0
0

Figure 7–2. Illustration of the cortical mantle in the coronal plane.

Sections

Excerpt

Your session has timed out. Please sign back in to continue.
Sign In Your Session has timed out. Please sign back in to continue.
Sign In to Access Full Content
 
Username
Password
Sign in via Athens (What is this?)
Athens is a service for single sign-on which enables access to all of an institution's subscriptions on- or off-site.
Not a subscriber?

Subscribe Now/Learn More

PsychiatryOnline subscription options offer access to the DSM-5 library, books, journals, CME, and patient resources. This all-in-one virtual library provides psychiatrists and mental health professionals with key resources for diagnosis, treatment, research, and professional development.

Need more help? PsychiatryOnline Customer Service may be reached by emailing PsychiatryOnline@psych.org or by calling 800-368-5777 (in the U.S.) or 703-907-7322 (outside the U.S.).

Figure 7–2. Illustration of the cortical mantle in the coronal plane.Electrical dipoles (dashed arrows) and the magnetic fields (circular arrows around two such dipoles) generated by cortical columns are illustrated. Radially oriented (gyral) electric dipoles project to the scalp surface, but their magnetic fields remain tangentially oriented with respect to the scalp surface and appear at some distance from the dipole generating them. Tangentially oriented (sulcal) electric dipoles do not project to the scalp surface directly overlying them, but their magnetic fields do. Electrical dipoles are attenuated and diffused by the tissues through which they must pass before appearing at the scalp surface; magnetic fields do not suffer this attenuation and diffusion, but their strength falls off at 1/r2, where r = radius from the dipole source.

References

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).
Related Content
Articles
Psychiatric News
 
  • Print
  • PDF
  • E-mail
  • Chapter Alerts
  • Get Citation