Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Medical Specialties (96)
- Neurology (77)
- Life Sciences (19)
- Social and Behavioral Sciences (19)
- Mental and Social Health (18)
-
- Psychology (16)
- Medical Genetics (13)
- Diseases (11)
- Genetic Phenomena (11)
- Public Health (11)
- Biochemical Phenomena, Metabolism, and Nutrition (9)
- Biomedical Informatics (9)
- Bioinformatics (8)
- Community Health and Preventive Medicine (8)
- Dietetics and Clinical Nutrition (8)
- Rehabilitation and Therapy (8)
- Nutrition (7)
- Trauma (7)
- Pediatrics (6)
- Cardiology (5)
- Oncology (5)
- Cardiovascular Diseases (4)
- Genetics and Genomics (4)
- Nervous System Diseases (4)
- Neurosurgery (4)
- Geriatrics (3)
- Medicine and Health (3)
- Institution
- Publication Year
Articles 121 - 123 of 123
Full-Text Articles in Neurosciences
Spectral And Temporal Processing In Human Auditory Cortex, Deborah A Hall, Ingrid Johnsrude, Mark P Haggard, Alan R Palmer, Michael A Akeroyd, A Quentin Summerfield
Spectral And Temporal Processing In Human Auditory Cortex, Deborah A Hall, Ingrid Johnsrude, Mark P Haggard, Alan R Palmer, Michael A Akeroyd, A Quentin Summerfield
Brain and Mind Institute Researchers' Publications
Hierarchical processing suggests that spectrally and temporally complex stimuli will evoke more activation than do simple stimuli, particularly in non-primary auditory fields. This hypothesis was tested using two tones, a single frequency tone and a harmonic tone, that were either static or frequency modulated to create four stimuli. We interpret the location of differences in activation by drawing comparisons between fMRI and human cytoarchitectonic data, reported in the same brain space. Harmonic tones produced more activation than single tones in right Heschl's gyrus (HG) and bilaterally in the lateral supratemporal plane (STP). Activation was also greater to frequency-modulated tones than …
Can Meaningful Effective Connectivities Be Obtained Between Auditory Cortical Regions?, M S Gonçalves, D A Hall, Ingrid Johnsrude, M P Haggard
Can Meaningful Effective Connectivities Be Obtained Between Auditory Cortical Regions?, M S Gonçalves, D A Hall, Ingrid Johnsrude, M P Haggard
Brain and Mind Institute Researchers' Publications
Structural equation modeling (SEM) of neuroimaging data can be evaluated both for the goodness of fit of the model and for the strength of path coefficients (as an index of effective connectivity). SEM of auditory fMRI data is made difficult by the necessary sparse temporal sampling of the time series (to avoid contamination of auditory activation by the response to scanner noise) and by the paucity of well-defined anatomical information to constrain the functional model. We used SEM (i.e., a model incorporating latent variables) to investigate how well fMRI data in four adjacent cortical fields can be described as an …
Navigation-Related Structural Change In The Hippocampi Of Taxi Drivers, E A Maguire, D G Gadian, Ingrid Johnsrude, C D Good, J Ashburner, R S Frackowiak, C D Frith
Navigation-Related Structural Change In The Hippocampi Of Taxi Drivers, E A Maguire, D G Gadian, Ingrid Johnsrude, C D Good, J Ashburner, R S Frackowiak, C D Frith
Brain and Mind Institute Researchers' Publications
Structural MRIs of the brains of humans with extensive navigation experience, licensed London taxi drivers, were analyzed and compared with those of control subjects who did not drive taxis. The posterior hippocampi of taxi drivers were significantly larger relative to those of control subjects. A more anterior hippocampal region was larger in control subjects than in taxi drivers. Hippocampal volume correlated with the amount of time spent as a taxi driver (positively in the posterior and negatively in the anterior hippocampus). These data are in accordance with the idea that the posterior hippocampus stores a spatial representation of the environment …