Change search
ReferencesLink to record
Permanent link

Direct link
On the time course of short-term forgetting: A human experimental model for the sense of balance
KTH, School of Technology and Health (STH), Basic Science and Biomedicine, Environmental Physiology. KTH, School of Technology and Health (STH), Centres, Swedish Aerospace Physiology Centre, SAPC.
KTH, School of Technology and Health (STH), Basic Science and Biomedicine, Environmental Physiology. KTH, School of Technology and Health (STH), Centres, Swedish Aerospace Physiology Centre, SAPC.
2015 (English)In: Cognitive Neurodynamics, ISSN 1871-4080, E-ISSN 1871-4099, Vol. 10, no 1, 7-22 p.Article in journal (Refereed) Published
Abstract [en]

The primary aim of this study was to establish whether the decline of the memory of an angular displacement, detected by the semicircular canals, is best characterized by an exponential function or by a power function. In 27 subjects a conflict was created between the semicircular canals and the graviceptive systems. Subjects were seated, facing forwards, in the gondola of a large centrifuge. The centrifuge was accelerated from stationary to 2.5Gz. While the swing out of the gondola (66°) during acceleration constitutes a frontal plane angular-displacement stimulus to the semicircular canals, the graviceptive systems persistently signal that the subject is upright. During 6 min at 2.5Gz the perceived head and body position was recorded; in darkness the subject repeatedly adjusted the orientation of a luminous line so that it appeared to be horizontal. Acceleration of the centrifuge induced a sensation of tilt which declined with time in a characteristic way. A three-parameter exponential function (Y = Ae−bt + C) and a power function (Y = At−b + C) were fitted to the data points. The inter-individual variability was considerable. In the vast majority of cases, however, the exponential function provided a better fit (in terms of RMS error) than the power function. The mean exponential function was: y = 27.8e−0.018t + 0.5°, where t is time in seconds. Findings are discussed with connection to possible underlying neural mechanisms; in particular, the head-direction system and short-term potentiation and persistent action potential firing in the hippocampus are considered.

Place, publisher, year, edition, pages
Springer, 2015. Vol. 10, no 1, 7-22 p.
Keyword [en]
Short-term memory, Spatial memory, Spatial orientation, Vestibular memory, Vestibular psychophysics
National Category
Physiology
Identifiers
URN: urn:nbn:se:kth:diva-179348DOI: 10.1007/s11571-015-9362-0ISI: 000368535200002ScopusID: 2-s2.0-84955198736OAI: oai:DiVA.org:kth-179348DiVA: diva2:882654
Note

QC 20160128. QC 20160220

Available from: 2015-12-15 Created: 2015-12-15 Last updated: 2016-02-20Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Tribukait, ArneEiken, Ola
By organisation
Environmental PhysiologySwedish Aerospace Physiology Centre, SAPC
In the same journal
Cognitive Neurodynamics
Physiology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 11 hits
ReferencesLink to record
Permanent link

Direct link