A Method for Wandering Trajectory Detection in Video Monitor

2011 ◽  
pp. 116-124 ◽  
Author(s):  
Ruohong Huan ◽  
Zhehu Wang ◽  
Xiaomei Tang ◽  
Yun Pan
Keyword(s):  
Video Monitor

Video monitor measurement of linear visceral dimensions from X-ray images

1999 ◽  
Vol 33 (5) ◽  
pp. 259-261
Author(s):  
L. G. Bezborodko ◽  
V. A. Kondratyuk
Keyword(s):  
Video Monitor ◽  
X Ray

scholarly journals Self-images in the video monitor coded by monkey intraparietal neurons

2001 ◽  
Vol 40 (2) ◽  
pp. 163-173 ◽  
Author(s):  
Atsushi Iriki ◽  
Michio Tanaka ◽  
Shigeru Obayashi ◽  
Yoshiaki Iwamura
Keyword(s):  
Video Monitor

scholarly journals Effect of Vergence on Human Ocular Following Response (OFR)

2009 ◽  
Vol 102 (1) ◽  
pp. 513-522 ◽  
Author(s):  
Anand C. Joshi ◽  
Matthew J. Thurtell ◽  
Mark F. Walker ◽  
Alessandro Serra ◽  
R. John Leigh
Keyword(s):  
Visual Field ◽  
Temporal Frequency ◽  
Open Loop ◽  
Motion Processing ◽  
Sinusoidal Grating ◽  
Video Monitor ◽  
Gaze Shifts ◽  
Ocular Following ◽  
Moving Stimulus ◽  
Ocular Following Response

The human ocular following response (OFR) is a preattentive, short-latency visual-field–holding mechanism, which is enhanced if the moving stimulus is applied in the wake of a saccade. Since most natural gaze shifts incorporate both saccadic and vergence components, we asked whether the OFR was also enhanced during vergence. Ten subjects viewed vertically moving sine-wave gratings on a video monitor at 45 cm that had a temporal frequency of 16.7 Hz, contrast of 32%, and spatial frequency of 0.17, 0.27, or 0.44 cycle/deg. In Fixation/OFR experiments, subjects fixed on a white central dot on the video monitor, which disappeared at the beginning of each trial, just as the sinusoidal grating started moving up or down. We measured the change in eye position in the 70- to 150-ms open-loop interval following stimulus onset. Group mean downward responses were larger (0.14°) and made at shorter latency (85 ms) than upward responses (0.10° and 96 ms). The direction of eye drifts during control trials, when gratings remained stationary, was unrelated to the prior response. During vergence/OFR experiments, subjects switched their fixation point between the white dot at 45 cm and a red spot at 15 cm, cued by the disappearance of one target and appearance of the other. When horizontal vergence velocity exceeded 15°/s, motion of sinusoidal gratings commenced and elicited the vertical OFR. Subjects showed significantly ( P < 0.001) larger OFR when the moving stimulus was presented during convergence (group mean increase of 46%) or divergence (group mean increase of 36%) compared with following fixation. Since gaze shifts between near and far are common during natural activities, we postulate that the increase of OFR during vergence movements reflects enhancement of early cortical motion processing, which serves to stabilize the visual field as the eyes approach their new fixation point.

Spatial perspective choice in ASL

2002 ◽  
Vol 5 (1) ◽  
pp. 3-26 ◽  
Author(s):  
Karen Emmorey ◽  
Barbara Tversky
Keyword(s):  
Cognitive Load ◽  
American Sign Language ◽  
Spatial Information ◽  
English Speakers ◽  
Video Monitor ◽  
Spatial Perspective ◽  
Object Locations ◽  
Shared Space ◽  
Spatial Terms ◽  
Spatial Locations

Two studies investigated the ramifications of encoding spatial locations via signing space for perspective choice in American Sign Language. Deaf signers (“speakers”) described the location of one of two identical objects either to a present addressee or to a remote addressee via a video monitor. Unlike what has been found for English speakers, ASL signers did not adopt their addressee’s spatial perspective when describing locations in a jointly viewed present environment; rather, they produced spatial descriptions utilizing shared space in which classifier and deictic signs were articulated at locations in signing space that schematically mapped to both the speaker’s and addressee’s view of object locations within the (imagined) environment. When the speaker and addressee were not jointly viewing the environment, speakers either adopted their addressee’s perspective via referential shift (i.e. locations in signing space were described as if the speaker were the addressee) or speakers expressed locations from their own perspective by describing locations from their view of a map of the environment and the addressee’s position within that environment. The results highlight crucial distinctions between the nature of perspective choice in signed languages in which signing space is used to convey spatial information and spoken languages in which spatial information is conveyed by lexical spatial terms. English speakers predominantly reduce their addressee’s cognitive load by adopting their addressee’s perspective, whereas in ASL shared space can be used (there is no true addressee or speaker perspective) and in other contexts, reversing speaker perspective is common in ASL and does not increase the addressee’s cognitive load.

Body Shape Perception and its Disturbance in Anorexia Nervosa

1984 ◽  
Vol 144 (2) ◽  
pp. 167-171 ◽  
Author(s):  
S. W. Touyz ◽  
P. J. V. Beumont ◽  
J. K. Collins ◽  
M. McCabe ◽  
J. Jupp
Keyword(s):  
Anorexia Nervosa ◽  
Body Shape ◽  
Shape Perception ◽  
Video Monitor ◽  
Normal Body ◽  
Female Patients

SummaryThe perception of body shape was studied in 15 female patients with anorexia nervosa and 15 age matched controls. A lens was used which could be manipulated to cause a horizontal distortion of an image projected onto a video monitor. The patients showed a greater tendency to over- and under-estimate their present body shape than did the controls. Further, the patients' desired body shape was significantly thinner than that of controls, as was their estimation of what constitutes a normal body shape. These findings are discussed in relation to the literature and it is suggested that they may have important implications for treatment.

scholarly journals Usage of Forceps and Dormia basket in the Management of Ureteric Stone: Comparison between Holmium: YAG Laser and Pneumatic Lithotripsy in a Referral Hospital, Bangladesh

2019 ◽  
Vol 48 (1) ◽  
pp. 26-30
Author(s):  
Md Ashif Chowdhury ◽  
Shahidul Islam ◽  
SM Shameem Waheed ◽  
Faruk Hossain ◽  
AKM Mashiul Munir ◽  
...  
Keyword(s):  
Laser Lithotripsy ◽  
Military Hospital ◽  
Video Monitor ◽  
Ureteric Stone ◽  
Yag Laser ◽  
Pneumatic Lithotripsy ◽  
Dormia Basket ◽  
Proximal Migration ◽  
Wide Range

Now lithoclast has become more popular tool than various intracorporeal lithotripters for the treatment of ureteric stones. Recently the Holmium:YAG laser has been used with a wide range of potential urological applications, including intracorporeal lithotripsy of ureteric stones. This study was conducted to compare the use of Forceps and Dormia basket in the management of ureteric stone between Holmium: YAG Laser and Pneumatic Lithotripsy. It was a longitudinal follow-up comparative study conducted at Combined Military Hospital, Dhaka. All the respondents were admitted patients in Combined Military Hospital Dhaka, under Urology Ward. A total of 100 patients were enrolled for this study under convenient purposive sampling method. They all were admitted with the complaints of upper ureteric stone who underwent ureteroscopic lithotripsy from October 2010 to September 2012. In 50 patients, Laser Lithotripsy (LL) was used and in other 50 patients Pneumatic Lithotripsy (PL) was used. Same ureteroscope, video monitor, baskets and irrigation devices were used in both the samples. Patients were followed up after 1st and 3rd months interval. Lithotripsy follow-up was done with radiograph and ultrasonography of kidney, ureter and bladder.  Patients with migrated fragments or incomplete clearance were underwent an auxiliary procedure such as shock wave lithotripsy. Mean stone size was 1.36 ± 0.36 cm in group Laser lithotripsy (LL) and 1.37± 0.36 cm in group Pneumatic lithotripsy (PL). The immediate stone clearance rate was significantly higher in Group LL (94.0%) than Group PL (76.0%). Proximal migration of fragments were 6.0% in LL group and 24.0% in PL group. Use of stone retrieval equipment (baskets, forceps) was 16.0% and 64.0% in LL and PL group respectively (p<0.05). On the other hand stone fragments clearance requiring auxiliary procedures were 6% and 24% in LL and PL group respectively. The mean lithotripsy time was 40.46 ± 19.25 min and 36.86 ± 14.83 min the LL and PL group respectively. Use of stone retrieval equipment(baskets, forceps) was significantly lower in Holmium: YAG assisted ureteroscopy than pneumatic lithotripsy group. Bangladesh Med J. 2019 Jan; 48 (1): 26-30

Human factors design of a video monitor emulator and display (VMED) for visually impaired computer users

1986 ◽  
Vol 10 (3) ◽  
pp. 255-264
Author(s):  
Gary W. Kelly ◽  
David A. Ross ◽  
Laura E. Moody
Keyword(s):  
Human Factors ◽  
Visually Impaired ◽  
Computer Users ◽  
Video Monitor

scholarly journals HYBRID VISUAL-DRIVEN DECISION SUPPORT SYSTEM IN VIDEO MONITOR MANUFACTURING

2005 ◽  
Vol 38 (1) ◽  
pp. 372-377
Author(s):  
F.M. Kawaoku ◽  
J.E. Araujo ◽  
K.H. Kienitz ◽  
L. Mesquita
Keyword(s):  
Decision Support ◽  
Decision Support System ◽  
Support System ◽  
Video Monitor
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