EurekaMag.com logo
+ Site Statistics
References:
53,214,146
Abstracts:
29,074,682
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Electrophysiological evidence for right frontal lobe dominance in spatial visuomotor learning


Archives Italiennes de Biologie 124(1): 1-13
Electrophysiological evidence for right frontal lobe dominance in spatial visuomotor learning
Slow negative potential shifts were recorded together with the error made in motor performance when two different groups of 14 students tracked visual stimuli with their right hand. Various vasuomotor tasks were compared i) A tracking task (T) in which subjects had to track the stimulus directly, showed no decrease of error in motor performance during the experiment. ii) In a distorted tracking task (DT) a continuous horizontal distortion of the visual feedback had to be compensated. The additional demands of this task required visuomotor learning. iii) Another learning condition was a mirrored-tracking task (horizontally inverted tracking, hIT), i.e. an elementary function, such as the concept of changing left and right was interposed between perception and action. iv) In addition, subjects performed a non-tracking control task (NT) in which they started the visual stimulus without tracking it. A slow negative potential shift was associated with the visuomotor performance (TP: tracking potential). In the learning tasks (DT and hlT) this negativitity was significantly enhanced over the anterior midline and in hlT frontally and precentrally over both hemispheres. Comparing hlT and T for every subject, the enhancement of the tracking potential in hlT was correlated with the success in motor learning in frontomedial and bilaterally in frontolateral recordings (r = 0.81-0.88). However, comparing DT and T, such a correlation was only found in frontomedial and right frontolateral electrodes (r = 0.5-061), but not at the left frontolateral electrode. These experiments are consistent with previous findings (34) and give further neurophysiological evidence for frontal lobe activity in visuomotor learning. The hemispherical asymmetry is discussed in respect to hemispherical specialization (right frontal lobe dominance in spatial visuomotor learning).

(PDF 0-2 workdays service: $29.90)

Accession: 005349638

PMID: 3741032



Related references

Cerebellum and frontal cortex are differentially activated during visuomotor sequence and visuomotor association learning. Society for Neuroscience Abstracts 27(2): 1683, 2001

Visuo-spatial short-term recognition memory and learning after temporal lobe excisions, frontal lobe excisions or amygdalo-hippocampectomy in man. Neuropsychologia 33(1): 1-24, 1995

Electrophysiological evidence implicating frontal lobe dysfunction in schizophrenia. Psychopharmacology Bulletin 22(3): 885-889, 1986

Subdivisions of visuomotor and visual cortex in the frontal lobe of primates the frontal eye field and the target of the middle temporal area. Society for Neuroscience Abstracts 14(2): 820, 1988

Is impairment in set-shifting specific to frontal-lobe dysfunction? Evidence from patients with frontal-lobe or temporal-lobe epilepsy. Journal of the International Neuropsychological Society 11(4): 477-481, 2005

Deficient programming in spatial learning after frontal lobe damage. Neuropsychologia 27(7): 971-976, 1989

Cleverness and wisdom in 12 year olds electrophysiological evidence for late maturation of the frontal lobe. Developmental Neuropsychology 8(2-3): 279-298, 1992

Electrophysiological evidence of right parietal dominance of visual spatial processing tasks. Journal of Neurology 232(SUPPL): 140, 1985

The frontal lobe and memory. (Essay on the role of the frontal lobe in learning). Annales Medico-Psychologiques 123(3): 289-302, 1965

Evidence for quantitative domain dominance for verbal and spatial working memory in frontal and parietal cortex. Cortex; A Journal Devoted to the Study of the Nervous System and Behavior 39(4-5): 897-911, 2003