Difference between revisions of "Node (in neurocognitive linguistics)"

From Glottopedia
Jump to navigation Jump to search
m (cf)
(added a category)
 
(7 intermediate revisions by the same user not shown)
Line 7: Line 7:
  
 
A '''node''' is any point at which [[line|lines]] meet.  At each such point in [[relational network theory|relational network]] modeling, the type of node must be identified.
 
A '''node''' is any point at which [[line|lines]] meet.  At each such point in [[relational network theory|relational network]] modeling, the type of node must be identified.
Nodes used in this form of [[relational network notation]] differ from one another according to three dimensions of contrast:
+
Nodes used in this form of relational network notation differ from one another according to three dimensions of contrast:
  
 
* ''Upward'' vs. ''downward'' orientation.  Downward is toward expression.  Upward is toward meaning or function.  For example, a lexicogrammatical node might point upward toward the sememic stratum or downward toward the phonological.
 
* ''Upward'' vs. ''downward'' orientation.  Downward is toward expression.  Upward is toward meaning or function.  For example, a lexicogrammatical node might point upward toward the sememic stratum or downward toward the phonological.
 
* ''[[AND node|AND]] vs. [[OR node|OR]].
 
* ''[[AND node|AND]] vs. [[OR node|OR]].
 
* ''Ordered'' vs. ''unordered''.
 
* ''Ordered'' vs. ''unordered''.
 +
 +
Node types are also distinguished from one another on the basis of how they treat incoming activation.
  
 
Each node has a ''singular'' side to which one line is connected, and a ''plural side'' to which two or more lines connect.  With a few exceptions, nodes in compact notation are bidirectional, capable of carrying activation in either direction.
 
Each node has a ''singular'' side to which one line is connected, and a ''plural side'' to which two or more lines connect.  With a few exceptions, nodes in compact notation are bidirectional, capable of carrying activation in either direction.
 +
 +
Another type of node is the [[tactic connector]], also known as a ''diamond node''.
  
 
=== In Narrow Notation ===
 
=== In Narrow Notation ===
Line 22: Line 26:
 
* The ''junction'' node, in which activation comes from one or more lines on the plural side and may continue on the singular side.
 
* The ''junction'' node, in which activation comes from one or more lines on the plural side and may continue on the singular side.
  
The AND/OR difference is represented in narrow notation as a difference in threshold.  Narrow notation has no distinction between ordered and unordered nodes; an account of ordering is provided by combinations of narrow elements, including additional ones, like [[inhibitory connection|inhibitory connections]].
+
The AND/OR difference is represented in narrow notation as a difference in threshold. (Cf. [[threshold node]].) Narrow notation has no distinction between ordered and unordered nodes; an account of ordering is provided by combinations of narrow elements, including additional ones, like [[inhibitory connection|inhibitory connections]].
  
 
=== Sources ===
 
=== Sources ===
  
* Lamb, Sydney M., [http://www.benjamins.com/cgi-bin/t_bookview.cgi?bookid=CILT%20170 Pathways of the Brain: The Neurocognitive Basis of Language], John Benjamins, 1999.
+
*[[Sydney M. Lamb|Lamb, Sydney M.]]. 1999. ''[http://www.benjamins.com/cgi-bin/t_bookview.cgi?bookid=CILT%20170 Pathways of the Brain: The Neurocognitive Basis of Language].''  Philadelphia: John Benjamins.
 +
 
  
{{cats}}{{format}}
+
{{dc}}
 +
[[Category:En]]
 +
[[Category:DICT]]
 +
[[Category:Grammar]]
 +
[[Category:Stratificational_Grammar]]

Latest revision as of 06:31, 2 December 2017

Node in neurocognitive linguistics has two senses, both of which are defined in this article:

In Compact Notation

A node is any point at which lines meet. At each such point in relational network modeling, the type of node must be identified. Nodes used in this form of relational network notation differ from one another according to three dimensions of contrast:

  • Upward vs. downward orientation. Downward is toward expression. Upward is toward meaning or function. For example, a lexicogrammatical node might point upward toward the sememic stratum or downward toward the phonological.
  • AND vs. OR.
  • Ordered vs. unordered.

Node types are also distinguished from one another on the basis of how they treat incoming activation.

Each node has a singular side to which one line is connected, and a plural side to which two or more lines connect. With a few exceptions, nodes in compact notation are bidirectional, capable of carrying activation in either direction.

Another type of node is the tactic connector, also known as a diamond node.

In Narrow Notation

A node in narrow notation is part of an account of the internal structure of a node of compact notation. The one-way nodes in narrow notation are of two types:

  • The branching node, in which activation branches out from the singular side to the plural side.
  • The junction node, in which activation comes from one or more lines on the plural side and may continue on the singular side.

The AND/OR difference is represented in narrow notation as a difference in threshold. (Cf. threshold node.) Narrow notation has no distinction between ordered and unordered nodes; an account of ordering is provided by combinations of narrow elements, including additional ones, like inhibitory connections.

Sources