نتایج جستجو برای: cerebral dominance

تعداد نتایج: 209374  

Journal: :Journal of clinical and experimental neuropsychology 2009
William S Helton Rosalie P Kern Donieka R Walker

In this study lateral differences in tympanic membrane temperature (TMT) were explored as an index of cerebral lateralization. TMT posttask differences were examined for sustained attention to response tasks (SARTs) following the presentation of negative and neutral emotional picture stimuli. Right TMT changed significantly more from baseline TMT than did left TMT after participants performed S...

2013
Thomas H Priddle Timothy J Crow

Annett's right-shift theory proposes that human cerebral dominance (the functional and anatomical asymmetry or torque along the antero-posterior axis) and handedness are determined by a single "right-shift" gene. Familial transmission of handedness and specific deviations of cerebral dominance in sex chromosome aneuploidies implicate a locus within an X-Y homologous region of the sex chromosome...

2012
Margriet A Groen Andrew J O Whitehouse Nicholas A Badcock Dorothy V M Bishop

In the majority of people, language production is lateralized to the left cerebral hemisphere and visuospatial skills to the right. However, questions remain as to when, how, and why humans arrive at this division of labor. In this study, we assessed cerebral lateralization for language production and for visuospatial memory using functional transcranial Doppler ultrasound in a group of 60 typi...

Journal: :Neuropsychologia 2008
Zoë R Hunter Marc Brysbaert

Traditional neuropsychology employs visual half-field (VHF) experiments to assess cerebral language dominance. This approach is based on the assumption that left cerebral dominance for language leads to faster and more accurate recognition of words in the right visual half-field (RVF) than in the left visual half-field (LVF) during tachistoscopic presentation. Information in the RVF is directly...

Journal: :Neuron 2002
Chiayu Chiu Michael Weliky

Utilizing a multielectrode array to record spontaneous and visually evoked activity of cortical neurons in area 17, we investigate the relationship between long-range correlated spontaneous activity and functional ocular dominance columns during early ferret postnatal development (P24-P29). In regions of visual cortex containing alternating ocular dominance patches, periodic fluctuations in cor...

Journal: :Neuron 2010
Bor-Shuen Wang Rashmi Sarnaik Jianhua Cang

Changes of ocular dominance in the visual cortex can be induced by visual manipulations during a critical period in early life. However, the role of critical period plasticity in normal development is unknown. Here we show that at the onset of this time window, the preferred orientations of individual cortical cells in the mouse are mismatched through the two eyes and the mismatch decreases and...

Journal: :Science 2005
Aaron W McGee Yupeng Yang Quentin S Fischer Nigel W Daw Stephen M Strittmatter

Monocular deprivation normally alters ocular dominance in the visual cortex only during a postnatal critical period (20 to 32 days postnatal in mice). We find that mutations in the Nogo-66 receptor (NgR) affect cessation of ocular dominance plasticity. In NgR-/- mice, plasticity during the critical period is normal, but it continues abnormally such that ocular dominance at 45 or 120 days postna...

Journal: :Neuron 2008
Cheng-Hang Liu Arnold J. Heynen Marshall G. Hussain Shuler Mark F. Bear

The ocular dominance (OD) shift that occurs in visual cortex after brief monocular deprivation (MD) is a classic model of experience-dependent cortical plasticity. It has been suggested that OD plasticity in layer 2/3 of visual cortex precedes and is necessary for plasticity in the thalamocortical input layer 4. Here, we show in mouse visual cortex that rapid OD plasticity occurs simultaneously...

Journal: :Annual review of neuroscience 2004
Dmitri B Chklovskii Alexei A Koulakov

In mammalian visual cortex, neurons are organized according to their functional properties into multiple maps such as retinotopic, ocular dominance, orientation preference, direction of motion, and others. What determines the organization of cortical maps? We argue that cortical maps reflect neuronal connectivity in intracortical circuits. Because connecting distant neurons requires costly wiri...

Journal: :Neuropsychologia 2013
Anita D'Anselmo Susanne Reiterer Francesca Zuccarini Luca Tommasi Alfredo Brancucci

It is known that the left hemisphere of the human brain is critical in understanding and producing spoken language, but it remains a topic of great interest determining the cerebral lateralization of multiple languages. The aim of this study is to examine the effects of similarity between languages on hemispheric asymmetry of bilingual brains. The involvement degree of left and right hemisphere...

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