The application of real-time magnetic resonance imaging (MRI) techniques to cardiac imaging is particularly attractive because current MR examinations of left ventricular (LV) function can be prohibitively long and are dependent on electrocardiographic triggering. We conducted a study of the minimum
Tonotopy in human auditory cortex examined with functional magnetic resonance imaging
โ Scribed by C. Mark Wessinger; Michael H. Buonocore; Clif L. Kussmaul; George R. Mangun
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 205 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1065-9471
No coin nor oath required. For personal study only.
โฆ Synopsis
Tonotopic organization within the human auditory cortex was investigated with functional magnetic resonance imaging (fMRI) using the blood oxygenation level-dependent (BOLD) contrast mechanism. Single-frequency pulsed tones were alternated with no-tone conditions to elicit stimulusspecific functional activity. Differential frequency-specific activity was imaged within the auditory cortex Activations for high-frequency tones were located more posteriorly and medially than those for low-frequency tones. Such a pattern is consistent with descriptions of tonotopic organization suggested by other nonneuroimaging methodologies used with human and nonhuman primates. Furthermore, these results demonstrate that fMRI can be used to reliably investigate functional organization of the human auditory cortex. Hum.
๐ SIMILAR VOLUMES
The precise functional role of the hippocampus in human episodic memory is an unresolved question though it has recently been suggested that distinct medial temporal lobe (MTL) regions are involved in encoding and retrieval operations respectively. For example, a recent meta-analysis of positron emi