Individual variation in the location of the parietal eye fields: a TMS study

Experimental Brain Research
Suzanne RyanStephen R Jackson

Abstract

Transcranial magnetic stimulation (TMS) is a popular technique that can be used to investigate the functional role of specific cortical areas with reference to a particular behavioural task. Single-cell recording studies performed in non-human primates have demonstrated that a region of the parietal lobe known as the lateral intraparietal area is specialized in the planning and control of saccadic eye movements. The homologue of this area in humans is termed the parietal eye fields (PEF) and its role in relation to saccades has previously been examined using TMS. In this paper individual variability in the functional effect of parietal TMS on the latency, amplitude and angular direction of visually-guided saccades has been assessed. By examining individual variability in the spatial distribution of scalp-based localization and brain surface anatomy and stereotaxic localizations of the PEF it was shown that the distances between the sites determined by these three methods were not negligible, which raises problems regarding the most reliable anatomical localization technique to use. An assessment of the effect of TMS on saccade metrics (latency, amplitude error and angular error) at a grid of locations over parietal cortex demon...Continue Reading

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Citations

Jul 11, 2012·Experimental Brain Research·Michael Vesia, J Douglas Crawford
Jan 19, 2011·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Steven L PrimeJ Douglas Crawford
May 20, 2009·Neuroscience Letters·Pierpaolo BusanPiero Paolo Battaglini
May 12, 2009·Behavioural Brain Research·Pierpaolo BusanPiero Paolo Battaglini
May 11, 2012·Brain Stimulation·Gordon L F ChengMarinella Cappelletti
Jul 6, 2010·Neuroscience and Biobehavioral Reviews·Marco SandriniElena Rusconi
Oct 15, 2009·The Neuroscientist : a Review Journal Bringing Neurobiology, Neurology and Psychiatry·Declan J McKeefryAntony B Morland

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