Linked Life Data

15134766

Source:http://linkedlifedata.com/resource/pubmed/id/15134766

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2004-5-11
pubmed:abstractText
Saccadic chronostasis refers to the subjective temporal lengthening of the first visual stimulus perceived after an eye movement. It has been quantified using a duration discrimination task. Most models of human duration discrimination hypothesise an internal clock. These models could explain chronostasis as a transient increase in internal clock speed due to arousal following a saccade, leading to temporal overestimation. Two experiments are described which addressed this hypothesis by parametrically varying the duration of the stimuli that are being judged. Changes in internal clock speed predict chronostasis effects proportional to stimulus duration. No evidence for proportionality was found. Two further experiments assessed the appropriateness of the control conditions employed. Results indicated that the chronostasis effect is constant across a wide range of stimulus durations and does not reflect the pattern of visual stimulation experienced during a saccade, suggesting that arousal is not critical. Instead, alternative processes, such as one affecting the onset of timing (i.e., the time of internal clock switch closure) are implicated. Further research is required to select between these alternatives.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
1053-8100
pubmed:author
pubmed:issnType
Print
pubmed:volume
13
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
373-90
pubmed:dateRevised
2007-8-13
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Action, arousal, and subjective time.
pubmed:affiliation
Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, Queen Square, U.C.L., London WC1N 3BG, UK. k.yarrow@ion.ucl.ac.uk
pubmed:publicationType
Journal Article, Clinical Trial, Randomized Controlled Trial