Imagery of motor actions: Differential effects of kinesthetic and visual–motor mode of imagery in single-trial EEG

Using a motor imagery questionnaire to estimate the performance of a Brain–Computer Interface based on object oriented motor imagery

“…As a result, the correlation between the BCI classifier and the KI score was lower for the GOI task than for the SI task. A possible explanation might be that very 'good' imagers already had good kinaesthetic imagination and the presence of an object diverted them from kinaesthetic to a visual imagery, which activated different areas of the cortex [Neuper et al 2005, Guillot et al 2009]. This hypothesis was supported by the results of the analysis of the ERS/ERD maps of participants with the worst and best KI during SI and GOI.…”

“…A true positive rate (a ratio of correctly classified trials compared to total number of trials) was adopted as a measure of the classification accuracy. A mean value of true positive rate for the right and the left hand was presented Signal processing was performed using rtsBCI [Scherer 2005] and the BioSig Open source toolboxes in Matlab (Mathworks Inc, USA).…”

Towards an independent brain–computer interface using steady state visual evoked potentials

“…reported that one reason that SSVEP performance improved with practice was development of new attentional strategies. Similarly, subjects who utilized first-person movement imagery learned mu BCI control better than subjects who were told to adopt third-person movement imagery (Neuper et al, 2005).…”

“…People can voluntarily modulate SSVEP activity without shifting gaze using a display and task that could be adapted to a BCI. Many avenues toward improvement that have been successful with other BCIs, such as improved referencing, filtering, subject and classifier training, task and display optimization, noise rejection, incorporation of additional signal features, spectral analysis parameters, and other parameters have not yet been fully explored (McFarland et al, 1997(McFarland et al, , 1998(McFarland et al, , 2005(McFarland et al, , 2006Wolpaw et al, 2002;Allison, 2003;Birbaumer et al, 2003;Kübler and Neumann, 2005;Neuper et al, 2005;Allison and Pineda, 2006). Initial efforts have suggested that some of these avenues may be useful in SSVEP BCI systems (Wang et al, 2004;Kelly et al, 2005aKelly et al, , 2005bLalor et al, 2005;Müller-Putz et al, 2005;Trejo et al, 2006).…”

The effect of voluntary modulation of the sensory-motor rhythm during different mental tasks on H reflex

“…They were instructed to imagine feeling muscles in their legs (kinaesthetic imagery) rather than a simple visual imagery because of their distinctive activation of the sensory-motor cortex (Neuper et al 2005). After each cue, 5s were given to participants to concentrate on the tasks prior to SMR measurement.…”