chapter 4 note sheet
... - blindness involves the failure to see fully visible objects or events in a visual display Feature detection theory - bottom-up processing Form perception - top-down processing Subjective contours - a phenomenon whereby contours are perceived where none actually exist, attributed to top-down proces ...
... - blindness involves the failure to see fully visible objects or events in a visual display Feature detection theory - bottom-up processing Form perception - top-down processing Subjective contours - a phenomenon whereby contours are perceived where none actually exist, attributed to top-down proces ...
Lecture 5 - TeachLine
... The primary visual cortex maintains: 1- visual hemifield location map 2- size discrimination (small and large receptive fields) 3- color coding (in monkey; in “blobs”) The primary visual cortex begins selectivity to: ...
... The primary visual cortex maintains: 1- visual hemifield location map 2- size discrimination (small and large receptive fields) 3- color coding (in monkey; in “blobs”) The primary visual cortex begins selectivity to: ...
9.01 - Neuroscience & Behavior Fall 2003 Massachusetts Institute of Technology
... Readings Study Questions LECTURE 27 on Rosenzweig Chapter 8 (pages 281-321) 1. Explain the difference between brightness, hue, and saturation. 2. Describe the functions of the rods, the bipolar cells, and the ganglion cells in the retina. What are some similarities and differences of their electrica ...
... Readings Study Questions LECTURE 27 on Rosenzweig Chapter 8 (pages 281-321) 1. Explain the difference between brightness, hue, and saturation. 2. Describe the functions of the rods, the bipolar cells, and the ganglion cells in the retina. What are some similarities and differences of their electrica ...
MCB105 QUIZ 5 2016 wA
... visual field as juveniles exhibit neuronal plasticity as adults. a) In which neurons was this plasticity shown? [1] OT neurons with both auditory and visual responses b) How is this change measured (explain or draw)? [1] Measure the same OT neuron before and after prism fitting. Compare the visual r ...
... visual field as juveniles exhibit neuronal plasticity as adults. a) In which neurons was this plasticity shown? [1] OT neurons with both auditory and visual responses b) How is this change measured (explain or draw)? [1] Measure the same OT neuron before and after prism fitting. Compare the visual r ...
Slide ()
... Long-range horizontal connections in each layer of the visual cortex integrate information from different parts of the visual field. A. The axons of pyramidal cells extend for many millimeters parallel to the cortical surface. Axon collaterals form connections with other pyramidal cells as well as w ...
... Long-range horizontal connections in each layer of the visual cortex integrate information from different parts of the visual field. A. The axons of pyramidal cells extend for many millimeters parallel to the cortical surface. Axon collaterals form connections with other pyramidal cells as well as w ...
Lesson1 Powerpoint
... external physical forces/energy into electrical impulses that are mediated by neural spikes. Neural “encoding” ...
... external physical forces/energy into electrical impulses that are mediated by neural spikes. Neural “encoding” ...
Document
... external physical forces/energy into electrical impulses that are mediated by neural spikes. Neural “encoding” ...
... external physical forces/energy into electrical impulses that are mediated by neural spikes. Neural “encoding” ...
Blue= rods Green = Cones
... – Process information related to form, movement, depth, small changes in brightness – Connected mostly with rods ...
... – Process information related to form, movement, depth, small changes in brightness – Connected mostly with rods ...
Slide ()
... A. The experimental design includes "bottom-up" and "top-down" retrieval conditions. A monkey was trained to associate a specific object with a prior visual cue. During testing the monkey was shown a visual cue on a screen. After a delay the monkey was then shown one of several objects (choice). The ...
... A. The experimental design includes "bottom-up" and "top-down" retrieval conditions. A monkey was trained to associate a specific object with a prior visual cue. During testing the monkey was shown a visual cue on a screen. After a delay the monkey was then shown one of several objects (choice). The ...
Slide ()
... A. The experimental design includes "bottom-up" and "top-down" retrieval conditions. A monkey was trained to associate a specific object with a prior visual cue. During testing the monkey was shown a visual cue on a screen. After a delay the monkey was then shown one of several objects (choice). The ...
... A. The experimental design includes "bottom-up" and "top-down" retrieval conditions. A monkey was trained to associate a specific object with a prior visual cue. During testing the monkey was shown a visual cue on a screen. After a delay the monkey was then shown one of several objects (choice). The ...
Visual Queries
... target stimuli on the fovea. Accelerate to an angular velocity of 900 degrees per ...
... target stimuli on the fovea. Accelerate to an angular velocity of 900 degrees per ...
Accumulative evidence indicates that microglial cells influence the
... responses to receptive field stimulation. Recent studies have shown that natural movie stimulation beyond the receptive field leads to reduced but more precise neuronal responses. We have established this paradigm in mouse visual cortex where we investigate the interaction of incoming sensory eviden ...
... responses to receptive field stimulation. Recent studies have shown that natural movie stimulation beyond the receptive field leads to reduced but more precise neuronal responses. We have established this paradigm in mouse visual cortex where we investigate the interaction of incoming sensory eviden ...
LSU Seminar Neuroscience Center of Excellence
... The fine-tuning of circuits in sensory cortex requires sensory experience during an early critical period. Visual deprivation (VD) during the critical period has atastrophic effects on visual function, including loss of visual responsiveness to the deprived eye, reduced visual acuity, and loss of tu ...
... The fine-tuning of circuits in sensory cortex requires sensory experience during an early critical period. Visual deprivation (VD) during the critical period has atastrophic effects on visual function, including loss of visual responsiveness to the deprived eye, reduced visual acuity, and loss of tu ...
P200
In neuroscience, the visual P200 or P2 is a waveform component or feature of the event-related potential (ERP) measured at the human scalp. Like other potential changes measurable from the scalp, this effect is believed to reflect the post-synaptic activity of a specific neural process. The P2 component, also known as the P200, is so named because it is a positive going electrical potential that peaks at about 200 milliseconds (varying between about 150 and 275 ms) after the onset of some external stimulus . The distribution of this component in the brain, as measured by electrodes placed across the scalp, is located around the centro-frontal and the parieto-occipital region. It is generally found to be maximal around the vertex (frontal region) of the scalp, however there have been some topographical differences noted in ERP studies of the P2 in different experimental conditions.Research on the visual P2 is at an early stage compared to other more established ERP components and there is much that we still do not know about it. Part of the difficulty of clearly characterizing this component is that it appears to be modulated by a large and diverse number of cognitive tasks. Functionally, there seems to be partial agreement amongst researchers in the field of cognitive neuroscience that the P2 represents some aspect of higher-order perceptual processing, modulated by attention. It is known that the P2 is typically elicited as part of the normal response to visual stimuli and has been studied in relation to visual search and attention, language context information, and memory and repetition effects. The amplitude of the peak of the waveform may be modulated by many different aspects of visual stimuli, which allow it to be used for studies of visual cognition and disease. In general, the P2 may be a part of cognitive matching system that compares sensory inputs with stored memory.