Table 1

Results obtained in different studies on the Subjective Visual Vertical (SVV) or Subjective Visual Horizontal (SVH).

Authors

Sample

Physical size

Distance

Angular size

Orientation

Tilt

Results


Wade (1969)

10 subjects, sex no specified (ns)

91.5 cm et 15.5 cm (2.1 cm wide)

180 cm

28.52° et 4.93°

SVV

± 30° (Head Tilt)

E-effect on average

Decrease of the E-effect with large bar


De Graaf et al. (1992)

7 men, 5 women (age between 19-32 yr)

50 cm

125 cm

22.6°

SVH

0°, ± 5°, ± 10°, ± 15°, ± 20°, ± 25° (Body Tilt)

On average, no deviation from upright.

5 subjects had E-effect, 3 others an A-effect, the remaining 4 subjects were not easily determined: 3 of them tended to show an E-effect and 1 tended to show an A- effect


Tribukait et al. (1996)

39 men and 36 women (37 ans), 3 were excluded but their sex was not specified

ns

ns

6.5°

SVH

0°, ± 10°, ± 20°, ± 30 (Body Tilt)

High between-subjects variability but E-effect on average


Guerraz et al. (1998)

35 women and 34 men (age between 18 and 22 yr)

21 cm

ns

20°

SVV

± 28° (Head Tilt)

A-effect


Van Beuzekom & Van Gisbergen (2000)

5 men and 1 woman (age between 20 and 54 yr)

ns

100 cm

17°

SVV and SVH

Between -180° and +180° with a 10° interval (Body Tilt)

High between-subjects variability, for small angle of tilt, some subjects show E-effects, others, A-effects


Guerraz et al. (2000)

N = 20 sex no specified (age between 18 and 22 yr)

21 cm

60 cm

19.85°

SVV

0° ± 7, ± 14, ± 21, ± 28, ± 35° (Head tilt)

A-effect on average from 7° to 35° of head-tilt


Mast (2000)

1 man and 3 women (age between 26 and 32 yr)

ns

120 cm

SVV

Angles between 0° and 180° at each 15° intervals

0°, 15°, 30, 45°...180° (Body Tilt)

A small (no precise value) A-effect for tilt angle up to 135°


Luyat & Gentaz (2002)

7 women and 2 men (mean age = 22.4 yr)

27 cm

68 cm

22.46°

SVV

± 45°

A-effect


Trousselard et al. (2003)

5 women and 11 men (mean age: 28 yr)

32 cm long (1.5 cm wide)

55 cm

32.44°

SVV

0°, ± 15°, ± 30°, ± 45°, ± 60°, ± 75°, ± 90°, ± 105° (Body Tilt)

A-effect


Kaptein & Van Gisbergen (2004)

6 men (age between 23-59 yr)

ns

90 cm

20°

SVV

Angles between 0° and 360° at each 30° intervals

0°, 30, 60°, 90°...360° (Body Tilt)

Limited time of adjustment (30 sec)

For angle ≤ 60°: 2/6: E-effect, 4 gave veridical response or small A-effect (no precise value)


ns = no-specified

Luyat et al. BMC Neuroscience 2012 13:28   doi:10.1186/1471-2202-13-28

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