Ineffective leftward search in line bisection and mechanisms of left unilateral spatial neglect

1996 ◽  
Vol 243 (5) ◽  
pp. 381-387 ◽  
Author(s):  
Sumio Ishiai ◽  
Keiko Seki ◽  
Yasumasa Koyama ◽  
Shigeyuki Gono
Keyword(s):  
Line Bisection ◽  
Spatial Neglect ◽  
Unilateral Spatial Neglect

Influence of Colour Lightness Differences in Patients With Left Unilateral Spatial Neglect

2010 ◽  
Vol 16 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Shinsuke Sato ◽  
Akio Tsubahara ◽  
Yoichiro Aoyagi ◽  
Takashi Hiraoka ◽  
Sumire Hasegawa ◽  
...  
Keyword(s):  
Japanese Version ◽  
Line Bisection ◽  
Spatial Neglect ◽  
Unilateral Spatial Neglect ◽  
Laterality Index ◽  
Green Background

AbstractWe used desk-based tasks to evaluate and clarify the effects of colour lightness differences (Liebmann effect) in patients with left unilateral spatial neglect (USN) following stroke. Participants were 30 adults with USN (16 men and 14 women; mean age = 72.3 years, SD = 8.9 years). They took the ‘Letter Cancellation Test’ of the Japanese version of the Behavioral Inattention Test using two types of paper: black letters with a yellow background (‘black on yellow’) and red letters with a green background (‘red on green’). They also took the Line Bisection Test and their laterality index (LI) was also determined. Paired t-tests were computed comparing the LI by colour displays. LI was higher for ‘black on yellow’ than for ‘red on green’ in patients with mild left USN. However, LI for ‘red on green’ was higher in patients with severe left USN. Colour lightness differences are likely on the left side in patients with relatively mild left USN, but not in those with severe left USN.

scholarly journals Alzheimer's patients do not show left unilateral spatial neglect but exhibit peripheral inattention and simplification

2007 ◽  
Vol 1 (4) ◽  
pp. 374-380 ◽  
Author(s):  
Mari Kasai ◽  
Junichi Ishizaki ◽  
Kenichi Meguro
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Line Bisection ◽  
Spatial Neglect ◽  
Test Results ◽  
Unilateral Spatial Neglect ◽  
Complex Figure ◽  
Figure Test ◽  
Category Score

Abstract The Rey-Osterrieth Complex Figure Test (RCFT) is widely used to measure visuoperceptual and visuoconstructional skills, while the Line Bisection (LB) test is commonly employed to assess unilateral spatial neglect (USN). Previous studies have suggested that Alzheimer's disease (AD) patients may suffer from left USN. Objectives: The purpose of this study was to clarify whether left USN occurs in AD. Methods: Forty controls, 40 very mild AD patients and 31 mild/moderate AD patients performed both the RCFT copying and the LB test. Results: The very mild AD and mild/moderate AD groups had lower total RCFT copying scores and also scored lower in the "left" and "detail" categories compared to controls. However, there were no correlations between the left-category score for RCFT and the LB score. Instead, peripheral inattention and simplification patterns were noted. Conclusions: We found that the RCFT copying test is effective for detecting early AD and suggest that AD patients manifest peripheral inattention and simplification but not left USN.

Distinct Processes in Line Bisection According to Severity of Left Unilateral Spatial Neglect

1997 ◽  
Vol 35 (2) ◽  
pp. 271-281 ◽  
Author(s):  
Yasumasa Koyama ◽  
Sumio Ishiai ◽  
Keiko Seki ◽  
Takahiro Nakayama
Keyword(s):  
Line Bisection ◽  
Spatial Neglect ◽  
Unilateral Spatial Neglect

scholarly journals Darkness Improves Line Bisection in Unilateral Spatial Neglect

Cortex ◽  
1992 ◽  
Vol 28 (3) ◽  
pp. 353-358 ◽  
Author(s):  
H. Hjaltason ◽  
R. Tegnér
Keyword(s):  
Line Bisection ◽  
Spatial Neglect ◽  
Unilateral Spatial Neglect

What Is Line Bisection in Unilateral Spatial Neglect?

1998 ◽  
Vol 36 (3) ◽  
pp. 239-252 ◽  
Author(s):  
Sumio Ishiai ◽  
Yasumasa Koyama ◽  
Keiko Seki ◽  
Takahiro Nakayama
Keyword(s):  
Line Bisection ◽  
Spatial Neglect ◽  
Unilateral Spatial Neglect

Unilateral spatial neglect in AD: Significance of line bisection performance

Neurology ◽  
2000 ◽  
Vol 55 (3) ◽  
pp. 364-370 ◽  
Author(s):  
S. Ishiai ◽  
Y. Koyama ◽  
K. Seki ◽  
S. Orimo ◽  
N. Sodeyama ◽  
...  
Keyword(s):  
Line Bisection ◽  
Spatial Neglect ◽  
Unilateral Spatial Neglect

Unilateral spatial neglect in Alzheimer's disease A line bisection study

2009 ◽  
Vol 93 (2-3) ◽  
pp. 219-224 ◽  
Author(s):  
S. Ishiai ◽  
R. Okiyama ◽  
Y. Koyama ◽  
K. Seki
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Line Bisection ◽  
Spatial Neglect ◽  
Unilateral Spatial Neglect

VISUOSPATIAL PROCESSES OF LINE BISECTION AND THE MECHANISMS UNDERLYING UNILATERAL SPATIAL NEGLECT

Brain ◽  
1989 ◽  
Vol 112 (6) ◽  
pp. 1485-1502 ◽  
Author(s):  
SUMIO ISHIAI ◽  
TETSUO FURUKAWA ◽  
HIROSHI TSUKAGOSHI
Keyword(s):  
Line Bisection ◽  
Spatial Neglect ◽  
Unilateral Spatial Neglect

Significance of Paradoxical Leftward Error of Line Bisection in Left Unilateral Spatial Neglect

2001 ◽  
Vol 45 (2) ◽  
pp. 238-248 ◽  
Author(s):  
Sumio Ishiai ◽  
Yasumasa Koyama ◽  
Keiko Seki
Keyword(s):  
Line Bisection ◽  
Spatial Neglect ◽  
Unilateral Spatial Neglect

Combining Language and Space: Word Bisection in Unilateral Spatial Neglect

2012 ◽  
Author(s):  
Laura Veronelli ◽  
Giuseppe Vallar ◽  
Chiara V. Marinelli ◽  
Silvia Primativo ◽  
Lisa S. Arduino
Keyword(s):  
Spatial Neglect ◽  
Unilateral Spatial Neglect
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