Abstract
To investigate the hemispheric lateralization of attentional processes during visual search tasks depending on the stimulus material embedding the target, twelve patients with unilateral left (n = 7) or right (n = 5) parietal lesions and 20 age and education matched healthy controls (HC) were recruited. We used a visual search task for a uniquely tilted oblique bar embedded in an object shape ‘N’ or in its mirror reversal ‘И’. The accuracy and the averaged reaction times (RTs) in each stimulus type (’N’ or ‘И’) were analysed. HC presented significantly longer RTs when the target bar was embedded in ‘N’ among its mirror reversed ‘И’ (p <.05). This “reversed letter effect” was also found in the right parietal patients (p <.001), while no evidence of a reversed letter effect was found in the left parietal patients.
| Original language | English |
|---|---|
| Pages (from-to) | 217-224 |
| Number of pages | 8 |
| Journal | Neuroscience Letters |
| Volume | 699 |
| DOIs | |
| Publication status | Published - Apr 23 2019 |
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Keywords
- Parietal cortex
- Top-down attention
- Visual search asymmetries
ASJC Scopus subject areas
- Neuroscience(all)
Cite this
Exploring the neural correlates of the reversed letter effect : Evidence from left and right parietal patients. / Mangano, Giuseppa Renata; Cipolotti, Lisa; Turriziani, Patrizia; Giammusso, Isabella; Smirni, Daniela; Zhaoping, Li; Bracco, Martina; Oliveri, Massimiliano.
In: Neuroscience Letters, Vol. 699, 23.04.2019, p. 217-224.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Exploring the neural correlates of the reversed letter effect
T2 - Evidence from left and right parietal patients
AU - Mangano, Giuseppa Renata
AU - Cipolotti, Lisa
AU - Turriziani, Patrizia
AU - Giammusso, Isabella
AU - Smirni, Daniela
AU - Zhaoping, Li
AU - Bracco, Martina
AU - Oliveri, Massimiliano
PY - 2019/4/23
Y1 - 2019/4/23
N2 - To investigate the hemispheric lateralization of attentional processes during visual search tasks depending on the stimulus material embedding the target, twelve patients with unilateral left (n = 7) or right (n = 5) parietal lesions and 20 age and education matched healthy controls (HC) were recruited. We used a visual search task for a uniquely tilted oblique bar embedded in an object shape ‘N’ or in its mirror reversal ‘И’. The accuracy and the averaged reaction times (RTs) in each stimulus type (’N’ or ‘И’) were analysed. HC presented significantly longer RTs when the target bar was embedded in ‘N’ among its mirror reversed ‘И’ (p <.05). This “reversed letter effect” was also found in the right parietal patients (p <.001), while no evidence of a reversed letter effect was found in the left parietal patients.
AB - To investigate the hemispheric lateralization of attentional processes during visual search tasks depending on the stimulus material embedding the target, twelve patients with unilateral left (n = 7) or right (n = 5) parietal lesions and 20 age and education matched healthy controls (HC) were recruited. We used a visual search task for a uniquely tilted oblique bar embedded in an object shape ‘N’ or in its mirror reversal ‘И’. The accuracy and the averaged reaction times (RTs) in each stimulus type (’N’ or ‘И’) were analysed. HC presented significantly longer RTs when the target bar was embedded in ‘N’ among its mirror reversed ‘И’ (p <.05). This “reversed letter effect” was also found in the right parietal patients (p <.001), while no evidence of a reversed letter effect was found in the left parietal patients.
KW - Parietal cortex
KW - Top-down attention
KW - Visual search asymmetries
UR - http://www.scopus.com/inward/record.url?scp=85061987373&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85061987373&partnerID=8YFLogxK
U2 - 10.1016/j.neulet.2019.02.017
DO - 10.1016/j.neulet.2019.02.017
M3 - Article
C2 - 30763653
AN - SCOPUS:85061987373
VL - 699
SP - 217
EP - 224
JO - Neuroscience Letters
JF - Neuroscience Letters
SN - 0304-3940
ER -