Attentional modulation of peripheral pointing hypometria in healthy participants: An insight into optic ataxia?

IF 2 3区心理学 Q3 BEHAVIORAL SCIENCES

Neuropsychologia Pub Date : 2025-01-29 DOI:10.1016/j.neuropsychologia.2025.109084

Tristan Jurkiewicz , Audrey Vialatte , Yaffa Yeshurun , Laure Pisella

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Abstract

Damage to the superior parietal lobule and intraparietal sulcus (SPL-IPS) causes optic ataxia (OA), characterized by pathological gaze-centered hypometric pointing to targets in the affected peripheral visual field. The SPL-IPS is also involved in covert attention. Here, we investigated the possible link between attention and action. This study investigated the effect of attention on pointing performance in healthy participants and two OA patients.

In invalid trials, targets appeared unpredictably across different visual fields and eccentricities. Valid trials involved cued targets at specific locations. The first experiment used a central cue with 75% validity, the second used a peripheral cue with 50% validity. The effect of attention on pointing variability (noise) or time was expected as a confirmation of cueing efficiency. Critically, if OA reflects an attentional deficit, then healthy participants, in the invalid condition (without attention), were expected to produce the gaze-centered hypometric pointing bias characteristic of OA.

Results

revealed main effects of validity on pointing biases in all participants with central predictive cueing, but not with peripheral low predictive cueing. This suggests that the typical underestimation of visual eccentricity in OA (visual field effect) at least partially results from impaired endogenous attention orientation toward the affected visual field.

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来源期刊

Neuropsychologia 医学-行为科学

CiteScore

5.10

自引率

3.80%

发文量

228

审稿时长

4 months

期刊介绍： Neuropsychologia is an international interdisciplinary journal devoted to experimental and theoretical contributions that advance understanding of human cognition and behavior from a neuroscience perspective. The journal will consider for publication studies that link brain function with cognitive processes, including attention and awareness, action and motor control, executive functions and cognitive control, memory, language, and emotion and social cognition.