Postnatal Development of Onset Transient Responses in Macaque V1 and V2 Neurons.

@article{citeulike:2939295, abstract = {Vision of newborn infants is limited by immaturities in their visual brain. In adult primates the transient onset discharges of visual cortical neurons are thought to be intimately involved with capturing the rapid succession of brief images in visual scenes. Here we sought to determine the responsiveness and quality of transient responses in individual neurons of the primary visual cortex (V1) and visual area 2 (V2) of infant monkeys. We show that the transient component of neuronal firing to 640 millisecond stationary gratings was as robust and as reliable as in adults only 2 weeks after birth while the sustained component was more sluggish in infants than in adults. Thus, the cortical circuitry supporting onset transient responses is functionally mature near birth, and our findings predict that neonates, known for their 'impoverished vision', are capable of initiating relatively mature fixating eye movements and of performing in detection of simple objects far better than traditionally thought.}, address = {University of Houston.}, author = {Zhang, Bin and Smith Iii, Earl L L. and Chino, Yuzo M M. }, citeulike-article-id = {2939295}, doi = {http://dx.doi.org/10.1152/jn.90446.2008}, issn = {0022-3077}, journal = {Journal of neurophysiology}, keywords = {vision}, month = {June}, posted-at = {2008-06-28 17:05:58}, priority = {2}, title = {Postnatal Development of Onset Transient Responses in Macaque V1 and V2 Neurons.}, url = {http://dx.doi.org/10.1152/jn.90446.2008}, year = {2008} }

TY - JOUR ID - citeulike:2939295 L3 - citeulike-article-id:2939295 TI - Postnatal Development of Onset Transient Responses in Macaque V1 and V2 Neurons. JF - Journal of neurophysiology AD - University of Houston. SN - 0022-3077 N2 - Vision of newborn infants is limited by immaturities in their visual brain. In adult primates the transient onset discharges of visual cortical neurons are thought to be intimately involved with capturing the rapid succession of brief images in visual scenes. Here we sought to determine the responsiveness and quality of transient responses in individual neurons of the primary visual cortex (V1) and visual area 2 (V2) of infant monkeys. We show that the transient component of neuronal firing to 640 millisecond stationary gratings was as robust and as reliable as in adults only 2 weeks after birth while the sustained component was more sluggish in infants than in adults. Thus, the cortical circuitry supporting onset transient responses is functionally mature near birth, and our findings predict that neonates, known for their 'impoverished vision', are capable of initiating relatively mature fixating eye movements and of performing in detection of simple objects far better than traditionally thought. KW - vision AU - Zhang, Bin AU - Smith Iii, Earl L AU - Chino, Yuzo M PY - 2008/06/25/ UR - http://dx.doi.org/10.1152/jn.90446.2008 ER -