Origins: Brain and Self Organization

By Karl Pribram | Go to book overview

Spectral Density Maps of Receptive Fields
in the
Rat's Somatosensory Cortex

Joseph King, Min Xie, Bibo Zheng and Karl Pribram

Center for Brain Research and Informational Sciences and Department of Psychology Radford University, Radford, VA 24142


Abstract

To extend findings from visual neurophysiology we plotted responses for 48 locations in the somatosensory "barrel cortex" of the rat to spatial and temporal frequency stimulation of their vibrissae. The recordings obtained from bursts of spikes were plotted as response manifolds resembling field potentials such as those recorded with small macroelectrodes. The burst manifolds were shown to be composed of those obtained from single spikes, demonstrating continuity between two levels of analysis (single spikes and bursts).

A computer simulation of our results showed that, according to the principles of signal processing, the somatosensory receptive fields can be readily described by Gabor-like functions much as in the visual system. Further, changes with respect to direction of whisker stimulation could be described in terms of spatiotemporal (vectorial?) shifts among these functions.

As late as the 1950's, the structure of memory storage and the brain processes leading to perception remained enigmatic. Thus Karl Lashley ( 1950) could exclaim that his lifelong search for an encoded memory trace had been in vain, and Gary Boring ( 1929) could indicate in his History of Experimental Psychology that little was to be gained, at this stage of knowledge, by psychologists studying brain function.

All this was dramatically changed when engineers, in the early 1960's, found ways to produce optical holograms using the mathematical formulation proposed by Dennis Gabor ( 1948). The mathematics of holography and physical properties of holograms provided a palpable instantiation of distributed memory and how percepts (images) could be retrieved from such a distributed store. Engineers, (e.g. Van Heerden, 1963) psychophysicists, (e.g. Julez and Pennington, 1965); and neuroscientists, (e.g. Pribram, 1966; and Pollen, Lee and Taylor, 1971) saw the relevance of holography to the hitherto intractable issues of brain function in memory and perception ( Barrett, 1969; Campbell & Robson, 1968; and Pribram, Nuwer and Barron, 1974).

-557-

Notes for this page

Add a new note
If you are trying to select text to create highlights or citations, remember that you must now click or tap on the first word, and then click or tap on the last word.
One moment ...
Default project is now your active project.
Project items

Items saved from this book

This book has been saved
Highlights (0)
Some of your highlights are legacy items.

Highlights saved before July 30, 2012 will not be displayed on their respective source pages.

You can easily re-create the highlights by opening the book page or article, selecting the text, and clicking “Highlight.”

Citations (0)
Some of your citations are legacy items.

Any citation created before July 30, 2012 will labeled as a “Cited page.” New citations will be saved as cited passages, pages or articles.

We also added the ability to view new citations from your projects or the book or article where you created them.

Notes (0)
Bookmarks (0)

You have no saved items from this book

Project items include:
  • Saved book/article
  • Highlights
  • Quotes/citations
  • Notes
  • Bookmarks
Notes
Cite this page

Cited page

Style
Citations are available only to our active members.
Buy instant access to cite pages or passages in MLA, APA and Chicago citation styles.

(Einhorn, 1992, p. 25)

(Einhorn 25)

1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

Cited page

Bookmark this page
Origins: Brain and Self Organization
Table of contents

Table of contents

Settings

Settings

Typeface
Text size Smaller Larger Reset View mode
Search within

Search within this book

Look up

Look up a word

  • Dictionary
  • Thesaurus
Please submit a word or phrase above.
Print this page

Print this page

Why can't I print more than one page at a time?

Help
Full screen
/ 718

matching results for page

    Questia reader help

    How to highlight and cite specific passages

    1. Click or tap the first word you want to select.
    2. Click or tap the last word you want to select, and you’ll see everything in between get selected.
    3. You’ll then get a menu of options like creating a highlight or a citation from that passage of text.

    OK, got it!

    Cited passage

    Style
    Citations are available only to our active members.
    Buy instant access to cite pages or passages in MLA, APA and Chicago citation styles.

    "Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn, 1992, p. 25).

    "Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn 25)

    "Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences."1

    1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

    Cited passage

    Thanks for trying Questia!

    Please continue trying out our research tools, but please note, full functionality is available only to our active members.

    Your work will be lost once you leave this Web page.

    Buy instant access to save your work.

    Already a member? Log in now.

    Oops!

    An unknown error has occurred. Please click the button below to reload the page. If the problem persists, please try again in a little while.