Optic ataxia and the function of the dorsal stream: Contributions to perception and action

Pisella, Laure; Sergio, Lauren E.; Blangero, Annabelle; Torchin, Héloïse; Vighetto, Alain; Rossetti, Yves

doi:10.1016/j.neuropsychologia.2009.06.020

Cited by 116 publications

(91 citation statements)

References 73 publications

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“…More recently, Himmelbach et al [31] have argued that the neglect-specific effects of space representation are specifically linked to lesion sites at the superior temporal gyrus and temporo-parietal junction. They have also suggested that real-time motor control functions, such as those observed in optic ataxia, are supported by the POJ, an argument that aligns with Pisella et al's [27].…”

Section: Hemispatial Neglectmentioning

confidence: 59%

“…More recently, Pisella et al [27] have suggested that the evidence from optic ataxia indicates that one of the key functions of the dorsal stream is the spatial coding of targets in an eyecentered coordinate frame. Pisella et al [27] assign this spatial coding function specifically to the parietal-occipital junction (POJ), a common lesion site in patients with optic ataxia.…”

Section: Optic Ataxiamentioning

confidence: 99%

“…Pisella et al [27] assign this spatial coding function specifically to the parietal-occipital junction (POJ), a common lesion site in patients with optic ataxia. This account helps explain the peripheral target deficit observed in optic ataxia.…”

Section: Optic Ataxiamentioning

confidence: 99%

“…This account helps explain the peripheral target deficit observed in optic ataxia. Pisella et al [27] further argue that dorsal stream function is important for both action and perception. This claim is supported by a recent study [28], which showed that optic ataxia patient I.G.…”

Section: Optic Ataxiamentioning

confidence: 99%

“…Pisella et al [27] also raise the important point that the dorsal stream probably has some role in perception for another reason: Areas within the dorsal stream are thought to be involved in attention orienting, which is fundamental to perceptual processing. Later in the chapter we address the important links between attention, perception, and action.…”

Section: Optic Ataxiamentioning

confidence: 99%

See 4 more Smart Citations

Visual Processing in the Action-Oriented Brain

Cameron¹,

Binsted²

2012

Visual Cortex - Current Status and Perspectives

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Section: Hemispatial Neglectmentioning

confidence: 59%

Section: Optic Ataxiamentioning

confidence: 99%

Section: Optic Ataxiamentioning

confidence: 99%

Section: Optic Ataxiamentioning

confidence: 99%

Section: Optic Ataxiamentioning

confidence: 99%

See 3 more Smart Citations

Visual Processing in the Action-Oriented Brain

Cameron¹,

Binsted²

2012

Visual Cortex - Current Status and Perspectives

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Redefining the Functional Organization of the Planum Temporale Region: Space, Objects, and Sensory–Motor Integration

Hickok¹,

Saberi²

2012

The Human Auditory Cortex

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The prior-antisaccade effect influences the planning and online control of prosaccades

Weiler

Heath

2011

Exp Brain Res

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The latency of a prosaccade is increased when completed following an antisaccade (the prior-antisaccade effect). This finding has been attributed to the inhibition of the oculomotor networks necessary for an antisaccade engendering a persistent response set that delays a to-be-executed prosaccade. The goal of the present investigation was to determine whether the prior-antisaccade effect influences not only the planning but also the control of an unfolding prosaccade trajectory. To accomplish that objective, we employed a task-switching paradigm wherein participants alternated between pro- and antisaccades on every second trial (i.e., AABB paradigm). Importantly, trajectory control was evaluated by computing the proportion of variance (R2 values) explained by the spatial position of the eye at decile increments of movement time relative to the response's ultimate movement endpoint: small R2 values indicate a response that unfolds with error-reducing trajectory amendments (i.e., online control), whereas larger R2 values reflect a response that unfolds with few-if any-online corrections. As expected, results showed a prior-antisaccade effect for response planning; that is, prosaccade latencies were increased when completed after an antisaccade. Moreover, prosaccades completed after an antisaccade elicited larger R2 values and less accurate endpoints than trials wherein a prosaccade was completed after another prosaccade. These results provide first evidence of a prior-antisaccade effect for trajectory control and indicate that the persistent and inhibitory response set arising from an antisaccade diminishes the online corrections, and thus endpoint accuracy, of a subsequent prosaccade.

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Optic ataxia and the function of the dorsal stream: Contributions to perception and action

Cited by 116 publications

References 73 publications

Visual Processing in the Action-Oriented Brain

Visual Processing in the Action-Oriented Brain

Redefining the Functional Organization of the Planum Temporale Region: Space, Objects, and Sensory–Motor Integration

The prior-antisaccade effect influences the planning and online control of prosaccades

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