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171


The New MULES: A Sideline-Friendly Test of Rapid Picture Naming for Concussion [Meeting Abstract]

Akhand, Omar; Galetta, Matthew; Hasanaj, Lisena; Cobbs, Lucy; Webb, Nikki; Brandt, Julia; Amorapanth, Prin; Rizzo, John-Ross; Serrano, Liliana; Nolan, Rachel; Rucker, Janet; Silverio, Arlene; Jordan, Barry; Galetta, Steven; Balcer, Laura
ISI:000453090801159
ISSN: 0028-3878
CID: 3562002

Mobile Universal Lexicon Evaluation System (MULES) in MS: Evaluation of a New Visual Test of Rapid Picture Naming [Meeting Abstract]

Seay, Meagan; Akhand, Omar; Cobbs, Lucy; Hasanaj, Lisena; Amorapanth, Prin; Rizzo, John-Ross; Nolan, Rachel; Serrano, Liliana; Jordan, Barry; Rucker, Janet; Galetta, Steven; Balcer, Laura
ISI:000453090805232
ISSN: 0028-3878
CID: 3561682

THE ROLE OF NEURO-OPHTHALMOLOGY IN ATYPICAL PARKINSONISM: CLINICAL FINDINGS ON A STANDARDIZED OCULAR MOTOR EXAM [Meeting Abstract]

Seay, Meagan; Lee, Andrea; Frucht, Steven; Rucker, Janet
ISI:000453090804354
ISSN: 0028-3878
CID: 3561732

'Sandbagging' a Vision Test for Concussion-based Sideline Assessment: An Eye Movement Investigation Objectively Reveals the 'Gamers' Strategies [Meeting Abstract]

Rucker, Janet; Hasanaj, Lisena; Rizzo, John-Ross; Hudson, Todd; Dai, Weiwei; Martone, John; Chaudhry, Yash; Ihionu, Oluchi; Selesnick, Ivan; Balcer, Laura; Galetta, Steven
ISI:000453090801144
ISSN: 0028-3878
CID: 3561472

Relation of Quantitative Eye Movements with Cognitive Dysfunction in Patients with Concussion [Meeting Abstract]

Gold, Doria; Martone, John; Lee, Yuen Shan Christine; Childs, Amanda; Matsuzawa, Yuka; Fraser, Felicia; Ricker, Joseph; Dai, Wei-Wei; Rizzo, John-Ross; Hudson, Todd; Selesnick, Ivan; Galetta, Steven; Balcer, Laura; Rucker, Janet
ISI:000453090805233
ISSN: 0028-3878
CID: 3561672

Rapid Number Naming and Quantitative Eye Movements May Reflect Contact Sport Exposure in a Collegiate Ice Hockey Cohort

Hasanaj, Lisena; Thawani, Sujata P; Webb, Nikki; Drattell, Julia D; Serrano, Liliana; Nolan, Rachel C; Raynowska, Jenelle; Hudson, Todd E; Rizzo, John-Ross; Dai, Weiwei; McComb, Bryan; Goldberg, Judith D; Rucker, Janet C; Galetta, Steven L; Balcer, Laura J
BACKGROUND: The King-Devick (K-D) test of rapid number naming is a reliable visual performance measure that is a sensitive sideline indicator of concussion when time scores worsen (lengthen) from preseason baseline. Within cohorts of youth athletes <18 years old, baseline K-D times become faster with increasing age. We determined the relation of rapid number-naming time scores on the K-D test to electronic measurements of saccade performance during preseason baseline assessments in a collegiate ice hockey team cohort. Within this group of young adult athletes, we also sought to examine the potential role for player age in determining baseline scores. METHODS: Athletes from a collegiate ice hockey team received preseason baseline testing as part of an ongoing study of rapid rink-side performance measures for concussion. These included the K-D test (spiral-bound cards and tablet computer versions). Participants also performed a laboratory-based version of the K-D test with simultaneous infrared-based video-oculographic recordings using an EyeLink 1000+. This allowed measurement of the temporal and spatial characteristics of eye movements, including saccadic velocity, duration, and intersaccadic interval (ISI). RESULTS: Among 13 male athletes, aged 18-23 years (mean 20.5 +/- 1.6 years), prolongation of the ISI (a combined measure of saccade latency and fixation duration) was the measure most associated with slower baseline time scores for the EyeLink-paired K-D (mean 38.2 +/- 6.2 seconds, r = 0.88 [95% CI 0.63-0.96], P = 0.0001), the K-D spiral-bound cards (36.6 +/- 5.9 seconds, r = 0.60 [95% CI 0.08-0.87], P = 0.03), and K-D computerized tablet version (39.1 +/- 5.4 seconds, r = 0.79 [95% CI 0.42-0.93], P = 0.001). In this cohort, older age was a predictor of longer (worse) K-D baseline time performance (age vs EyeLink-paired K-D: r = 0.70 [95% CI 0.24-0.90], P = 0.008; age vs K-D spiral-bound cards: r = 0.57 [95% CI 0.03-0.85], P = 0.04; age vs K-D tablet version: r = 0.59 [95% CI 0.06-0.86], P = 0.03) as well as prolonged ISI (r = 0.62 [95% CI 0.11-0.87], P = 0.02). Slower baseline K-D times were not associated with greater numbers of reported prior concussions. CONCLUSIONS: Rapid number-naming performance using the K-D at preseason baseline in this small cohort of collegiate ice hockey players is best correlated with ISI among eye movement-recording measures. Baseline K-D scores notably worsened with increasing age, but not with numbers of prior concussions in this small cohort. While these findings require further investigation by larger studies of contact and noncontact sports athletes, they suggest that duration of contact sports exposure may influence preseason test performance.
PMCID:6022287
PMID: 28746058
ISSN: 1536-5166
CID: 2654292

Mobile Universal Lexicon Evaluation System (MULES) in MS: Evaluation of a New Visual Test of Rapid Picture Naming [Meeting Abstract]

Seay, Meagan; Akhand, Omar; Cobbs, Lucy; Hasanaj, Lisena; Amorapanth, Prin; Rizzo, John-Ross; Nolan, Rachel; Serrano, Liliana; Jordan, Barry; Rucker, Janet; Galetta, Steven; Balcer, Laura J.
ISI:000429034600043
ISSN: 1352-4585
CID: 3039272

The effect of linguistic background on rapid number naming: implications for native versus non-native English speakers on sideline-focused concussion assessments

Rizzo, John-Ross; Hudson, Todd E; Amorapanth, Prin X; Dai, Weiwei; Birkemeier, Joel; Pasculli, Rosa; Conti, Kyle; Feinberg, Charles; Verstraete, Jan; Dempsey, Katie; Selesnick, Ivan; Balcer, Laura J; Galetta, Steven L; Rucker, Janet C
OBJECTIVE:To determine if native English speakers (NES) perform differently compared to non-native English speakers (NNES) on a sideline-focused rapid number naming task. A secondary aim was to characterize objective differences in eye movement behaviour between cohorts. BACKGROUND:The King-Devick (KD) test is a rapid number-naming task in which numbers are read from left-to-right. This performance measure adds vision-based assessment to sideline concussion testing. Reading strategies differ by language. Concussion may also impact language and attention. Both factors may affect test performance. METHODS:Twenty-seven healthy  NNES and healthy NES performed a computerized KD test under high-resolution video-oculography.  NNES also performed a Bilingual Dominance Scale (BDS) questionnaire to weight linguistic preferences (i.e., reliance on non-English language(s)). RESULTS:Inter-saccadic intervals were significantly longer in  NNES (346.3 ± 78.3 ms vs. 286.1 ± 49.7 ms, p = 0.001), as were KD test times (54.4 ± 15.1 s vs. 43.8 ± 8.6 s, p = 0.002). Higher BDS scores, reflecting higher native language dominance, were associated with longer inter-saccadic intervals in  NNES. CONCLUSION/CONCLUSIONS:These findings have direct implications for the assessment of athlete performance on vision-based and other verbal sideline concussion tests; these results are particularly important given the international scope of sport. Pre-season baseline scores are essential to evaluation in the event of concussion, and performance of sideline tests in the athlete's native language should be considered to optimize both baseline and post-injury test accuracy.
PMID: 30182749
ISSN: 1362-301x
CID: 3271312

Validity of low-resolution eye-tracking to assess eye movements during a rapid number naming task: performance of the eyetribe eye tracker

Raynowska, Jenelle; Rizzo, John-Ross; Rucker, Janet C; Dai, Weiwei; Birkemeier, Joel; Hershowitz, Julian; Selesnick, Ivan; Balcer, Laura J; Galetta, Steven L; Hudson, Todd
OBJECTIVE:To evaluate the performance of the EyeTribe compared to the EyeLink for eye movement recordings during a rapid number naming test in healthy control participants. BACKGROUND:With the increasing accessibility of portable, economical, video-based eye trackers such as the EyeTribe, there is growing interest in these devices for eye movement recordings, particularly in the domain of sports-related concussion. However, prior to implementation there is a primary need to establish the validity of these devices. One current limitation of portable eye trackers is their sampling rate (30-60 samples per second, or Hz), which is typically well below the benchmarks achieved by their research-grade counterparts (e.g., the EyeLink, which samples at 500-2000 Hz). METHODS:We compared video-oculographic measurements made using the EyeTribe with those of the EyeLink during a digitized rapid number naming task (the King-Devick test) in a convenience sample of 30 controls. RESULTS:EyeTribe had loss of signal during recording, and failed to reproduce the typical shape of saccadic main sequence relationships. In addition, EyeTribe data yielded significantly fewer detectable saccades and displayed greater variance of inter-saccadic intervals than the EyeLink system. CONCLUSION/CONCLUSIONS:Caution is advised prior to implementation of low-resolution eye trackers for objective saccade assessment and sideline concussion screening.
PMCID:6028183
PMID: 29211506
ISSN: 1362-301x
CID: 2885972

Neuro-ophthalmologic disorders following concussion

Debacker, Julie; Ventura, Rachel; Galetta, Steven L; Balcer, Laura J; Rucker, Janet C
Visual symptoms, such as photophobia and blurred vision, are common in patients with concussion. Such symptoms may be accompanied by abnormalities of specific eye movements, such as saccades and convergence, or accommodation deficits. The high frequency of visual involvement in concussion is not surprising, since more than half of the brain's pathways are dedicated to vision and eye movement control. These areas include many that are most vulnerable to head trauma, including the frontal and temporal lobes. Vision and eye movement testing is important at the bedside and on the sidelines of athletic events, where brief performance measures that require eye movements, such as rapid number naming, are reliable and sensitive measures for concussion detection. Tests of vision and eye movements are also being explored clinically to identify and monitor patients with symptoms of both sport- and nonsport-related concussion. Evaluation of vision and eye movements can assist in making important decisions after concussion, including the prognosis for symptom recovery, and to direct further visual rehabilitation as necessary.
PMID: 30482342
ISSN: 0072-9752
CID: 3500592