Overestimation of numerical distances in the left side of space.
Normal subjects presented with a middle number and two left- and right-sided outer numbers overestimate the numerical distance between the middle number and that positioned at its left side. Repetitive transcranial magnetic stimulation (rTMS) of the right posterior parietal cortex specifically counteracts this bias, suggesting that the mental representation of space defined by numbers is shifted toward the left side depending on a greater activity of the right hemisphere.
Oliveri
M
M
Laboratorio di Neurologia Clinica e Comportamentale, Fondazione Santa Lucia IRCCS, Via Ardeatina 306, Rome 00179, Italy. maxoliveri@tiscali.it
Rausei
V
V
Koch
G
G
Torriero
S
S
Turriziani
P
P
Caltagirone
C
C
D000328:Adult; D004215:Distance Perception / Q000502:physiology*; D004292:Dominance, Cerebral; D005260:Female; D007839:Functional Laterality; D006801:Humans; D008280:Magnetics; D008297:Male; D008433:Mathematics; D010296:Parietal Lobe / Q000502:physiology; D012016:Reference Values