optic nerve Striate Cortex (V1) Hubel & Wiesel 1 deg.

Slides:

Advertisements

Similar presentations

Chapter 4: The Visual Cortex and Beyond

Advertisements

Read this article for Friday next week [1]Chelazzi L, Miller EK, Duncan J, Desimone R. A neural basis for visual search in inferior temporal cortex. Nature.

Attention and neglect.

V1 Physiology. Questions Hierarchies of RFs and visual areas Is prediction equal to understanding? Is predicting the mean responses enough? General versus.

The Visual System: Feature Detection Model Lesson 17.

Gabor Filter: A model of visual processing in primary visual cortex (V1) Presented by: CHEN Wei (Rosary) Supervisor: Dr. Richard So.

Central Visual Processes. Anthony J Greene2 Central Visual Pathways I.Primary Visual Cortex Receptive Field Columns Hypercolumns II.Spatial Frequency.

optic nerve Striate Cortex (V1) Hubel & Wiesel 1 deg.

Attention-Dependent Hemifield Asymmetries When Judging Numerosity Nestor Matthews & Sarah Theobald Department of Psychology, Denison University, Granville.

Visual Fields KW Fovea on Cortex KW 8-22 Occipital Lobes are Independent KW 8-24.

Lesions of Retinostriate Pathway Lesions (usually due to stroke) cause a region of blindness called a scotoma Identified using perimetry note macular sparing.

Chapter 6 The Visual System

2002/01/21PSCY , Term 2, Copyright Jason Harrison, The Brain from retina to extrastriate cortex.

Exam in 12 days in class assortment of question types including written answers.

Question Examples If you were a neurosurgeon and you needed to take out part of the cortex of a patient, which technique would you use to identify the.

Exam 1 week from today in class assortment of question types including written answers.

Adaptation Properties of Macaque MT Neurons Adam Kohn Matt A. Smith Najib Majaj J. Anthony Movshon.

Reinagel lectures 2006 Take home message about LGN 1. Lateral geniculate nucleus transmits information from retina to cortex 2. It is not known what computation.

Visual Processing Structure of the Retina Lateral Inhibition Receptive Fields.

The visual system IV The visual cortices. The primary visual pathway From perret-optic.ch.

Functional Neuroanatomy and Applications IGERT Bootcamp September 2006.

Brain Theory and Artificial Intelligence

Visual Sensation & Perception How do we see?. Structure of the eye.

Visual Cognition I basic processes. What is perception good for? We often receive incomplete information through our senses. Information can be highly.

A.F. Lamme and Pieter R. Roelfsema

The visual system Lecture 1: Structure of the eye

Adaptation 1.Adaptation – examples and definitions 2.Adaptation as efficient coding 3.A tradeoff between sensitivity and efficiency 4.Adaptation and perception.

Laurent Itti: CS599 – Computational Architectures in Biological Vision, USC Lecture 5: Introduction to Vision 2 1 Computational Architectures in.

Visual Cortex: V1. V1 lateral view medial view calcarine sulcus.

Cracking the Population Code Dario Ringach University of California, Los Angeles.

Nomenclature or names of compounds Alkanes. Nomenclature or names of compounds Alkanes.

Chapter 8: Perceiving Motion

Neural Information in the Visual System By Paul Ruvolo Bryn Mawr College Fall 2012.

Sensory systems basics. Sensing the external world.

1 Computational Vision CSCI 363, Fall 2012 Lecture 3 Neurons Central Visual Pathways See Reading Assignment on "Assignments page"

THE VISUAL SYSTEM: EYE TO CORTEX Outline 1. The Eyes a. Structure b. Accommodation c. Binocular Disparity 2. The Retina a. Structure b. Completion c. Cone.

Occipital Lobe Videos: –Brain modules 8,9,10, 11 –Consciousness- Blindsight.

Projects: 1.Predictive coding in balanced spiking networks (Erwan Ledoux). 2.Using Canonical Correlation Analysis (CCA) to analyse neural data (David Schulz).

fMRI Methods Lecture 12 – Adaptation & classification

Temporal dynamics of a neural solution to the aperture problem in visual area MT of macaque brain  Pack & Born Nature (2001) Harvard Medical School.

Chapter 8: Perceiving Motion

Figure 2.7. Number of neural impulses in selected single cells of the monkey brain when shown differing pictures. These neurons fire the most when a face.

Neuronal Adaptation to Visual Motion in Area MT of the Macaque -Kohn & Movshon 지각 심리 전공 박정애.

Chapter 3: Neural Processing and Perception. Neural Processing and Perception Neural processing is the interaction of signals in many neurons.

Biological Modeling of Neural Networks: Week 12 – Decision models: Competitive dynamics Wulfram Gerstner EPFL, Lausanne, Switzerland 12.1 Review: Population.

Ascending Visual Pathways

Two Mean Neuronal Waveforms Distribution of Spike Widths Interaction of Inhibitory and Excitatory Neurons During Visual Stimulation David Maher Department.

Sensory Neural Systems 5 February 2008 Rachel L. León

The Human Visual System Background on Vision Human vision – the best system around Deep network models.

Physics Acoustics for Musicians selected slides, March 5, 2002 Loudness at different frequencies Critical band Masking The ear Neurological response.

Chapter 2 Cognitive Neuroscience. Some Questions to Consider What is cognitive neuroscience, and why is it necessary? How is information transmitted from.

1 Perception and VR MONT 104S, Spring 2008 Lecture 3 Central Visual Pathways.

Chapter 2 Cognitive Neuroscience. Some Questions to Consider What is cognitive neuroscience, and why is it necessary? How is information transmitted from.

Visual Sensory System.

Primary Visual Pathway

Early Processing in Biological Vision

Visual Cortex Vision Science Lectures in Ophthalmology Curtis Baker.

Physiology of Photoreceptors Vertebrate photoreceptors hyperpolarize and produce graded potentials Photoreceptors use glutamate as transmitter.

Ascending Visual Pathways

PSYCH 2220 Perception Lecture 5.

Mind, Brain & Behavior Wednesday February 12, 2003.

Coding of Odors by a Receptor Repertoire

The Visual System: Feature Detection Model

Fundamentals of Sensation and Perception

Neural Mechanisms of Visual Motion Perception in Primates

Suppression without Inhibition in Visual Cortex

Ψ Sensation & Perception.

From Functional Architecture to Functional Connectomics

Coding of Odors by a Receptor Repertoire

Week 14: Neurobiology of Vision Part 2

Presentation transcript:

optic nerve

Striate Cortex (V1) Hubel & Wiesel 1 deg

Hallem & Carlson 2006 (via Rachel)

Hallem & Carlson 2006 amines lactones acids sulfur terpenes aldehydes ketones aromatics alcohols esters Odorant Receptors

Striate Cortex (V1) Hubel & Wiesel 1 deg

Striate Cortex (V1) 1 deg IT face cell Tsao et al. 2006

11 20 faces! Marge Livingstone & Doris Tsao

Distribution of Face Selectivity Indices Marge Livingstone & Doris Tsao

x x x x x x x x x x x x Hubel & Wiesel 1962 LGN Striate Cortex X = excitation = inhibition + + +

R1R1 Sclar & Freeman 1982 response (spikes/s) orientation 80% contrast 40% contrast º+25º0º0º

McAdams & Maunsell 1999 attend in attend out º-60º-30º0º0º30º60º90º V4 response orientation

Kohn & Movshon direction of motion spikes/s adapting direction

Kohn & Movshon direction of motion spikes/s adapting direction

140 spikes/s Early: 65 to 85 ms  = 45°  = 90°  = 135° Late: >150 ms 140 spikes/s Pack & Born 2001

140 spikes/s Early: 65 to 85 ms  = 45°  = 90°  = 135° Late: >150 ms 140 spikes/s Pack & Born 2001

Lorençeau et al. 1993

Message TRANSMITTER SIGNAL RECEIVED SIGNAL NOISE SOURCE RECEIVER Message after Shannon and Weaver 1949 encoder decoder

visual field * Carlos Ponce

Shadlen & Newsome 1994 trial # sp/sec time (ms) Spikes from an MT Neuron: Identical Stimulus, 210 Repeats

Michele Fabre-Thorpe Rapid Scene Perception: Time of 1 st Spike?

x x x x x x x x x x x x Hubel & Wiesel 1962 LGN Striate Cortex X = excitation = inhibition + + +

Attneave 1954

Webster, Mizokami, and Webster 2007