Unilateral spatial neglect (USN) has been mainly investigated in the visual modality; only few studies compared spatial neglect across different sensory modalities, and explored their multisensory interactions, with controversial results. We investigated the integration between vision and haptics, through a bisection task of a cross modal illusion, the Judd variant of the Müller-Lyer illusion. We examined right-brain-damaged patients with (n = 7) and without (n = 7) left USN, and neurologically unimpaired participants (n = 14) in the bisection of Judd stimuli under visual, haptic, and visuo-haptic presentation. Neglect patients showed the characteristic rightward bias in the bisection of the baseline stimuli in the visual modality, but not in the haptic and visuo-haptic conditions. The illusory effects were preserved in each group and in each modality, indicating that the processing of the cross modal illusion is independent of the presence of deficits of spatial attention and representation. Spatial neglect can be modality-specific, but visual and tactile sensory inputs are properly integrated

Mancini, F., Bricolo, E., Mattioli, F., Vallar, G. (2011). Visuo-haptic interactions in unilateral spatial neglect: the cross modal judd illusion. FRONTIERS IN PSYCHOLOGY, 2(341), 1-12 [10.3389/fpsyg.2011.00341].

Visuo-haptic interactions in unilateral spatial neglect: the cross modal judd illusion

BRICOLO, EMANUELA;VALLAR, GIUSEPPE
2011

Abstract

Unilateral spatial neglect (USN) has been mainly investigated in the visual modality; only few studies compared spatial neglect across different sensory modalities, and explored their multisensory interactions, with controversial results. We investigated the integration between vision and haptics, through a bisection task of a cross modal illusion, the Judd variant of the Müller-Lyer illusion. We examined right-brain-damaged patients with (n = 7) and without (n = 7) left USN, and neurologically unimpaired participants (n = 14) in the bisection of Judd stimuli under visual, haptic, and visuo-haptic presentation. Neglect patients showed the characteristic rightward bias in the bisection of the baseline stimuli in the visual modality, but not in the haptic and visuo-haptic conditions. The illusory effects were preserved in each group and in each modality, indicating that the processing of the cross modal illusion is independent of the presence of deficits of spatial attention and representation. Spatial neglect can be modality-specific, but visual and tactile sensory inputs are properly integrated
Articolo in rivista - Articolo scientifico
unilateral spatial neglect; Müller-Lyer illusion; visual illusion; tactile illusion; cross-modal integration
English
2011
2
341
1
12
Article 341
none
Mancini, F., Bricolo, E., Mattioli, F., Vallar, G. (2011). Visuo-haptic interactions in unilateral spatial neglect: the cross modal judd illusion. FRONTIERS IN PSYCHOLOGY, 2(341), 1-12 [10.3389/fpsyg.2011.00341].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/27234
Citazioni
  • Scopus 24
  • ???jsp.display-item.citation.isi??? 22
Social impact