Responsiveness and somatotopic organization of anterior parietal field 3b and adjoining cortex in newborn and infant monkeys.
Microelectrodes were used to record from somatosensory areas 3b and adjoining areas 3a and 1 in newborn monkeys. At birth, area 3b was responsive to cutaneous stimuli and had an adult-like somatotopic organization in marmosets and one squirrel monkey, while areas 1 and 3a had only limited responsiveness. In newborn macaque monkeys, cortex was unresponsive to cutaneous stimuli; however, by 1 month, areas 3b and 1 appeared to be adult-like in responsiveness and somatotopic organization.
Krubitzer
L A
LA
Department of Psychology, Vanderbilt University, Nashville, Tennessee 37240.
Kaas
J H
JH
D000344:Afferent Pathways / Q000502:physiology; D000818:Animals; D000831:Animals, Newborn / Q000502:physiology*; D001931:Brain Mapping; D002144:Callithrix; D005552:Forelimb / Q000294:innervation; D008252:Macaca fascicularis; D008465:Mechanoreceptors / Q000502:physiology; D009048:Motor Skills / Q000502:physiology*; D009474:Neurons / Q000502:physiology; D010296:Parietal Lobe / Q000502:physiology*; D012453:Saimiri; D012867:Skin / Q000294:innervation*; D013003:Somatosensory Cortex / Q000502:physiology*; D013045:Species Specificity