Four‐week test‐retest stability of individual differences in the saccadic CNV, two saccadic task parameters, and selected neuropsychological tests

Klein, Ch.; Berg, Patrick

doi:10.1111/1469-8986.3840704

Cited by 32 publications

(14 citation statements)

References 31 publications

(36 reference statements)

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“…To provide an estimate of the differences in magnitude between ICC and Pearson correlations, and to allow compar-isons with previous studies (Campion et al, 1992;Gooding et al, 1994;Klein & Berg, 2001;Schlenker & Cohen, 1995), both coefficients are reported here.…”

Section: Discussionmentioning

confidence: 99%

“…Roy-Byrne et al (1995) reported nonsignificant intraclass correlations (ICC) for the key antisaccade measure, namely, the error rate, probably due to the restricted range of scores (the number of errors ranged between 0 and 2) and the small sample size (N 5 8). Klein and Berg (2001) reported poor reliability of the antisaccade error rate in 20 individuals. Given the proposition that the antisaccade error rate might be a useful schizophrenia endophenotype (Calkins & Iacono, 2000;Clementz, 1998), its temporal stability must first be clarified.…”

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confidence: 97%

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Reliability of smooth pursuit, fixation, and saccadic eye movements

et al. 2003

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The present study investigated the reliability and susceptibility to practice effects of oculomotor tasks. Smooth pursuit, fixation, antisaccade, and prosaccade tasks were administered to 31 healthy participants to assess internal consistency (Cronbach's alpha) and within-session practice effects. Twenty-one of these participants were retested after an average interval of 57.86 days to assess temporal stability and between-session practice effects. Internal consistencies were high for most measures, with few within-session performance changes. Test-retest reliabilities of most measures were good. Between-session practice effects were most consistently observed on the antisaccade task, indicated by reduced error rate and improved spatial accuracy at retest. Magnitude of improvement on these measures was related to performance, indicating that poor performers benefited most from repeated assessment. These findings support the trait nature of oculomotor function and point to the need to take into consideration between-session practice effects on the antisaccade task in longitudinal studies.

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Section: Discussionmentioning

confidence: 99%

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confidence: 97%

Reliability of smooth pursuit, fixation, and saccadic eye movements

et al. 2003

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“…It has been proposed that visual saccades may provide a means to probe components of the cortical network underlying executive function and may provide an objective measure of impaired neural circuitry in these disorders of executive functioning (Manoach et al, 2002; Green et al, 2007). Visual prosaccade tasks provide an advantage over standard neuropsychological tests because a prosaccade task offers a measure of stimulus-initiated reflexive responses and hence is less susceptible to socio-cultural influences (Klein and Berg, 2001). This allows assessment of a broad spectrum of individuals with varying age, ability levels, and cultural backgrounds.…”

Section: Introductionmentioning

confidence: 99%

Differences in MEG gamma oscillatory power during performance of a prosaccade task in adolescents with FASD

Stephen

Coffman

Stone

et al. 2013

Front. Hum. Neurosci.

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Fetal alcohol spectrum disorder (FASD) is characterized by a broad range of behavioral and cognitive deficits that impact the long-term quality of life for affected individuals. However, the underlying changes in brain structure and function associated with these cognitive impairments are not well-understood. Previous studies identified deficits in behavioral performance of prosaccade tasks in children with FASD. In this study, we investigated group differences in gamma oscillations during performance of a prosaccade task. We collected magnetoencephalography (MEG) data from 15 adolescents with FASD and 20 age-matched healthy controls (HC) with a mean age of 15.9 ± 0.4 years during performance of a prosaccade task. Eye movement was recorded and synchronized to the MEG data using an MEG compatible eye-tracker. The MEG data were analyzed relative to the onset of the visual saccade. Time-frequency analysis was performed using Fieldtrip with a focus on group differences in gamma-band oscillations. Following left target presentation, we identified four clusters over right frontal, right parietal, and left temporal/occipital cortex, with significantly different gamma-band (30–50 Hz) power between FASD and HC. Furthermore, visual M100 latencies described in Coffman etal. (2012) corresponded with increased gamma power over right central cortex in FASD only. Gamma-band differences were not identified for stimulus-averaged responses implying that these gamma-band differences were related to differences in saccade network functioning. These differences in gamma-band power may provide indications of atypical development of cortical networks in individuals with FASD.

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Section: Discussionmentioning

confidence: 99%

“…Evidence for this is also limited as the only studies to assess practice effects were completed over shorter periods with intense practicing. [23][24][25] It is not clear that practice effects would persist over 3 months.Antisaccades and self-paced saccades are both volitional. Whole-group analyses also revealed no reduction in the rate of self-paced saccades for children with mCHI, in contrast to studies of adults with mTBI and severe TBI.…”

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confidence: 99%

Changes in saccadic eye movement and memory function after mild closed head injury in children

Phillipou

Douglas

Krieser

et al. 2013

Develop Med Child Neuro

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ABBREVIATIONS BRIEFBehavior Rating Inventory of Executive Function ImPACT Immediate post-concussion assessment and cognitive testing mCHI Mild closed head injury mTBI Mild traumatic brain injury Peabody Picture Vocabulary Test, 4th edition AIM The aim of this study was to determine whether volitional saccadic impairments are present in children with mild closed head injury (mCHI) and whether these deficits are predictive of ongoing cognitive impairment.METHOD We analysed a sample of 26 children with mCHI (20 males, 6 females; mean age 13y 1mo, SD 2y) and 29 age-matched comparison children (20 males, 9 females; mean age 12y 2mo, SD 2y). Participants completed a battery of saccadic eye movement tasks and a set of computer-based cognitive tasks at three time points: within 2 weeks of mCHI, and at 3 months and 6 months. RESULTSThe group with mCHI made fewer errors on the antisaccade task at the first time point and showed increased latencies on prosaccades, correct antisaccades, and corrected antisaccade errors at the third time point (6mo). The group with mCHI also showed poorer performance on the cognitive tasks assessing memory.INTERPRETATION Even very mild, uncomplicated mCHI in children may persistently affect aspects of executive control and visual processing.Mild closed head injury (mCHI), or mild traumatic brain injury (mTBI), occurs when a blow to the head or a forceful motion of the head leads to brief loss of consciousness (<30min) or an alteration in mental state (e.g. confusion or disorientation), or any loss of memory for events before or after the incident. 1 The use of mCHI instead of mTBI does not explicitly imply the presence of brain injury. Although information on mTBI in children is limited, a recently completed prospective population-based study of 0-to 17-year-olds in Sweden yielded an annual incidence of 468 per 100 000.2 Evidence suggests that the prognosis after mTBI is good for most children; however, recent studies have observed that a significant proportion of these children experience ongoing problems. Hawley et al. 3 reported frequent behavioural, emotional, memory, and attention problems in 10% to 18% of children with mTBI, and personality change in 21%. Adults with mTBI often demonstrate difficulties with attention and working memory, and speed of processing (see Frencham et al. 4 for a meta-analysis). Research investigating the cognitive problems experienced by children with mTBI, however, is limited, with highly variable findings between studies. Anderson et al. 5 reported intact memory capacity over the course of both short-and long-term recovery after paediatric mTBI. Ponsford et al. 6 reported no impairment on a range of measures, including memory, attention, and processing speed at 1 week and 3 months after injury. However, Levin et al. 7 identified that children with 'complicated' mTBI, whose computed tomography (CT) revealed brain pathophysiology complications, had significantly poorer episodic memory and slower cognitive processing at short-and long-term follow-u...

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Four‐week test‐retest stability of individual differences in the saccadic CNV, two saccadic task parameters, and selected neuropsychological tests

Cited by 32 publications

References 31 publications

Reliability of smooth pursuit, fixation, and saccadic eye movements

Reliability of smooth pursuit, fixation, and saccadic eye movements

Differences in MEG gamma oscillatory power during performance of a prosaccade task in adolescents with FASD

Changes in saccadic eye movement and memory function after mild closed head injury in children

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