title: Early occipital injury affects numerosity counting but not simple arithmetic.
abstract: This study investigated the effects of early occipital injury on the development of counting and simple arithmetic abilities in an occipital epileptic patient. This patient had obvious softening lesions in the bilateral occipital regions due to viral encephalitis at the age of 1.5 years. Results showed that she could perform subitizing and simple arithmetic very well, but could not perform numerosity counting tasks. These results suggest that the occipital cortex plays an important role in the development of numerosity counting skills, but not in the development of subitizing and simple arithmetic.
authors.affiliation: a The Siegler Center for Innovative Learning, The State Key Laboratory of Cognitive Neuroscience and Learning , IDG/McGovern Institute for Brain Research, Beijing Normal University , Beijing , China.
authors.forename: Han
authors.initials: H
authors.lastname: Zhang
authors.affiliation: b Department of Psychology and Social Behavior , University of California , Irvine , CA , USA.
authors.forename: Chuansheng
authors.initials: C
authors.lastname: Chen
authors.affiliation: c Department of Epilepsy , Yuquan Hospital of Tsinghua University , Beijing , China.
authors.forename: Zhaohui
authors.initials: Z
authors.lastname: Sun
authors.affiliation: c Department of Epilepsy , Yuquan Hospital of Tsinghua University , Beijing , China.
authors.forename: Jiuluan
authors.initials: J
authors.lastname: Lin
authors.affiliation: c Department of Epilepsy , Yuquan Hospital of Tsinghua University , Beijing , China.
authors.forename: Wenjing
authors.initials: W
authors.lastname: Zhou
authors.affiliation: a The Siegler Center for Innovative Learning, The State Key Laboratory of Cognitive Neuroscience and Learning , IDG/McGovern Institute for Brain Research, Beijing Normal University , Beijing , China.
authors.forename: Xinlin
authors.initials: X
authors.lastname: Zhou
mesh_terms: D001927:Brain Diseases / Q000209:etiology / Q000503:physiopathology / Q000523:psychology*; D003071:Cognition / Q000502:physiology; D018792:Encephalitis, Viral / Q000150:complications*; D005260:Female; D006801:Humans; D008433:Mathematics; D009483:Neuropsychological Tests; D009778:Occipital Lobe / Q000503:physiopathology*; D011340:Problem Solving / Q000502:physiology*; D055815:Young Adult
keywords: counting; early brain injury; language processing; numerical processing; occipital cortex