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Initial destination of the disaccommodation step response.
Vision Res. 2006 Jun; 46(12):1959-72.VR

Abstract

Peak velocity and peak acceleration of disaccommodation step responses remain invariant of response magnitude for a constant starting position and they increase linearly with proximity of starting position. This suggests that disaccommodation response is initiated towards an initial (default) destination and is switched mid-flight to attain the desired final destination. The dioptric location of initial destination was estimated from the x-intercept of regression of peak velocity on response starting position. The x-intercept correlated well with subject's cycloplegic refractive state and poorly with their dark focus of accommodation. Altering the dark focus by inducing fatigue in the accommodative system did not alter the x-intercept. These observations suggest that cycloplegic refractive state is a good behavioral correlate of initial destination of disaccommodation step responses.

Authors+Show Affiliations

School of Optometry, University of California at Berkeley, 94720, USA.No affiliation info available

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural

Language

eng

PubMed ID

16427109

Citation

Bharadwaj, Shrikant R., and Clifton M. Schor. "Initial Destination of the Disaccommodation Step Response." Vision Research, vol. 46, no. 12, 2006, pp. 1959-72.
Bharadwaj SR, Schor CM. Initial destination of the disaccommodation step response. Vision Res. 2006;46(12):1959-72.
Bharadwaj, S. R., & Schor, C. M. (2006). Initial destination of the disaccommodation step response. Vision Research, 46(12), 1959-72.
Bharadwaj SR, Schor CM. Initial Destination of the Disaccommodation Step Response. Vision Res. 2006;46(12):1959-72. PubMed PMID: 16427109.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Initial destination of the disaccommodation step response. AU - Bharadwaj,Shrikant R, AU - Schor,Clifton M, Y1 - 2006/01/19/ PY - 2005/07/12/received PY - 2005/11/14/revised PY - 2005/11/24/accepted PY - 2006/1/24/pubmed PY - 2006/6/30/medline PY - 2006/1/24/entrez SP - 1959 EP - 72 JF - Vision research JO - Vision Res. VL - 46 IS - 12 N2 - Peak velocity and peak acceleration of disaccommodation step responses remain invariant of response magnitude for a constant starting position and they increase linearly with proximity of starting position. This suggests that disaccommodation response is initiated towards an initial (default) destination and is switched mid-flight to attain the desired final destination. The dioptric location of initial destination was estimated from the x-intercept of regression of peak velocity on response starting position. The x-intercept correlated well with subject's cycloplegic refractive state and poorly with their dark focus of accommodation. Altering the dark focus by inducing fatigue in the accommodative system did not alter the x-intercept. These observations suggest that cycloplegic refractive state is a good behavioral correlate of initial destination of disaccommodation step responses. SN - 0042-6989 UR - https://www.unboundmedicine.com/medline/citation/16427109/Initial_destination_of_the_disaccommodation_step_response_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0042-6989(05)00664-4 DB - PRIME DP - Unbound Medicine ER -