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Full-Text Articles in Neurosciences
Asymmetries In Motor Attention During A Cued Bimanual Reaching Task: Left And Right Handers Compared, Gavin Buckingham, Julie Main, David Carey
Asymmetries In Motor Attention During A Cued Bimanual Reaching Task: Left And Right Handers Compared, Gavin Buckingham, Julie Main, David Carey
Gavin Buckingham
Several studies have indicated that right handers have attention biased toward their right hand during bimanual coordination (Buckingham and Carey, 2009; Peters, 1981). To determine if this behavioral asymmetry was linked to cerebral lateralization, we examined this bias in left and right handers by combining a discontinuous double-step reaching task with a Posner-style hand cueing paradigm. Left and right handed participants received a tactile cue (valid on 80% of trials) prior to a bimanual reach to target pairs. Right handers took longer to inhibit their right hand and made more right hand errors, suggesting that their dominant hand was more …
Investigating Bimanual Coordination In Dominant And Non-Dominant Virtual Hands, Gavin Buckingham, David Carey
Investigating Bimanual Coordination In Dominant And Non-Dominant Virtual Hands, Gavin Buckingham, David Carey
Gavin Buckingham
A bias in attention towards the dominant hand has been cited as a possible factor in the lateralisation of human bimanual coordination (Peters, 1981). A mirror was placed between the hands of 18 dextral participants performing rhythmic anti-phase movements. This set-up gave the appearance of a reflected virtual hand (moving in time with the un-occluded hand), in the same spatial location as the occluded left or right hand. This asymmetrical conflict between vision and action examined whether the left hand would show higher levels of error when replaced by a virtual right hand than the converse condition. Higher levels of …
Input Vs. Output Level Coupling Demonstrates Asymmetrical Attentional Biases, Gavin Buckingham, David Carey
Input Vs. Output Level Coupling Demonstrates Asymmetrical Attentional Biases, Gavin Buckingham, David Carey
Gavin Buckingham
The current study examined the performance of each limb as it reached across the body (the hard task), while yoked to it’s ipsilateral reaching counterpart (the easy task).
Attentional Vs. Intentional Biases In Hand Movements; Hand-Specific Coupling & Bimanual Reaching, Gavin Buckingham, David Carey
Attentional Vs. Intentional Biases In Hand Movements; Hand-Specific Coupling & Bimanual Reaching, Gavin Buckingham, David Carey
Gavin Buckingham
Most of the population is dextral, showing a clear preference for performing the vast majority of tasks with their right hand. Peters (1981) suggested that an asymmetrical bias in attention (toward the right hand in right handers) could account for many manual asymmetries in bimanual task performance, with the left hand unable to perform the attentionally demanding portion of the task. Likewise, Honda (1982) demonstrated preferential monitoring of the dominant hand during a bimanual reaching task. Recent evidence has also shown an intentional (i.e. output related motor attention) bias toward the dominant hand (Bestelmeyer & Carey, 2004), another possible factor …