Cognitive Psychophysiology: Event-Related Potentials and the Study of Cognition

By Emanuel Donchin | Go to book overview

8
Report of Panel III: Preparatory Processes
Panel chair: W. Ritter
Panel members: S. Kelso
M. Kutas
R. Shiffrin

8.1 SURVEY OF EVENT PRECEDING NEGATIVITIES

Ritter: After a brief survey of ERP components such as the CNV and the readiness potential, I shall outline recent changes in thinking about these po tentials. Marta Kutas will then comment on the view that there are several subcomponents to the CNV. Then Scott Kelso will present an analysis of the process of movement control.

The CNV is usually studied while subjects are assigned a warned reactiontime task, in which two stimuli, S1 and S2, are presented and the interval between S1 and S2 is constant. The S1 is the "warning" stimulus, and S2 is a target or "imperative" stimulus to which the subject must somehow respond. Figure 8.1 illustrates the ERPs that are recorded in this situation (note that in my figures, negative is "down"). These data were reported by Simson, Vaughan, and Ritter ( 1977). The interval between S1 and S2 was 1 sec, and the interval between successive presentations of the pair (trials) was 8 sec. S1 was identical on all trials of a given condition and served only as a warning cue. On the other hand, one of two stimuli, chosen randomly, were presented as S2. The subject was instructed to respond to one of these stimuli and to ignore the other (this is often called a "Go-No-Go" task). The two ERPs in the left column of the figure were recorded in a condition in which S1 and S2 were auditory. The waveforms in the right column were elicited by a visual S1 and S2. All these ERPs are recorded at a vertex electrode. The S1 elicited an ERP with a sequence of components. It is clear that auditory and visual stimuli elicit

-179-

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
Cognitive Psychophysiology: Event-Related Potentials and the Study of Cognition
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
/ 428

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.