Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

Beyond the Olfactory Bulb: An Odotopic Map in the Forebrain

Alexander A. Nikonov, Thomas E. Finger, John Caprio and Linda M. Bartoshuk
Proceedings of the National Academy of Sciences of the United States of America
Vol. 102, No. 51, Enzymatic Rescue of Myelination (Dec. 20, 2005), pp. 18688-18693
Stable URL: http://www.jstor.org/stable/4152678
Page Count: 6
  • Read Online (Free)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Beyond the Olfactory Bulb: An Odotopic Map in the
              Forebrain
Preview not available

Abstract

We report electrophysiological evidence that a simple odotopy, the spatial mapping of different odorants, is maintained above the level of the olfactory bulb (OB). Three classes of biologically relevant odorants for fish are processed in distinct regions of the forebrain (FB) in the channel catfish. Feeding cues, mainly amino acids and nucleotides, are represented in lateral, palliai portions of the FB, equivalent to the olfactory cortex of amniote vertebrates, whereas social signals mediated by bile salts are represented in medial FB centers, possibly homologous to portions of the amygdala. As in the OB, the different odorant classes map onto different territories; however, the response properties of units of the olfactory areas of the FB do not simply mirror those of the OB. For some units, distinctive response properties emerged, because the FB is the first center where odors subserving a common behavioral function (i.e., food function) converge.

Page Thumbnails

  • Thumbnail: Page 
[18688]
    [18688]
  • Thumbnail: Page 
18689
    18689
  • Thumbnail: Page 
18690
    18690
  • Thumbnail: Page 
18691
    18691
  • Thumbnail: Page 
18692
    18692
  • Thumbnail: Page 
18693
    18693