Evidence from Lightness and Color

2019 ◽  
pp. 75-88
Author(s):  
Dale Purves
Keyword(s):  
Physical World ◽  
Sensory Systems ◽  
Frequency Of Occurrence ◽  
Brain System ◽  
Ranking Theory ◽  
Physical Measurements ◽  
The Senses ◽  
Successful Behavior ◽  
The Brain

What, then, is the evidence that sensory systems link stimulus inputs to useful responses empirically as a means of generating successful behavior in a physical world that the senses cannot measure? This chapter focuses on evidence derived from studies of lightness and color in vision, the brain system that has been most extensively studied in this regard. The argument here, and in the following chapters that consider other perceptual qualities and systems, is that evolved circuitry based on accumulated experience with frequency of occurrence of biologically useful stimuli accomplishes this feat. This strategy, called empirical ranking theory, explains why the qualities we perceive are always at odds with physical measurements.

scholarly journals Contribution of linear and nonlinear mechanisms to predictive motion estimation

2021 ◽  
Author(s):  
Belle Liu ◽  
Arthur Hong ◽  
Fred Rieke ◽  
Michael B. Manookin
Keyword(s):  
Neural Circuits ◽  
Sensory Systems ◽  
Neural Systems ◽  
Sparse Signal ◽  
Response Suppression ◽  
Delayed Response ◽  
Signal Integration ◽  
Linear And Nonlinear ◽  
Successful Behavior ◽  
The Brain

Successful behavior relies on the ability to use information obtained from past experience to predict what is likely to occur in the future. A salient example of predictive encoding comes from the vertebrate retina, where neural circuits encode information that can be used to estimate the trajectory of a moving object. Predictive computations should be a general property of sensory systems, but the features needed to identify these computations across neural systems are not well understood. Here, we identify several properties of predictive computations in the primate retina that likely generalize across sensory systems. These features include calculating the derivative of incoming signals, sparse signal integration, and delayed response suppression. These findings provide a deeper understanding of how the brain carries out predictive computations and identify features that can be used to recognize these computations throughout the brain.

Senses of Vibration

2012 ◽  
Author(s):  
Shelly Trower
Keyword(s):  
Sensory Experience ◽  
Cultural Imaginary ◽  
Wide Range ◽  
History Of ◽  
The Senses ◽  
To Come ◽  
The Brain

The study of the senses has become a rich topic in recent years. Senses of Vibration explores a wide range of sensory experience and makes a decisive new contribution to this growing field by focussing not simply on the senses as such, but on the material experience - vibration - that underpins them. This is the first book to take the theme of vibration as central, offering an interdisciplinary history of the phenomenon and its reverberations in the cultural imaginary. It tracks vibration through the work of a wide range of writers, including physiologists (who thought vibrations in the nerves delivered sensations to the brain), physicists (who claimed that light, heat, electricity and other forms of energy were vibratory), spiritualists (who figured that spiritual energies also existed in vibratory form), and poets and novelists from Coleridge to Dickens and Wells. Senses of Vibration is a work of scholarship that cuts through a range of disciplines and will reverberate for many years to come.

scholarly journals On route with harbor seals – how their senses contribute to orientation, navigation and foraging

Neuroforum ◽  
2018 ◽  
Vol 24 (4) ◽  
pp. A183-A195
Author(s):  
Frederike D. Hanke ◽  
Guido Dehnhardt
Keyword(s):  
Model Organism ◽  
Sensory Systems ◽  
Harbor Seals ◽  
Coastal Regions ◽  
Sea Lions ◽  
Research Questions ◽  
The Senses ◽  
New Research

Summary Summary: Seals and sea lions are well-oriented in their habitat, the coastal regions and oceans, and are, moreover, successful hunters. During their movements between haul-out places and foraging grounds as well as during foraging, the sensory systems of seals and sea lions provide useful information, although the animals, and thus their sensory systems, face considerable challenges in their habitat and due to their amphibious lifestyle. In this review, in the first chapter, we compiled and later (chapter 4) discuss the information on the senses of seals and sea lions in general and their specific adaptations to habitat and lifestyle in particular. We hereby focus on the senses of harbor seals. Harbor seals turned into a model organism regarding the sensory systems due to intensive sensory research of the last decades. In the second and third chapter, the sensory basics are put into the context of orientation, navigation, and foraging. This allows formulating new research questions, such as where and how the information from different senses is integrated.

The Biology Of Physics: What The Brain Reveals About Our Understanding Of The Physical World

2009 ◽  
Author(s):  
Kevin Niall Dunbar ◽  
Mel Sabella ◽  
Charles Henderson ◽  
Chandralekha Singh
Keyword(s):  
Physical World ◽  
The Brain

scholarly journals The Retina: A Window into the Brain

Cells ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 3269
Author(s):  
Maurice Ptito ◽  
Maxime Bleau ◽  
Joseph Bouskila
Keyword(s):  
Sensory Systems ◽  
The Brain

In the course of evolution, animals have obtained the capacity to perceive and encode their environment via the development of sensory systems such as touch, olfaction, audition, and vision [...]

scholarly journals Comparing supervised and unsupervised approaches to emotion categorization in the human brain, body, and subjective experience.

2020 ◽  
Author(s):  
Bahar Azari ◽  
Christiana Westlin ◽  
Ajay Satpute ◽  
J. Benjamin Hutchinson ◽  
Philip A. Kragel ◽  
...  
Keyword(s):  
Human Brain ◽  
Subjective Experience ◽  
A Priori ◽  
Ground Truth ◽  
Test Case ◽  
Physical Measurements ◽  
Supervised Classifiers ◽  
Emotional Episodes ◽  
Emotion Labels ◽  
The Brain

Machine learning methods provide powerful tools to map physical measurements to scientific categories. But are such methods suitable for discovering the ground truth about psychological categories? We use the science of emotion as a test case to explore this question. In studies of emotion, researchers use supervised classifiers, guided by emotion labels, to attempt to discover biomarkers in the brain or body for the corresponding emotion categories. This practice relies on the assumption that the labels refer to objective categories that can be discovered. Here, we critically examine this approach across three distinct datasets collected during emotional episodes- measuring the human brain, body, and subjective experience- and compare supervised classification studies with those from unsupervised clustering in which no a priori labels are assigned to the data. We conclude with a set of recommendations to guide researchers towards meaningful, data-driven discoveries in the science of emotion and beyond.

A Few More Thoughts About Feelings

2014 ◽  
Author(s):  
A. D. (Bud) Craig
Keyword(s):  
Brain Structures ◽  
Sensory Systems ◽  
The Brain

This concluding chapter addresses some of the larger issues relevant to the ideas presented in this book. These issues include the purpose of feelings, the brain structures required in order to experience feelings and which species have them, the kinds of feelings that other species might experience, why feelings seem to propel behavior, and whether Watson—the computer that won the Jeopardy game—might ever experience feelings. The chapter then examines the concept of graded sentience. This concept seems to provide the basis for graded feelings of interoceptive conditions, depending on the level of refinement of the homeostatic motor and sensory systems.

Ātman and its transition to worldly existence

2016 ◽  
Author(s):  
Greg Bailey
Keyword(s):  
Economic Structure ◽  
Physical World ◽  
Central Concept ◽  
The World ◽  
The Senses ◽  
Ontological Completeness

The central concept of atman was acknowledged to be 'ungraspable and unthinkable'. This problem is related to the contrast between the ontological completeness of atman and the ontological incompleteness of the physical world of the senses and mind. In order to understand the entrance of atman into the world of imperfect existence, there is a need for precise philology, and in particular the meanings of the verbs as ('being') and bhu ('becoming'), and the prefix vi-. The ontological issue is then related to socio-economic structure.

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