Residual rightward attentional bias after apparent recovery from right hemisphere damage: implications for a multicomponent model of neglect.

Mattingley, Jason B.; Bradshaw, John L.; Bradshaw, Judy A.; Nettleton, Norman C.

doi:10.1136/jnnp.57.5.597

Cited by 104 publications

(71 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To conclude, the present data are consistent with other converging evidence indicating that several attentional mechanisms interact in determining an overt hemineglect behaviour (Gainotti et al, 1991;Karnath, 1988;Mattingley et al, 1994). An impaired automatic orienting of attention appears to constitute the core deficit, as shown by its persistence even in patients clinically recovered from neglect.…”

Section: Discussionsupporting

confidence: 92%

“…Indeed, Pizzamiglio, Antonucci, Judica et al (1992) found that performance on a task based on the Wundt-Jastrow illusion was only slightly improved after neglect rehabilitation, while reading and cancellation tests showed more substantial improvements. Similar results were obtained in a longitudinal study of neglect patients who had not reccived specific rehabilitation (Mattingley et al, 1994). Left neglect patients were tested both shortly after the stroke and 12 months later.…”

Section: Introductionsupporting

confidence: 74%

“…Nevertheless, evidence is accumulating that subtle spatal deficits persist in patients who had recovered from neglect (Campbell and Oxbury, 1976;Friedrich and Margolin, 1993;Goodale, Milner, Jakobson et al, 1990;Kaplan, Cohen, Rosengart et al, 1995;Karnath, 1988;Mattingley, Bradshaw, Bradshaw et al, 1994;Posner, Walker, Friedrich et al, 1984). Karnath (1988) hypothesised a multi-component model of neglect consisting of an initial, automatic orienting of attention toward the ipsilesional side, an impairment in reorienting attention toward the contralesional side and a more general, non-directional attentional deficit.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Novelty Effect in Recovered Hemineglect

Bartolomeo

1997

Cortex

View full text Add to dashboard Cite

Left neglect patients, patients who had recovered from left neglect and control subjects performed a task of simple motor reaction times (RTs) to lateralised visual stimuli. Neglect and recovered patients were slower than controls on left-sided targets. To explore the time course of the allocation of attention across space, an analysis of responses as a function of the serial order of the trials was performed. While neglect patients' performance did not substantially change over time, recovered patients showed a stereotyped 'novelty effect', consisting of larger left/right RT differences at the beginning of the task than at the end of it. To explain this practice-related change, a trade-off is hypothesised between the process of learning the motor task and the mechanisms involved in recovery from neglect, such as the reorienting of attention toward the contralesional side following the initial ipsilesional orienting. A possible role is proposed for the prefrontal cortex as the crucial neural structure that mediates both processes.

show abstract

Section: Discussionsupporting

confidence: 92%

Section: Introductionsupporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Novelty Effect in Recovered Hemineglect

Bartolomeo

1997

Cortex

View full text Add to dashboard Cite

show abstract

“…The early rightward orientation of attention may be observed as a residual sign of spatial bias in patients who had recovered from left neglect [98,107,108]. Thus, to produce clinical neglect, either the initial rightward orienting bias must be present in a certain critical amount, or it must be accompanied by other component de®cits.…”

Section: A Directional De®cit Of Disengaging Attentionmentioning

confidence: 99%

Orienting of attention in left unilateral neglect

Bartolomeo

Chokron

2002

Neuroscience & Biobehavioral Reviews

284

137

View full text Add to dashboard Cite

After right posterior brain damage, patients may ignore events occurring on their left, a condition known as unilateral neglect. Although de®cits at different levels of impairment may be at work in different patients, the frequency and severity of attentional problems in neglect patients have been repeatedly underlined. Recent advances in the knowledge of the mechanisms of spatial attention in normals may help characterizing these de®cits. The present review focuses on studies exploring several aspect of attentional processing in unilateral neglect, with particular reference to the dichotomy between`exogenous', or stimulus-related, and`endogenous', or strategy-driven, orienting of attention. A large amount of neuropsychological evidence suggests that a basic mechanism leading to left neglect behavior is an impaired exogenous orienting toward left-sided targets. In contrast, endogenous processes seem to be relatively preserved, if slowed, in left unilateral neglect. Other component de®cits, such as a general slowing of the operations of spatial attention, might contribute to neglect behavior. These results are presented and discussed, and their implications for hemispheric specialization in attentional orienting and for the mechanisms of visual consciousness are explored. q

show abstract

“…Previous clinical studies (Azouvi et al, 2002(Azouvi et al, , 2006Jalas, Lindell, Brunila, Tenovuo, & Ha¨ma¨la¨inen, 2002;Mattingley, Bradshaw, Bradshaw, & Nettleton, 1994;Nurmi et al, 2010;Samuelsson, Hjelmqvist, Naver, & Blomstrand, 1996) have found that stroke patients with or without VN show pathological attention processes, including a right-to-left visual scanning strategy. In the study of Jalas et al (2002) the starting point in different cancellation tasks was designated right or left with respect to the center of the stimulus sheet.…”

Section: Introductionmentioning

confidence: 97%

Recovery From Visual Neglect After Right Hemisphere Stroke: Does Starting Point in Cancellation Tasks Change After 6 Months?

Kettunen¹,

Nurmi²,

Dastidar³

et al. 2012

The Clinical Neuropsychologist

View full text Add to dashboard Cite

In the acute phase of stroke, patients with left visual neglect (VN) automatically orient to the right hemispace. This study examined the presence of rightward bias after right hemisphere stroke within 10 days of stroke onset and after 6 months. Our sample comprised 43 patients and 49 healthy controls. Presence of VN was evaluated with the six conventional subtests of the Behavioral Inattention Test (BITC). Starting points were determined in three BITC cancellation tasks by measuring the distance between the starting point and the median line of the stimulus sheet in centimeters. Activities of daily living (ADL) were assessed with the Barthel Index. At baseline VN patients showed more robust rightward bias than patients without VN. The magnitude of rightward bias decreased clearly in the VN patients at follow-up. A favorable ADL outcome was observed in 90% of the patients with VN and in all of the patients without VN. The magnitude of rightward bias differed clearly between the patient groups and controls. Our result implies that VN was likely to have improved as measured by BITC sum scores, but symptoms of rightward attention bias were still detected. We therefore suggest that, for clinical purposes, it is important that attention bias is measured accurately after right hemisphere stroke.Keywords: Rightward bias; Recovery; Stroke; Visual neglect. INTRODUCTIONVisual neglect (VN) is a disabling disorder that frequently occurs after right hemisphere stroke (Bowen, McKenna, & Tallis, 1999;Ringman, Saver, Woolson, Clarke, & Adams, 2004), suggesting a special role for the right hemisphere in spatial attention (Halligan, Fink, Marshall, & Vallar, 2003; Heilman, Watson, & Valenstein, 2003;Shulman et al., 2010). Neglect refers to failure to report, respond, or orient to stimuli on the contralesional side of space that cannot be accounted for by primary sensory or motor deficits (Halligan, Cockburn, & Wilson, 1991; Heilman et al., 2003;Robertson & Halligan, 1999). One prominent theory of this asymmetry in VN is that the left hemisphere controls shifts of attention in the rightward direction, while the right hemisphere controls shifts of attention in either direction (Mesulam, 1981). In the acute phase of stroke, patients with left visual neglect (VN) automatically orient to the right hemispace. This study examined the presence of rightward bias after right hemisphere stroke within 10 days of stroke onset and after 6 months. Our sample comprised 43 patients and 49 healthy controls. Presence of VN was evaluated with the six conventional subtests of the Behavioral Inattention Test (BITC). Starting points were determined in three BITC cancellation tasks by measuring the distance between the starting point and the median line of the stimulus sheet in centimeters. Activities of daily living (ADL) were assessed with the Barthel Index. At baseline VN patients showed more robust rightward bias than patients without VN. The magnitude of rightward bias decreased clearly in the VN patients at follow-up. A favorable ADL outcome was...

show abstract

Residual rightward attentional bias after apparent recovery from right hemisphere damage: implications for a multicomponent model of neglect.

Cited by 104 publications

References 51 publications

The Novelty Effect in Recovered Hemineglect

The Novelty Effect in Recovered Hemineglect

Orienting of attention in left unilateral neglect

Recovery From Visual Neglect After Right Hemisphere Stroke: Does Starting Point in Cancellation Tasks Change After 6 Months?

Contact Info

Product

Resources

About