electrode arrangements

easy-cap

For latest information see www.easycap.de

Electrode Arrangements The modular easy-cap system allows a multitude of different electrode arrangements for many electrophysiological problems. This booklet shows different electrode placements which have proven to be useful: • some arrangements using 10% positions

for EEG machines with 19, 32, 64, 96 or 128 channels.

• equidistantly spaced spherical electrode placements which have been computed by means of triangulation of real three dimensional head surfaces.

• two-in-one montages, concentric electrode placements, arrangements for special investigations. Contents: Page

American versus german electrode position nomenclature 3 10%-arrangements 4 Equidistant arrangements 10 Miscellaneous arrangements 14 Theta/Phi- and XYZ-Coordinates of some arrangements 17

Moreover we will make further electrode arrangements according to your needs.

eMont03, Ver.1.1 24.10.03 /20

10%-Electrode System and Electrode Position Nomenclature of the American Electroencephalographic Society

FC6FC2 FC4

F6F4F2

AF4

FT8

Fp2

AF8

F8

F10

FT10

FC5 FC1FC3

F5 F3 F1

AF3

FT7

Fp1

AF7

F7

F9

FT9

FCz

AFz

Fz

Fpz

CP6CP2 CP4

P6P4P2

PO4

C6C2 C4 T8

TP8

O2

PO8

P8

O10

PO10

P10

TP10

CP5 CP1CP3

P5 P3 P1

PO3

C5 C1C3T7

TP7

O1

PO7

P7

O9

PO9

P9

TP9

CPz

POz

Pz

Oz

Iz

Cz

Montage No. 1 mostly equidistant, inter electrode distance 28 bis 38 mm (given a head circumference of 58 cm). This graph shows all 10% electrode positions which can be mounted in a subtemporal cap. The inner circle encompasses the area of the int. 10/20-system, the outer circle encompasses another 10% from the canthi to the inion. A cap with 74 adaptors mounted like this enables to work with the defined 10% positions in a great variety of investigations. The differences to the german electrode nomenclature is demonstrated on the next page. After that the american names will be used throughout this booklet.

Prices without V.A.T., custom fees or shipping.

* Consists of: Cap(s) with adaptors, 1 Set of Electrodes, Chest belt(s), Electrolyte gel, Consumables

With 1 cap € 2.114,20 With 2 caps € 2.527,00 With 3 caps € 2.857,80

Montage No. 1, basic version*: Easy Cap Ready-to-use complete system,

eMont03, Ver.1.1 24.10.03 /20

Differences between the 10%-Systems of the American Electroencephalographic Society and the

T1 T2

A2

R-PR L-PR

PO4

FpF4

FC5 FC1FC3

F5 F3 F1

AF3

FT7

Fp1

AF7

F7

F9

FT9

FCz

AFz

Fz

Fpz

CP5 CP1CP3

P5 P3 P1

PO3

C5 C1C3 T7

TP7

O1

PO7

P7

O9

PO9

P9

CPz

POz

Pz

Oz

Iz

Cz

FC6FC2 FC4

F6F4F2

FpF2

T2.4

Fp2

FpF6

F8

CP6CP2 CP4

P6P4P2

PO2

C6C2 C4 T4

T4.6

O2

T6.8

T6

A1TP9

Deutsche EEG-Gesellschaft This graph shows the american electrode positions and their names on the left side, the german ones on the right side. The differing positions are marked in black, the differing names are in bold print. Note: Meanwhile the Deutsche EEG Gesellschaft has adopted the american nomenclature, which is now the only correct system for publications. Yet, due to its wide spreading, this comparison might stay useful. The grey electrode positions designate some further useful placements possible in an EASY CAP subtemporal cap.: - T1/T2 are situated above the tip of

temporal lobe, 2/3 the distance between canthus and preauricular point and from there 1 cm down.

- L-PR/ R-PR designate the preauricular points. The exact 10%-positions T9/T10 would come to lie inside the ear.

- A1/A2 stand for the mastoids. These can be either buttoned into the cap or, through the ear slit of the cap, placed right onto the skin. the ear slit of the cap, placed right onto the skin.

eMont03, Ver.1.1 24.10.03 /20

Section 1: 10%-Arrangements

FC6 FC2 FC4

F6 F4 F2

AF4

FT8

Fp2

AF8

F8

F10

FT10

FC5 FC1 FC3

F5 F3 F1

AF3

FT7

Fp1

AF7

F7

F9

FT9

FCz

AFz

Fz

Fpz

CP6 CP2 CP4

P6 P4 P2

PO4

C6 C2 C4 T8

TP8

O2

PO8

P8

O10

PO10

P10

TP10

CP5 CP1 CP3

P5 P3 P1

PO3

C5 C1 C3 T7

TP7

O1

PO7

P7

O9

PO9

P9

TP9

CPz

POz

Pz

Oz

Iz

Cz

International 10/20-system Montage No. 25 This Montage is used in our standardized Ready-to-use Cap Set EC20. 23 electrode positions, mostly equidistant, inter electrode distance 53 to 74 mm (given a head circumference of 58 cm). Unused channels of your amplifier can be used for EOG, ECG or other polygraphies.

Recommendation: Use FCz for Reference and AFz for Ground.


Replace “#” with cap size

EC20-# € 899,00

Extra Cap SU-# € 160,00

Ready-to-use Cap Set for 19/21 Channels Easy Cap EC20: Standardized

eMont03, Ver.1.1 24.10.03 /20

„Extended 10/20-System“ with 30 Channels Montage No. 3

FC6 FC2 FC4

F6 F4 F2

AF4

FT8

Fp2

AF8

F8

F10

FT10

FC5 FC1 FC3

F5 F3 F1

AF3

FT7

Fp1

AF7

F7

F9

FT9

FCz

AFz

Fz

Fpz

CP6 CP2 CP4

P6 P4 P2

PO4

C6 C2 C4 T8

TP8

O2

PO8

P8

O10

PO10

P10

TP10

CP5 CP1 CP3

P5 P3 P1

PO3

C5 C1 C3 T7

TP7

O1

PO7

P7

O9

PO9

P9

TP9

CPz

POz

Pz

Oz

Iz

Cz

This electrode arrangement is the most-spread extension of the 10/20-system. Unused channels of your amplifier can be used for EOG, ECG or other polygraphies.

Recommendation: Use TP9 for Reference and AFz for Ground.





eMont03, Ver.1.1 24.10.03 /20

Small Equidistant 29-Channel Arrangement Montage No. 22

FC6 FC2 FC4

F6 F4 F2

AF4

FT8

Fp2

AF8

F8

F10

FT10

FC5 FC1 FC3

F5 F3 F1

AF3

FT7

Fp1

AF7

F7

F9

FT9

FCz

AFz

Fz

Fpz

CP6 CP2 CP4

P6 P4 P2

PO4

C6 C2 C4 T8

TP8

O2

PO8

P8

O10

PO10

P10

TP10

CP5 CP1 CP3

P5 P3 P1

PO3

C5 C1 C3 T7

TP7

O1

PO7

P7

O9

PO9

P9

TP9

CPz

POz

Pz

Oz

Iz

Cz

mostly equidistant, inter electrode distance 32 to 50 mm (given a head circumference of 58 cm). These 29 electrode positions show the best possible equidistant selection of 10%-positions within the area of the 10/20-system, when only 32 channels are available.

Recommendation: Use FCz for Reference and AFz for Ground. Note: This montage is also used in the 32-Ch BrainCap-MR of BrainProducts.





eMont03, Ver.1.1 24.10.03 /20

Large Equidistant 32-Channel-Montage Montage No. 23

FC6 FC2 FC4

F6 F4 F2

AF4

FT8

Fp2

AF8

F8

F10

FT10

FC5 FC1 FC3

F5 F3 F1

AF3

FT7

Fp1

AF7

F7

F9

FT9

FCz

AFz

Fz

Fpz

CP6 CP2 CP4

P6 P4 P2

PO4

C6 C2 C4 T8

TP8

O2

PO8

P8

O10

PO10

P10

TP10

CP5 CP1 CP3

P5 P3 P1

PO3

C5 C1 C3 T7

TP7

O1

PO7

P7

O9

PO9

P9

TP9

CPz

POz

Pz

Oz

Iz

Cz

mostly equidistant, inter electrode distance 43 to 68 mm (given a head circumference of 58 cm). This electrode arrangement encompasses the largest possible area, recordable from 32 equidistant 10%-positions. One electrode has to be used as recording reference and can be reconstructed offline.

Recommendation: Use Cz for Reference and AFz for Ground.





eMont03, Ver.1.1 24.10.03 /20

Equidistant 34-Channel-Montage for 40-Channel-Amplifiers Montage No. 24

O2

FC6 FC2 FC4

F6 F4 F2

AF4

FT8

Fp2

AF8

F8

F10

FT10

FC5 FC1 FC3

F5 F3 F1

AF3

FT7

Fp1

AF7

F7

F9

FT9

FCz

AFz

Fz

Fpz

CP6 CP2 CP4

P6 P4 P2

PO4

C6 C2 C4 T8

TP8

PO8

P8

O10

PO10

P10

TP10

CP5 CP1 CP3

P5 P3 P1

PO3

C5 C1 C3 T7

TP7

O1

PO7

P7

O9

PO9

P9

TP9

CPz

POz

Pz

Oz

Iz

Cz

This Montage is used in our standardized Ready-to-use Cap Set EC40. mostly equidistant, inter electrode distance 43 to 68 mm (given a head circumference of 58 cm). This electrode arrangement resembles a “15%-System”, covering the largest possible area recordable from caps. In 40-Channel-Amplifiers (e.g. Nihon Kohden or NuAmp) still further channels are available. They can be used to place anatomically defined inferior electrodes, as recommended by Professor Scherg for source analysis/epilepsy diagnostics, or for polygraphic channels.



EC20-# € 1.390,00



eMont03, Ver.1.1 24.10.03 /20

61-Channel Arrangement (Classic 10%-System) Montage No. 11

TP10 TP9

FT10

PO4

AF4AF3

PO3

Fp1 Fp2Fpz

Oz

FC6FC2 FC4

F6F4F2

FT8

AF8

F8

FC5 FC1FC3

F5 F3 F1

FT7

AF7

F7

FCz

AFz

Fz

CP6CP2 CP4

P6P4P2

C6 C2 C4 T8

TP8

O2

PO8

P8

CP5 CP1CP3

P5 P3 P1

C5 C1C3T7

TP7

O1

PO7

P7

CPz

POz

Pz

Cz

mostly equidistant, inter electrode distance 28 to 38 mm (given a head circumference of 58 cm). This classic 10%-system encompasses the same area as the 10/20-system.

Recommendation: Use TP9 for Ref and FT10 for Gnd. Note: This montage is also used in the 64-Ch BrainCap-MR of BrainProducts.





eMont03, Ver.1.1 24.10.03 /20

74-Channel-Arrangment (Full 10%-System) Montage No. 1

FC6FC2 FC4

F6F4F2

AF4

FT8

Fp2

AF8

F8

F10

FT10

FC5 FC1FC3

F5 F3 F1

AF3

FT7

Fp1

AF7

F7

F9

FT9

FCz

AFz

Fz

Fpz

CP6CP2 CP4

P6P4P2

PO4

C6C2 C4 T8

TP8

O2

PO8

P8

O10

PO10

P10

TP10

CP5 CP1CP3

P5 P3 P1

PO3

C5 C1C3T7

TP7

O1

PO7

P7

O9

PO9

P9

TP9

CPz

POz

Pz

Oz

Iz

Cz

This Montage is used in our standardized Ready-to-use Cap Set EC80. mostly equidistant, inter electrode distance 28 bis 38 mm (given a head circumference of 58 cm). This graph shows all 10% electrode positions which can be mounted in a subtemporal cap. The inner circle encompasses the area of the int. 10/20-system, the outer circle encompasses another 10% from the canthi to the inion. A cap with 74 adaptors mounted like this enables to work with the defined 10% positions in a great variety of investigations.

eMont03, Ver.1.1 24.10.03 /20



EC80-# € 2.290,00



128-Channel Arrangement Montage No. 15

F10 F9

128

126

122

103 104 105 106

112 113 114115

116

120 121

125

127

123

117

102101100 99

111110109 108

107

119118

124

94 95 96 97 98

84 85 8687

88

77 78

74

939291 9089

838281 80

79

7675

73

Gnd

FC6FC2 FC4

F6F4F2

AF4

FT8

Fp2

AF8

F8

FT1

FC5 FC1FC3

F5 F3 F1

AF3

FT7

Fp1

AF7

F7

FT9

FCz

AFz

Fz

CP6CP2 CP4

P6P4P2

PO4

C6C2 C4 T8

TP8

O2

PO8

P8

O10

PO1

P10

TP10

CP5 CP1CP3

P5 P3 P1

PO3

C5 C1C3T7

TP7

O1

PO7

P7

O9

PO9

P9

TP9

CPz

POz

Pz

Oz

Iz

Ref

mostly equidistant, inter electrode distance 22 to 31 mm (given a head circumference of 58 cm). The black electrode positions designate the 10%-system. The white ones are placed on the intersection of the lines of equal distances between those electrodes, which lie opposite to each other in the parallelogram.





eMont03, Ver.1.1 24.10.03 /20

Section 2: Equidistant Arrangements Spherical Equidistant 32-Channel Arrangement

26 32

24

25

15

5

23

31

22

13

30

14

12

21

4

17

16

7

6

Gnd

1

2

18

27

19

9

28

8

10

20

3

29

11

Ref

Montage No. 7 Inter electrode distance 53 ± 3 mm (given a head circumference of 58 cm). This arrangement uses 32 equidistant positions out of the 124-channel montage by Gölz & Rösler, Marburg (Montage No. 14). The covered area reaches from Cz (here: Ref) down to a line from the canthi to the inion. Equally spaced electrodes are suitable for all interpolating and localizing methods: brain mapping, dipole analysis, current source densities.





eMont03, Ver.1.1 24.10.03 /20

Equidistant 61-Channel Arrangement Montage No. 10

62

42

9

41

40

39

38

37

36

12

10

11

13

44

19

45

46

47

48

49

50

16

18

17

1553

55

54

52

51

22

26

27

24

25

23

21

4

3

59

57

58

60

61

35

33

29

28

31

30

32

34

8

6

27

56

43

5

14

1

20

Gnd Ref

Inter electrode distance 37 ± 3 mm (given a head circumference of 58 cm). This montage was constructed out of triangles, which were measured on the threedimensional head surface and arrangend around Cz. The electrodes on the central line correspond to those of the 10%-system. Left and right side are symmetric. The covered area reaches down to a line from the canthus through the preauricular point to the inion. The 15 grey electrodes designate a subsample (inter electrode distance ≈ 75mm), that can be used for exploratory investigations. Gnd and Ref in the graph are placed on the right and left cheek. Due to the modular EASY-CAP principle they could be placed everywhere else as well. VEOG and HEOG can be computed from electrodes 50/62 and 61/51.





eMont03, Ver.1.1 24.10.03 /20

Equidistant 88-Channel Arrangement: 88 EEG Channels, Ref on Cz, Gnd on the right cheek Montage No. 16 Inter electrode distance 29 ± 3 mm (given a head circumference of 58 cm). 55 74 56

73 57 54 35 53 36 Electrodes Nos. 75 and 88 are placed on

the canthus, 81 on the inion. 88 75

19 72 58 Gnd52 37 34 20

33 21 7 51 38 8 18 71 59 86 76 32 22 9 1 17

50 39 6 2 Ref 70 31 16 23 60 10

5 3 49 40 85 77 15 4 11 30 24 61 69 14 12 48 41 13 29 25





28 26 84 78 47 62 68 42 27

46 43 45 44 63 67

83 79 64 66 65

82 80 81

eMont03, Ver.1.1 24.10.03 /20

Spherical 124-Channel Arrangement Montage No. 14 Inter electrode distance 27 ± 3 mm (given a head circumference of 58 cm). This montage (Gölz & Rösler, FB Psychologie, Philipps-Uni-versität Marburg) is characterized by near-to-perfect equidistant electrode positions, which were computed from a sphere converged to a realistic head shape This type of electrode arrangement is particularly suited for all interpolating and localizing analysis: brain mapping, dipole analysis and current source densities. The covered area reaches sagittaly from Fpz to the inion. The outer circle runs through the preauricular points. Positon No. 6 is equal to Cz. The ear area was left blank. Since the total number of 128 channels isn’t used up, other parameter, as EOG, ECG or e.g. from a potentiometer may be acquired as well. The electrode numbering was chosen for practical reasons. The numbers form a inward bound spiral on each side of the head. Such, electrodes can be mounted by two persons at the same time, without becoming confused. The grey marked electrode positions constitute a subsample of 32 + 1 equidistant electrodes, which can be used for exploratory purposes or as a montage of its own. (This montage is also depicted on the first page photograph – there without Ref and Gnd.)

eMont03, Ver.1.1 24.10.03 /20

GndRef76

73

74

91

92

75

72

19

16

17

34

35

18

15

36

37

20

21

39

54 52

53

38

23

4024

22

51

26

41

4256 65

61

66

12

48

3113


14


32

With 3 caps € 4.357,00

33

With 2 caps € 3.859,80

50

With 1 cap € 3.280,60

49

Montage No. 14, basic version*:

62

Easy Cap Ready-to-use complete system,

25

47

60

63

67

64

30

45

59

57

11

46

44

58

55

29

28

27

43

93

94

77

78

96

111 109

110

95

80

97

2

1

81

79

108

5

4

83

98

99 113 122

119

106

107

90

89

71

70 88

105

118

123

69

82

104

3

117

120

124

121

87

102

116

114

68

103

101

115

112

86

85

84

100

10

8

9

7

6

Section 3:

„T9“ „T10FC6FC2 FC4

F6F4F2

AF4

FT8

Fp2

AF8

F8

F10

FT1FC5 FC1FC3

F5 F3 F1

AF3

FT7

Fp1

AF7

F7

F9

FT9

FCz

AFz

Fz

Gnd

CP6CP2 CP4

P6P4P2

PO4

C6C2 C4 T8

TP8

O2

PO8

P8

O10

PO1

P10

TP1CP5 CP1CP3

P5 P3 P1

PO3

C5 C1C3 T7

TP7

O1

PO7

P7

O9

PO9

P9

TP9

CPz

POz

Ref

Oz

Iz

Cz

Miscellaneous Arrangements BESA 32-Channel Arrangement for Epilepsy Diagnostics Montage No. 20 This electrode arrangement is recommended in the BESA and FOCUS manuals by Prof. Scherg, Heidelberg, for use in epilepsy diagnostics and for dipole analysis. More information about the software packages FOCUS (EEG analysis) and BESA (source analysis, imaging), e.g. demo versions and descriptions about spatial filters for EOG correction, and the adress of MEGIS Inc. are available at http://www.besa.de





eMont03, Ver.1.1 24.10.03 /20

http://www.besa.de/

Left-Temporo-Parietal/Right-Temporo-Parietal Electrode Placement (LTP-RTP) (also: Wernicke-Left/Wernicke-Right-Electrode Placement (WL/WR) 29-Channel Arrangement for Language Research Montage No. 17 This electrode arrangement sometimes is used in language research (e.g. MPI for Psycholinguistics, Nijmegen). The grey electrodes are standard 10% positions. The black electrodes are placed anterior, above and posterior to Wernicke-Area and defined as follows: LT/RT (Left/Right-Temporal): 33% down from Cz, where 100% is the distance from the left to right auditory meati via Cz. LTP/RTP (Left/Right-Temporo-Parietal): 30% down from Cz and 13% of the distance Nasion-Inion to posterior. LP/RP (Left/Right-Parietal): 50% between LTP and PO7, respectively RTP und PO8.

FC4

F4

AF4

FT8

F8

FC3

F3

AF3

FT7

F7

Ref

Fz

Gnd

Cz

Oz

Pz

RT

LTP RTP

LP RP

With 1 cap € 1.258,00 With 2 caps € 1.527,20 With 3 caps € 1.690,40 * Consists of: Cap(s) with adaptors, 1 Set of Electrodes,

Chest belt(s), Electrolyte gel, Consumables



LT

CP4

P4

C4

PO8

CP3

P3

C3

PO7

eMont03, Ver.1.1 24.10.03 /20

Kombi-Montage: 61-Channel 10%-system & 61-Channel 5%-System Montage No. 19

FC3

Fpz

Gnd

Cz

Ref

FC6FC2 FC4

F6F4F2

AF4

FT8

Fp2

AF8

F8

FC5 FC1

F5F3 F1

AF3

FT7

Fp1

AF7

F7

FCz

AFz

Fz

CP6CP2 CP4

P6P4P2

PO4

C6C2 C4 T8

TP8

O2

PO8

P8

CP5 CP1CP3

P5P3 P1

PO3

C5 C1C3 T7

TP7

O1

PO7

P7

CPz

POz

Pz

Oz

One possibility to apply the modular EASY-CAP-concept is to use different arrangements within one cap. The graphic shows as an example an arrangement by Dr. Th. Weiss, Dept. of Psychology, Friedrich-Schiller-University Jena. On the one hand it comprises a full 10%-system with 61 channels, and alternatively SSEP-recordings from above the sulcus centralis with 61 channels placed according to a 5%-system are possible.

Easy Cap Ready-to-use complete system, Montage No. 19, basic version*:

With 1 cap € 2.117,00 With 2 caps € 2.622,60 With 3 caps € 3.046,20 * Consists of: Cap(s) with adaptors, 1 Set of Electrodes,

Chest belt(s), Electrolyte gel, Consumables


eMont03, Ver.1.1 24.10.03 /20

Section 4: 3D Coordinates

Theta = -, Phi = - Theta = +, Phi = + Theta = -, Phi = + Theta = +, Phi = -

z p θ ϕ x y

Electrode Coordinates can be expressed either as XYZ-Coordinates or as Theta/Phi-Coordinates. Our graphic shows the most common usage of both systems. In the XYZ system, the Z-axis runs through the Vertex, the X-Axis points to the right and the Y-Axis to the front. In the Theta/Phi-System, Theta is the angle between the Z-Axis and the connecting line from the origin of the coordinates and the electrode position. In the left hemisphere Theta is less than zero, in the right hemisphere it is larger. Phi is the angle between

1. the projection of the connecting line from the origin of the coordinates and the electrode position onto the XY-plane

and 2. the X-axis.

Phi is greater zero in the front right and rear left quadrant and smaller zero in the front left and the rear right quadrant. On the following pages exemplary coordinates of the most important electrode positions are given as XYZ- and Theta/Phi-Coordinates. ASCII-Files of these values can be downloaded from www.easycap.de

eMont03, Ver.1.1 24.10.03 /20

http://www.easycap.de/

Theta/Phi-Coordinates of Montage No. 1 (If, as here, no radius is given, a globular surface is assumed.)

FC4FC2 FC6

F6F4F2

AF4

FT8

Fp2

AF8

F8

F10

FT10

FC5 FC1FC3

F5 F3 F1

AF3

FT7

Fp1

AF7

F7

F9

FT9

FCz

AFz

Fz

Fpz

CP6CP2 CP4

P6P4P2

PO4

C6C2 C4 T8

TP8

O2

PO8

P8

O10

PO10

P10

TP10

CP5 CP1CP3

P5 P3 P1

PO3

C5 C1C3 T7

TP7

O1

PO7

P7

O9

PO9

P9

TP9

CPz

POz

Pz

Oz

Iz

Cz

Theta, Phi Theta, PhiFp1 -92, -72 F5 -75, -41Fp2 92, 72 F6 75, 41F3 -60, -51 FC5 -72, -21F4 60, 51 FC6 72, 21C3 -46, 0 C5 -69, 0C4 46, 0 C6 69, 0P3 -60, 51 CP5 -72, 21P4 60, -51 CP6 72, -21O1 -92, 72 P5 -75, 41O2 92, -72 P6 75, -41F7 -92, -36 AF7 -92, -54F8 92, 36 AF8 92, 54T7 -92, 0 FT7 -92, -18T8 92, 0 FT8 92, 18P7 -92, 36 TP7 -92, 18P8 92, -36 TP8 92, -18Fz 46, 90 PO7 -92, 54Cz 0, 0 PO8 92, -54Pz 46, -90 F9 -115, -36F1 -50, -68 F10 115, 36F2 50, 68 FT9 -115, -18FC1 -32, -45 FT10 115, 18FC2 32, 45 TP9 -115, 18C1 -23, 0 TP10 115, -18C2 23, 0 P9 -115, 36CP1 -32, 45 P10 115, -36CP2 32, -45 PO9 -115, 54P1 -50, 68 PO10 115, -54P2 50, -68 O9 -115, 72AF3 -74, -65 O10 115, -72AF4 74, 65 Fpz 92, 90FC3 -53, -33 AFz 69, 90FC4 53, 33 FCz 23, 90CP3 -52, 33 CPz 23, -90CP4 52, -33 POz 69, -90PO3 -74, 65 Oz 92, -90PO4 74, -65 Iz 115, -90

eMont03, Ver.1.1 24.10.03 /20

XYZ-Coordinates of Montage No. 1

FC6FC2 FC4

F6F4F2

AF4

FT8

Fp2

AF8

F8

F10

FT10

FC5 FC1FC3

F5 F3 F1

AF3

FT7

Fp1

AF7

F7

F9

FT9

FCz

AFz

Fz

Fpz

CP6CP2 CP4

P6P4P2

PO4

C6C2 C4 T8

TP8

O2

PO8

P8

O10

PO10

P10

TP10

CP5 CP1CP3

P5 P3 P1

PO3

C5 C1C3 T7

TP7

O1

PO7

P7

O9

PO9

P9

TP9

CPz

POz

Pz

Oz

Iz

Cz

(These numbers imply a radius, and therefore may only be used, when real headsize doesn’t matter.)

x y z x y z

Fp1 -2,7 8,6 3,6 F5 -5,8 5,9 5,8Fp2 2,7

8,6 3,6 F6 5,8 5,9 5,8F3 -4,7 6,2 8,0 FC5 -5,5 3,2 6,6F4 4,7 6,2 8,0 FC6 5,5 3,2 6,6C3 -6,1 0,0 9,7 C5 -7,4 0,0 6,7C4 6,1 0,0 9,7 C6 7,4 0,0 6,7P3 -4,7 -6,2 8,0 CP5 -7,2 -2,7 6,6P4 4,7 -6,2 8,0 CP6 7,2 -2,7 6,6O1 -2,7 -8,6 3,6 P5 -5,8 -5,9 5,8O2 2,7 -8,6 3,6 P6 5,8 -5,9 5,8F7 -6,7 5,2 3,6 AF7 -5,0 7,2 3,6F8 6,7 5,2 3,6 AF8 5,0 7,2 3,6T7 -7,8 0,0 3,6 FT7 -7,6 2,8 3,6T8 7,8 0,0 3,6 FT8 7,6 2,8 3,6P7 -6,7 -5,2 3,6 TP7 -7,6 -2,8 3,6P8 6,7 -5,2 3,6 TP8 7,6 -2,8 3,6Fz 0,0 6,7 9,5 PO7 -5,0 -7,2 3,6Cz 0,0 0,0 12,0 PO8 5,0 -7,2 3,6Pz 0,0 -6,7 9,5 F9 -6,0 4,8 0,0F1 -2,4 6,5 9,0 F10 6,0 4,8 0,0F2 2,4 6,5 9,0 FT9 -6,9 2,5 0,0FC1 -3,0 3,3 11,0 FT10 6,9 2,5 0,0FC2 3,0 3,3 11,0 TP9 -7,3 -2,5 0,0C1 -3,4 0,0 11,6 TP10 7,3 -2,5 0,0C2 3,4 0,0 11,6 P9 -6,3 -4,8 0,0CP1 -3,0 -3,2 11,0 P10 6,3 -4,8 0,0CP2 3,0 -3,2 11,0 PO9 -4,7 -6,7 0,0P1 -2,4 -6,5 9,0 PO10 4,7 -6,7 0,0P2 2,4 -6,5 9,0 O9 -2,5 -8,0 0,0AF3 -3,4 7,0 6,4 O10 2,5 -8,0 0,0AF4 3,4 7,0 6,4 Fpz 0,0 9,0 3,6FC3 -5,5 3,2 9,4 AFz 0,0 8,3 6,9FC4 5,5 3,2 9,4 FCz 0,0 3,4 11,3CP3 -5,3 -3,2 9,4 CPz 0,0 -3,4 11,3CP4 5,3 -3,2 9,4 POz 0,0 -8,3 6,9PO3 -3,4 -7,9 6,4 Oz 0,0 -9,0 3,6PO4 3,4 -7,9 6,4 Iz 0,0 --8,6 0,0

eMont03, Ver.1.1 24.10.03 /20

Theta/Phi-Coordinates of Equidistant Montage No. 10 (Here too a globular surface is assumed.)

42

9

41

40

39

38

37

36

12

10

11

13

44

19

45

46

47

48

49

50

16

18

17

1553

55

54

52

51

22

26

27

24

25

23

21

4

3

59

57

58

60

61

35

33

29

28

31

30

32

34

8

6

27

56

43

5

14

1

20

Theta, Phi Theta, Phi1 0, 0 37 92, 452 23, 90 38 92, 223 23, 30 39 92, 04 23, -30 40 92, -225 23, -90 41 92, -456 -23, 30 42 92, -687 -23, -30 43 92, -908 46, 90 44 -92, 689 46, 66 45 -92, 4510 46, 33 46 -92, 2211 46, 0 47 -92, 012 46, -33 48 -92, -2213 46, -66 49 -92, -4514 46, -90 50 -92, -6815 -46, 66 51 115, 3516 -46, 33 52 115, 1017 -46, 0 53 115, -1518 -46, -33 54 115, -4019 -46, -66 55 115, -6520 69, 90 56 115, -9021 69, 66 57 -115, 6522 69, 42 58 -115, 4023 69, 18 59 -115, 1524 69, -6 60 -115, -1025 69, -30 61 -115, -3526 69, -54 27 69, -78 28 -69, 78 29 -69, 54 30 -69, 30 31 -69, 6 32 -69, -18 33 -69, -42 34 -69, -66 35 92, 90 36 92, 68

eMont03, Ver.1.1 24.10.03 /20

electrode arrangements

Documents