Stimulus-Response Curves in Sensory Neurons: How to Find the Stimulus Measurable with the Highest Precision

Lánský, Petr; Pokora, Ondřej; Rospars, Jean-Pierre

doi:10.1007/978-3-540-75555-5_32

Cited by 2 publications

(2 citation statements)

References 30 publications

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“…Clearly the shape must reflect the construct and limitations of the physical mechanism underlying perception, that is, it must reflect the neural activity in the task relevant areas of the brain. It has previously been demonstrated that individual sensory neurons show response functions (firing rate vs. stimulus intensity) that closely resemble the psychometric function seen in detection tasks, such as the logistic distribution (Lansky, Pokora, & Rospars, 2007). In NTVA, which is a neural interpretation of TVA (Bundesen, Habekost, & Kyllingsbaek, 2005), it is assumed that the rate at which stimuli are perceptually processed is proportional to neural firing rates in the visual cortex.…”

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confidence: 98%

The effect of exposure duration on visual character identification in single, whole, and partial report.

Petersen

Andersen²

2012

Journal of Experimental Psychology: Human Perception and Perfor

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The psychometric function of single-letter identification is typically described as a function of stimulus intensity. However, the effect of stimulus exposure duration on letter identification remains poorly described. This is surprising because the effect of exposure duration has played a central role in modeling performance in whole and partial report (Shibuya & Bundesen, 1988). Therefore, we experimentally investigated visual letter identification as a function of exposure duration. We compared the exponential, the gamma, and the Weibull psychometric functions, all with a temporal offset included, as well as the ex-Gaussian, the log-logistic, and finally the squared-logistic, which is a psychometric function that to our knowledge has not been described before. The log-logistic and the squared-logistic psychometric function fit well to experimental data. Also, we conducted an experiment to test the ability of the psychometric functions to fit single-letter identification data, at different stimulus contrast levels; also here the same psychometric functions prevailed. Finally, after insertion into Bundesen's Theory of Visual Attention (Bundesen, 1990), the same psychometric functions enable closer fits to data from a previous whole and partial report experiment.

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mentioning

confidence: 98%

The effect of exposure duration on visual character identification in single, whole, and partial report.

Petersen

Andersen²

2012

Journal of Experimental Psychology: Human Perception and Perfor

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“…, x d ) but x j are assumed to be fixed. In practice, stimulus-response curves are oftentimes strictly monotone (increasing or decreasing [11,16]), meaning that their first derivative with respect to the input x j does not change sign on suitably chosen intervals. Another common feature of stimulus-response curves is their sigmoidal form [3], characterized by a bell-shaped first derivative, as will be made precise later.…”

Section: Sigmoidal Stimulus-response Curvesmentioning

confidence: 99%

Finite-time Lyapunov exponents and metabolic control coefficients for threshold detection of stimulus–response curves

Duc

Chávez

Doàn

et al. 2016

Journal of Biological Dynamics

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In biochemical networks transient dynamics plays a fundamental role, since the activation of signalling pathways is determined by thresholds encountered during the transition from an initial state (e.g. an initial concentration of a certain protein) to a steady-state. These thresholds can be defined in terms of the inflection points of the stimulus-response curves associated to the activation processes in the biochemical network. In the present work, we present a rigorous discussion as to the suitability of finite-time Lyapunov exponents and metabolic control coefficients for the detection of inflection points of stimulus-response curves with sigmoidal shape. ARTICLE HISTORY

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Stimulus-Response Curves in Sensory Neurons: How to Find the Stimulus Measurable with the Highest Precision

Cited by 2 publications

References 30 publications

The effect of exposure duration on visual character identification in single, whole, and partial report.

The effect of exposure duration on visual character identification in single, whole, and partial report.

Finite-time Lyapunov exponents and metabolic control coefficients for threshold detection of stimulus–response curves

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