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Attending to local form while ignoring global aspects depends on handedness: evidence from TMS
Carmel Mevorach1, Glyn W Humphreys, Lilach Shalev
1Behavioural Brain Sciences Centre, School of Psychology, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK. c.mevorach@bham.ac.uk
Abstract:
Our perceptions of the whole and of the parts of a visual stimulus are mediated by different brain regions. We used low-frequency transcranial magnetic stimulation (TMS) to show for the first time that opposite, homologous regions in the two hemispheres are involved in attending to local parts for left- and right-handed individuals. The brain regions that focus on the 'trees' while ignoring the 'forest' are switched as a function of handedness.

