Wikia

Psychology Wiki

Changes: Sensory thresholds

Edit

Back to page

 
Line 1: Line 1:
 
{{ExpPsy}}
 
{{ExpPsy}}
'''Sensory threshold''' is a theoretical concept used in [[psychophysics]]. A [[stimulus (physiology)|stimulus]] that is less intense than the sensory threshold will not elicit any sensation. The concept can be applied to all senses as in:
+
'''Sensory threshold''' is a theoretical concept used in [[psychophysics]]. A [[stimulus (physiology)|stimulus]] that is less intense than the sensory threshold will not elicit any sensation.
 
*[[Auditory thresholds]]
 
*[[Olfactory thresholds]]
 
*[[Pain thresholds]]
 
*[[Vibrotactile thresholds]]
 
*[[Visual thresholds]]
 
 
 
 
   
Line 10: Line 10:
   
 
 
  +
The concept can be applied to all senses as in:
  +
  +
==[[Auditory thresholds]]==
  +
*'''[[Auditory absolute threshold]]:''' the lowest level at which a stimulus can be detected.
  +
*'''[[Auditory recognition threshold]]:''' the level at which a stimulus can not only be detected but also recognised.
  +
*'''[[Auditory just noticeable difference|Differential threshold]]''' the level at which an increase in a detected stimulus can be perceived.
  +
*'''[[Auditory terminal threshold]]:''' the level beyond which a stimulus is no longer detected.
  +
  +
==[[Olfactory thresholds]]==
  +
*'''[[Olfactory absolute threshold]]:''' the lowest level at which a stimulus can be detected.
  +
*'''[[Olfactory recognition threshold]]:''' the level at which a stimulus can not only be detected but also recognised.
  +
*'''[[Olfactory just noticeable difference|Differential threshold]]''' the level at which an increase in a detected stimulus can be perceived.
  +
*'''[[Olfactory terminal threshold]]:''' the level beyond which a stimulus is no longer detected.
  +
  +
==[[Vibrotactile thresholds]]==
  +
*'''[[Vibrotactile absolute threshold]]:''' the lowest level at which a stimulus can be detected.
  +
*'''[[Vibrotactile recognition threshold]]:''' the level at which a stimulus can not only be detected but also recognised.
  +
*'''[[Vibrotactile just noticeable difference|Differential threshold]]''' the level at which an increase in a detected stimulus can be perceived.
  +
*'''[[Vibrotactile terminal threshold]]:''' the level beyond which a stimulus is no longer detected.
  +
  +
==[[Visual thresholds]]==
  +
*'''[[Visual absolute threshold]]:''' the lowest level at which a stimulus can be detected.
  +
*'''[[Visual recognition threshold]]:''' the level at which a stimulus can not only be detected but also recognised.
  +
*'''[[Visual just noticeable difference|Differential threshold]]''' the level at which an increase in a detected stimulus can be perceived.
  +
*'''[[Visual terminal threshold]]:''' the level beyond which a stimulus is no longer detected.
   
 
==In aviation==
 
==In aviation==

Latest revision as of 12:40, October 22, 2011

Assessment | Biopsychology | Comparative | Cognitive | Developmental | Language | Individual differences | Personality | Philosophy | Social |
Methods | Statistics | Clinical | Educational | Industrial | Professional items | World psychology |

Cognitive Psychology: Attention · Decision making · Learning · Judgement · Memory · Motivation · Perception · Reasoning · Thinking  - Cognitive processes Cognition - Outline Index


Sensory threshold is a theoretical concept used in psychophysics. A stimulus that is less intense than the sensory threshold will not elicit any sensation.


Several different sensory thresholds have been defined;


The concept can be applied to all senses as in:

Auditory thresholdsEdit

Olfactory thresholdsEdit

Vibrotactile thresholdsEdit

Visual thresholdsEdit

In aviationEdit

Aviation use. When related to motion in any of the possible six degrees of freedom (6-DoF), the fact that sensory thresholds exist is why it is essential that aircraft have blind-flying instruments. Sustained flight in cloud is not possible by `seat-of-the-pants' cues alone since errors build up due to aircraft movements below the pilot's sensory threshold, ultimately leading to loss of control.

  • In flight simulators with motion platforms, the motion sensory thresholds are utilised in the technique known as `acceleration-onset cueing'. This is where a motion platform, having made the initial acceleration that is sensed by the simulator crew, the platform is re-set to approximately its neutral position by being moved at a rate below the sensory threshold and is then ready to respond to the next acceleration demanded by the simulator computer.

See alsoEdit


This page uses Creative Commons Licensed content from Wikipedia (view authors).

Around Wikia's network

Random Wiki