enables electrodes to be applied to the head and shifted from place to place thereon with the utmost speed and facility.

The invention has been described in connection with its preferred embodiment and many modifications thereof will suggest themselves within its spirit. The invention is to be limited, therefore, only by the scope of the appended claims.

What is claimed is:

1. An electrode for a headgear arrangement for use in electroencephalographic examinations and which inuse is adjustable into and out of engagement with the head, said electrode comprising a rod adapted, when mounted in the headgear, to be adjusted in a direction longitudinally of its axis, a head contacting element formed to overlie a substantial area of the head when in engagement therewith a pivotal connection scour ing said element at the end of the rod and per mitting angular adjustment between the element and the rod, and. a spring reacting between the head contacting element and the rod to cause the element normally to assume a given position with respect to the rod, said head contacting element being arranged to yield against the reaction of said spring and to adjust itself to encompass substantially the entire underlying head area as the electrode is'adjusted to bring its head contacting element into engagement with the head,

2. An electrode for a headgear arrangement for use in electroencephalographic examinations and which in use is adjustable into and out of engagement wth the head, said'ele'ctrode comprising an insulating rod, an electric conducting head con tacting element adapted to overlie a substantial area of the head when in engagement therewith, pivctally connected at one end of the rod to permit angular adjustment between the element and the rod, a spring reacting between the element and the rod to cause the element normally to as sumea-given position with respect to the rod,

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date Saighman Dec. 3, 1907 Cruse Nov. 29, 1921 Catlin Sept. 18, 1928 Ellis July 16, 1940 Garceau Oct. 8, 1946 Ulett et al Sept. 2, 1947

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US872688 *Dec 30, 1903Dec 3, 1907Edward S SaighmanElectrical and thermal cupping device.
US1398842 *Feb 9, 1920Nov 29, 1921George M CruseSkullcap frame and guide
US1684860 *Mar 12, 1927Sep 18, 1928Catlin De Forest BEye-treating apparatus
US2208023 *Aug 21, 1937Jul 16, 1940Ellis Francis CElectrode
US2409033 *Nov 4, 1941Oct 8, 1946Lovett GarceauElectroencephalograph device
US2426958 *Dec 27, 1944Sep 2, 1947Claussen Fred BElectrode holder for use in electroencephalography
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3089483 *Mar 4, 1959May 14, 1963Sheatz Guy CMultiple electrode holders for indicating nerve responses to stimulation
US3115140 *Aug 18, 1960Dec 24, 1963Baltimore Instr CompanyApparatus for stereotaxic brain operations
US3411495 *Dec 14, 1965Nov 19, 1968United Aircraft CorpBio-electrical sensor
US3464403 *Jul 14, 1965Sep 2, 1969Ceskoslovenska Akademie VedSensing device for a plethysmograph
US3490439 *Jul 30, 1965Jan 20, 1970Rolston Dale RElectrode holder for use with an electroencephalograph
US3565055 *Dec 23, 1968Feb 23, 1971Amoroso Marie DElectrode holder
US3604411 *Jun 16, 1969Sep 14, 1971Canadian Patents DevElectroencephalograph having meter probe movable in a calvarium-shaped liquid filled tank and method of use
US3658054 *May 11, 1970Apr 25, 1972Gen Technical Services IncAdjustable helmet face mask
US3735753 *Nov 9, 1971May 29, 1973Humetrics CorpHead harness for eeg electrodes
US3810459 *Apr 27, 1972May 14, 1974American Optical CorpTranscutaneous blood vessel probe with relocation marker
US3848582 *Jul 10, 1972Nov 19, 1974Medical Res Labor IncPortable electrocardiographic signal apparatus
US3998213 *Apr 8, 1975Dec 21, 1976Bio-Volt CorporationSelf-adjustable holder for automatically positioning electroencephalographic electrodes
US4033333 *Dec 10, 1975Jul 5, 1977Combined Scientific Resources CorporationElectrode arrangement for taking electrocardiograms
US4084583 *Apr 7, 1976Apr 18, 1978Siemens AktiengesellschaftMethod and apparatus for measuring the bioelectrical activity under an electrode resting on a patient
US4457300 *Jun 7, 1982Jul 3, 1984Ohio Medical Instrument Co., Inc.For retaining tissue
US4457309 *Jun 30, 1981Jul 3, 1984Elmeskog Alf UElectrocardiographic electrode device
US4632120 *Apr 25, 1985Dec 30, 1986Westinghouse Electric Corp.Subkeratinous electroencephalographic probe
US4632122 *Apr 24, 1985Dec 30, 1986Johansson Nils EMethod and apparatus for conducting brain function diagnostic test
US4706679 *Jan 27, 1986Nov 17, 1987Westinghouse Electric Corp.Disposable monitor for an EEG head set
US4709702 *Apr 25, 1985Dec 1, 1987Westinghouse Electric Corp.Electroencephalographic cap
US4751928 *Jun 9, 1987Jun 21, 1988Slovenska Akdemie Vied BratislavaMultielectrode system for surface registering of electric heart potentials
US4770180 *Mar 10, 1987Sep 13, 1988Westinghouse Electric Corp.Electroencephalographic head set with a disposable monitor
US4928705 *Dec 8, 1987May 29, 1990University Of Pittsburgh Of The Commonwealth System Of Higher EducationAcoustic aneurysm detector and associated method
US4957000 *Jan 18, 1989Sep 18, 1990Hamamatsu Photonics Kabushiki KaishaApparatus for obtaining information on the interior of an object
US5123413 *Oct 30, 1990Jun 23, 1992Teijin LimitedElectric therapeutic apparatus
US6178344 *Mar 2, 1999Jan 23, 2001The United States Of America As Represented By The Secretary Of The NavyReconfigurable array for positioning medical sensors
US7158822 *Jun 15, 2004Jan 2, 2007Headwear, LlcElectrode holder, headwear, and wire jacket adapted for use in sleep apnea testing
US7277742 *May 19, 2005Oct 2, 2007Ad-Tech Medical Instrument CorporationCortical electrode support assembly
US8209224Oct 29, 2009Jun 26, 2012The Nielsen Company (Us), LlcIntracluster content management using neuro-response priming data
US8270814Jan 21, 2009Sep 18, 2012The Nielsen Company (Us), LlcMethods and apparatus for providing video with embedded media
US8326396 *Mar 24, 2010Dec 4, 2012Brain Products GmbhDry electrode for detecting EEG signals and attaching device for holding the dry electrode
US8335715Nov 19, 2009Dec 18, 2012The Nielsen Company (Us), Llc.Advertisement exchange using neuro-response data
US8335716Nov 19, 2009Dec 18, 2012The Nielsen Company (Us), Llc.Multimedia advertisement exchange
US8386312May 1, 2008Feb 26, 2013The Nielsen Company (Us), LlcNeuro-informatics repository system
US8386313Aug 27, 2008Feb 26, 2013The Nielsen Company (Us), LlcStimulus placement system using subject neuro-response measurements
US8392250Aug 9, 2010Mar 5, 2013The Nielsen Company (Us), LlcNeuro-response evaluated stimulus in virtual reality environments
US8392251Aug 9, 2010Mar 5, 2013The Nielsen Company (Us), LlcLocation aware presentation of stimulus material
US8392253May 16, 2008Mar 5, 2013The Nielsen Company (Us), LlcNeuro-physiology and neuro-behavioral based stimulus targeting system
US8392254Aug 27, 2008Mar 5, 2013The Nielsen Company (Us), LlcConsumer experience assessment system
US8392255Aug 28, 2008Mar 5, 2013The Nielsen Company (Us), LlcContent based selection and meta tagging of advertisement breaks
US8396744Aug 25, 2010Mar 12, 2013The Nielsen Company (Us), LlcEffective virtual reality environments for presentation of marketing materials
US8464288Jan 21, 2009Jun 11, 2013The Nielsen Company (Us), LlcMethods and apparatus for providing personalized media in video
US8473345Mar 26, 2008Jun 25, 2013The Nielsen Company (Us), LlcProtocol generator and presenter device for analysis of marketing and entertainment effectiveness
US8484081Mar 26, 2008Jul 9, 2013The Nielsen Company (Us), LlcAnalysis of marketing and entertainment effectiveness using central nervous system, autonomic nervous system, and effector data
US8494610Sep 19, 2008Jul 23, 2013The Nielsen Company (Us), LlcAnalysis of marketing and entertainment effectiveness using magnetoencephalography
US8494905Jun 6, 2008Jul 23, 2013The Nielsen Company (Us), LlcAudience response analysis using simultaneous electroencephalography (EEG) and functional magnetic resonance imaging (fMRI)
US8533042Jul 30, 2008Sep 10, 2013The Nielsen Company (Us), LlcNeuro-response stimulus and stimulus attribute resonance estimator
US8548852Aug 8, 2012Oct 1, 2013The Nielsen Company (Us), LlcEffective virtual reality environments for presentation of marketing materials
US8635105Aug 27, 2008Jan 21, 2014The Nielsen Company (Us), LlcConsumer experience portrayal effectiveness assessment system
US8655428May 12, 2010Feb 18, 2014The Nielsen Company (Us), LlcNeuro-response data synchronization
US8655437Aug 21, 2009Feb 18, 2014The Nielsen Company (Us), LlcAnalysis of the mirror neuron system for evaluation of stimulus
US8762202Apr 11, 2012Jun 24, 2014The Nielson Company (Us), LlcIntracluster content management using neuro-response priming data
US20110237923 *Mar 24, 2010Sep 29, 2011Brain Products GmbhDry electrode for detecting eeg signals and attaching device for holding the dry electrode
US20130104288 *Oct 27, 2011May 2, 2013Nellcor Puritan Bennett LlcHeadband for use with medical sensor
US20140051960 *Dec 27, 2012Feb 20, 2014Yakob BadowerSystems and methods to gather and analyze electroencephalographic data
EP0199214A2 *Apr 11, 1986Oct 29, 1986Westinghouse Electric CorporationElectroencephalographic cap
EP0328890A1 *Jan 18, 1989Aug 23, 1989Hamamatsu Photonics K.K.An apparatus for obtaining information on the interior of an object
WO1989005604A2 *Nov 30, 1988Jun 29, 1989Univ PittsburghAcoustic aneurysm detector and associated method
U.S. Classification600/383, 600/393
International ClassificationA61B5/0476, A61B5/0478
Cooperative ClassificationA61B5/0478
European ClassificationA61B5/0478