Iris E. C. Sommer
- Published in print:
- 2010
- Published Online:
- August 2013
- ISBN:
- 9780262014137
- eISBN:
- 9780262265942
- Item type:
- chapter
- Publisher:
- The MIT Press
- DOI:
- 10.7551/mitpress/9780262014137.003.0211
- Subject:
- Neuroscience, Research and Theory
This chapter offers an updated review and meta-analysis of existing research on sex differences, coupled with a thorough discussion of a possible underlying mechanism in a more bilateral brain in ...
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This chapter offers an updated review and meta-analysis of existing research on sex differences, coupled with a thorough discussion of a possible underlying mechanism in a more bilateral brain in females. It specifically discusses the current literature on sex differences in language lateralization as reflected in handedness, asymmetry of the planum temporale, and functional language lateralization. The chapter shows that cultural (or possibly racial) differences are a moderator of the sex difference in handedness. There is no sex difference in language lateralization. It is suggested that females who are innately left or mixed handed more frequently switch to right-hand use for social activities such as writing and eating than do left or mixed-handed males.Less
This chapter offers an updated review and meta-analysis of existing research on sex differences, coupled with a thorough discussion of a possible underlying mechanism in a more bilateral brain in females. It specifically discusses the current literature on sex differences in language lateralization as reflected in handedness, asymmetry of the planum temporale, and functional language lateralization. The chapter shows that cultural (or possibly racial) differences are a moderator of the sex difference in handedness. There is no sex difference in language lateralization. It is suggested that females who are innately left or mixed handed more frequently switch to right-hand use for social activities such as writing and eating than do left or mixed-handed males.
Catherine LiéGeois-Chauvel, Kimberly Giraud, Jean-Michel Badier, Patrick Marquis, and Patrick Chauvel
- Published in print:
- 2003
- Published Online:
- March 2012
- ISBN:
- 9780198525202
- eISBN:
- 9780191689314
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780198525202.003.0010
- Subject:
- Psychology, Music Psychology
This chapter examines the tonotopic organization of the human auditory cortex using intracerebrally recorded evoked potentials studied as a function of the anatomical recording site. The sensitivity ...
More
This chapter examines the tonotopic organization of the human auditory cortex using intracerebrally recorded evoked potentials studied as a function of the anatomical recording site. The sensitivity of a neuronal population to a given frequency is determined from fluctuations in auditory evoked potential (AEP) amplitude between different recording sites in the primary auditory cortex and surrounding secondary areas like the planum temporale. The chapter particularly explores the tonotopic organization of the human auditory cortex in both cerebral hemispheres. In the right hemisphere, clear spectrally organized tonotopic maps wre observed with distinct separations between different frequency-processing regions. AEPs for high frequencies were recorded medially, whereas AEPs for low frequencies were recorded laterally. However, in the left hemisphere, this tonotopic organization was less evident, with different regions involved in the processing of a range of frequencies. The hemisphere-related difference in the processing of tonal frequency is discussed in relation to pitch perception.Less
This chapter examines the tonotopic organization of the human auditory cortex using intracerebrally recorded evoked potentials studied as a function of the anatomical recording site. The sensitivity of a neuronal population to a given frequency is determined from fluctuations in auditory evoked potential (AEP) amplitude between different recording sites in the primary auditory cortex and surrounding secondary areas like the planum temporale. The chapter particularly explores the tonotopic organization of the human auditory cortex in both cerebral hemispheres. In the right hemisphere, clear spectrally organized tonotopic maps wre observed with distinct separations between different frequency-processing regions. AEPs for high frequencies were recorded medially, whereas AEPs for low frequencies were recorded laterally. However, in the left hemisphere, this tonotopic organization was less evident, with different regions involved in the processing of a range of frequencies. The hemisphere-related difference in the processing of tonal frequency is discussed in relation to pitch perception.
