Spatiotemporally varying visual hallucinations: II. Spectral classification and comparison with theory

H Henke; P A Robinson; P M Drysdale

doi:10.1016/j.jtbi.2014.05.024

Spatiotemporally varying visual hallucinations: II. Spectral classification and comparison with theory

J Theor Biol. 2014 Sep 21:357:210-9. doi: 10.1016/j.jtbi.2014.05.024. Epub 2014 May 27.

Authors

H Henke¹, P A Robinson², P M Drysdale¹

Affiliations

¹ School Of Physics, The University Of Sydney, Sydney, New South Wales 2006, Australia; Brain Dynamics Center, Westmead Millennium Institute, The University Of Sydney, Westmead, New South Wales 2145, Australia.
² School Of Physics, The University Of Sydney, Sydney, New South Wales 2006, Australia; Brain Dynamics Center, Westmead Millennium Institute, The University Of Sydney, Westmead, New South Wales 2145, Australia; Center for Integrative Brain Function, University of Sydney, New South Wales 2006, Australia; Center for Integrative Research and Understanding of Sleep, 431 Glebe Point Rd., Glebe, New South Wales 2037, Australia; Cooperative Research Center for Alertness, Safety, and Productivity, University of Sydney, New South Wales 2006, Australia; Neurosleep, 431 Glebe Point Rd., Glebe, New South Wales 2037, Australia. Electronic address: robinson@physics.usyd.edu.au.

PMID: 24874516
DOI: 10.1016/j.jtbi.2014.05.024

Abstract

In order to better understand the nature of visual hallucinations, and to test predictions of spatiotemporally oscillating hallucinations from a recent corticothalamic model of visual dynamics, clinical descriptions of hallucinations are used to establish boundaries on the spatiotemporal frequencies observed in various disorders. Detailed comparisons with hallucinations during migraine aura demonstrate that key features are consistent with corticothalamic origin and specific abnormalities, but underline the need for more detailed quantitative data to be obtained on temporally oscillating hallucinations more generally.

Keywords: Migraine aura; Model; Neural field theory; Oscillations.

Publication types

Comparative Study
Research Support, Non-U.S. Gov't
Review

MeSH terms

Cerebral Cortex / physiopathology*
Hallucinations / physiopathology*
Humans
Models, Neurological*
Thalamus / physiopathology*