Higher Vision
These two forms of vision processing remain largely separated from the retina through cortex.
What is form and movement processing?
This is the name of the spinal ganglion that carries motor control axons.
What is the ventral root ganglion?
This layer of cortex receives thalamic input.
What is layer 4?
This property of a sensory receptor would be expected to be faster for receptors optimized for change detection than form detection.
What is adaptation?
These are the names of the two main central vision processing streams that become anatomically separated as they progress from primary visual cortex.
What are the dorsal and ventral streams?
This motor neuron drives muscle movement
What are alpha motor neurons?
This is the one sensory modality that does not necessarily relay through the thalamus on the way to primary sensory cortex.
What is olfaction?
This neurotransmitter is required for action initiation by the basal ganglia.
What is dopamine?
This property of visual area MT helps it to avoid the aperture problem of motion perception.
What are large receptive fields?
These motor neurons control the tension and responsiveness of muscles.
What are gamma motor neurons?
This method of coding makes it possible to resolve ambiguity between multiple different stimuli that cause the same level of activation in a single receptor.
What is population coding?
This is the name of the process by which a stimulus is converted into a nerve impulse.
What is sensory transduction?
A lesion to this area would be expected to result in difficulty with localizing where a stimulus is in a visual scene.
What is the dorsal stream? Or What is the parietal lobe?
These are the three primary inputs to alpha motor neurons.
What are the brain, spinal interneurons, and sensory 1a sensory neurons?
This can be expected of the relative cortical allocation for the fovea vs. peripheral parts of the retina.
What is increased cortical allocation?
Somatotopy, tonotopy, retinotopy are all examples of this.
What is topographic coding?
This is why color perception is not simply the detection of the wavelength of light reflecting from an object.
What is perception depends upon the illuminant?
This portion of spinal grey matter houses alpha motor neurons controlling distal muscles.
What is the lateral portion?
Across the senses, this happens to the receptive field size and specificity as you move from primary sensory cortex to higher levels.
Who is receptive fields get larger and specificity gets higher?
This is where sensory information is first processed in cortex.
What is the primary sensory area (as opposed to the secondary areas)?