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Cortical versus Subcortical Vision
Note the difference in the number of areas involved in subcortical vision compared to cortical vision.
We know that the retinogeniculostriate pathway is the target of ~90% of the axons
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Gross Anatomy of the Eye
Pupil: The opening that allows light to enter the eye and reach the retina.
Iris: A circular muscle that controls the size of the pupil.
Cornea: The transparent surface that covers the pupil and iris.
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Cortical Control over Movement of the Eyes:
The Frontal Eye Field and Voluntary Saccades
Experiment: Effects of TMS over cortex on saccadic eye movements
The contributions of the superior prefrontal
cortex (SPFC) and the superior pariet
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Dorsal versus Ventral Pathways
Multiple representations of the visual world exist in visual cortex.
Beyond the striate cortex lie the extrastriate areas, which are higher-order visual areas that also conta
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Subcortical Control over Movement of the Eyes:
The Superior Colliculus and Oculomotor Reflexes
Experiment: Activity of neurons in the deeper layers of the superior colliculus
This experiment recorded from neurons in
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Cells of the Central Nervous System
What is the brain made of?
Although cognitive neuroscience focuses on the activity of neurons, neurons account for only about
10% of our brain cells.
Glial cells account for about 90% of our brain ce
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Note that each neuron can receive input from many other neurons and can output to many other neurons.
Sufficient input to the postsynaptic neuron can trigger an action potential, causing the e
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Introduction to the Central Nervous System
I. Overview of the CNS
Central Nervous System (CNS)
Brain cortex and subcortex
Spinal cord housed in the spinal column; sensory information enters the CNS via the dorsal
portion of the spinal
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Auditory System: Sense of Hearing
How are sounds from our environment translated into neural signals?
Hearing commences with the capture of sound waves by the ear.
Within the ear, auditory receptors convert the mechanical energy
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Methods in Cognitive Neuroscience
What is Cognitive Neuroscience?
Cognitive neuroscience is a branch of neuroscience that focuses on brain function and brain
dysfunction (neuropsychology) on a cognitive level.
Cognitive neuroscientists r
AP Computer Science
2 November 2016
Flash Talks on Internet Censorship
The internet as of right now is a free service open to the public without any monitoring
system. This however, might be an issue to those who abuse the intern