Publications by authors named "R Narison"
People with left unilateral spatial neglect (USN) following a right brain lesion show difficulty in orienting their attention toward stimuli presented on the left. However, cuing the stimuli with gaze direction or a pointing arrow can help some of them to compensate for this difficulty. In order to build a tool that helps to identify these patients, we needed a short version of the paradigm classically used to test gaze and arow cuing effects in healthy adults, adapted to the capacities of patients with severe attention deficit.
View Article and Find Full Text PDFIndividuals with left unilateral spatial neglect (USN) following a right hemisphere lesion show difficulty in orienting their attention toward stimuli presented on the left. In normal cognition, others' gaze direction and a pointing arrow naturally guide visual attention. Here, we explore a method to identify patients who may benefit from these skills as a base for compensation during rehabilitation.
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- Proprioceptive signals play a crucial role in kinesthesia, but can be overshadowed by visual input in cases of visuo-proprioceptive conflict, as shown in three experiments using a 'mirror box' setup.
- In these experiments, participants' perception of arm movements was tested by manipulating proprioceptive feedback through vibration while their reflection in a mirror provided conflicting visual information.
- Results indicated that when visual signals dominate (as in the case of a reflected static arm), kinesthetic illusions are less prevalent, highlighting the complex interplay between visual and proprioceptive inputs in shaping our perception of movement.