PSYC314 Lecture Notes - Lecture 11: Medial Geniculate Nucleus, Substantia Nigra, Basal Forebrain
22 May 2018
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Vision 3/22
Quiz 12
1. Which statement below about specific path circuits and global circuits in the brain is true
A. Specific circuits are only in the telencephalon
B. Global circuits are in the cortex while specific circuits are in the brain stem
C. Global circuits tend to make specific circuits work better
D. Neurons in global circuits secrete glutamate as a neurotransmitter while specific circuits
secrete acetylcholine as a neurotransmitter
2. The spinal cord motor reflex circuit is comprised of
A. A sensory receptor, sensory neuron, dopaminergic neurons
B. A sensory neuron, autonomic neuron, glutamatergic neurons
C. Sensory receptor, sensory neuron, ascending spinal neuron, motor neuron
D. Sensory receptor, sensory neuron, interneuron, motor neuron
3. An example of a central arousal system is the
A. Basal forebrain cholinergic system
B. Substantia nigra
C. Trisynaptic system of the hippocampus
D. Basal ganglia
4. The fear conditioning circuit in the amygdala involves
A. The superior colliculi, lateral amygdala, central nucleus of the amygdala
B. Lateral amygdala, central nucleus of the amygdala, central periaqueductal gray
C. Medial geniculate nucleus, lateral amygdala, central nucleus of the amygdala
D. Auditory cortex, lateral amygdala, basal amygdala
5. Preganglionic neurons of the sympathetic nervous system secrete __________ while
postganglionic neurons mostly secrete _______
A. Dopamine, serotonin
B. Acetylcholine, acetylcholine
C. Acetylcholine, norepinephrine
D. Norepinephrine, acetylcholine
Problems with vision
find more resources at oneclass.com
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● 3D image from the world forms on an approximate 2D surface and then is reconstructed into
a 3D image
● Has to integrate 2 different images that have disparate and overlapping receptive fields
● Integrate a visual world that is quite larger than the receptive field of an eye
● Protect the sensory transduction apparatus of the eye
● Makes sense of a limited range of electromagnetic radiation
Aspects of the visual system
● Primary aspects of the visual system
○ Aspects of the visual system that help transduce electromagnetic information into a
form that the brain can understand
■ Eye
○ Initial breakdown of visual information
■ Ganglion neurons
■ Lateral geniculate nucleus
● Secondary aspects of the visual system
○ Aspects of the visual system that helps put visual information together
○ Primary visual cortex
○ Associational visual cortices
○ Different streams of visual processing
Characteristics of light
● Wave-like properties (frequency, wavelength) of light gives light its color properties
○ Hue
■ How long the wavelength of electromagnetic radiation is
■ Short wavelengths give a purplish color while long wavelengths give a reddish
color
○ Brightness
■ Amount of electromagnetic radiation reflected by a surface
■ Lots of reflections lead to bright colors and vice-versa
○ Saturation
■ Refers to the mixture of different kinds of wavelengths being reflected from a
surface
● Particle-like properties
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
3d image from the world forms on an approximate 2d surface and then is reconstructed into a 3d image. Has to integrate 2 different images that have disparate and overlapping receptive fields. Integrate a visual world that is quite larger than the receptive field of an eye. Protect the sensory transduction apparatus of the eye. Makes sense of a limited range of electromagnetic radiation. Aspects of the visual system that help transduce electromagnetic information into a form that the brain can understand. Aspects of the visual system that helps put visual information together. Wave-like properties (frequency, wavelength) of light gives light its color properties. How long the wavelength of electromagnetic radiation is. Short wavelengths give a purplish color while long wavelengths give a reddish color. Amount of electromagnetic radiation reflected by a surface. Lots of reflections lead to bright colors and vice-versa. Refers to the mixture of different kinds of wavelengths being reflected from a surface.
