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38 Cards in this Set

  • Front
  • Back

Nucleus in Thalamus that processes most visual information from eye

Lateral Geniculate Nucleus (LGN)

Frequency gradients (high vs. low) that V1 cells in Parvocellular Pathway are most sensitive to

High Frequency

Frequency gradients (high vs. low) in Magnocellular Pathway are most sensitive to

Low Frequency

End of Parvocellular Pathway, includes cells that prefer, hand, face, other complex stimulation

Inferior Temporal (IT)

Cortex with direction-sensitive cells, responds best to stimulus moving across retina

MT (Medial Temporal)

Cortex with optic-flow detectors that respond best to contraction/expansion of whole scene

MST (Medial Superior Temporal)

In V2 or MT, cells that respond to degrees of difference between location of an image on to retina

Disparity Detectors

Cells to which auditory receptors communicate, whose axons exit to brain

Spiral Ganglions (ANF)

Relative levels of activity across differentially-resonating Basilar Membrane code frequency

Place Coding

Ganglions involved in the Volley Principle can all only fire at the same phase (e.g.) peak of input wave

Phase Locked

Differences used for localization, caused by "head shadow" attenuating high frequencies

Amplitude Differences

Differences used for localization, comparing peak and trough of lower frequencies

Phase Differences

Differences used for localization, per race of left vs. right onset signals to Superior Olive

Timing Differences

Receptors Cells that show divergent connectivity, for detail frequency discrimination

Inner Hair Cells

Receptor Cells that show convergent connectivity, for loudness discrimination

Outer Hair Cells

(Audition) Next synapse in Medulla after 8th Cranial Nerve, beginning of separate information pathways, Monaural site

Cochlear Nucleus

Cell in Cochlear Nucleus that transforms incoming signal into transient burst

Onset Cell

Cell in Cochlear Nucleus that transforms incoming signal into one graded, increasing amplitude

Build up cell

Auditory site in Medulla, responsible for Orienting Reflex

Superior Olive

Auditory site in Midbrain, where information is integrated with visual at nearby site

Inferior Colliculus

Auditory site in Thalamus, site of A1

Medial Geniculate Nucleus - MGN

Nucleus of Thalamus in somatosensory pathway

Ventral Posterior Nucleus - VPN

Path for pain and temperature information to brain, crossing over in Spinal Cord

Spinal Thalamic Pathway

Path for touch and internal motion information to brain, crossing over in Brainstem

Medial Lemniscal Pathway

When damage to one side of spine results in different losses on ipsi vs. contra-lateral sides

Brown-Sequard Syndrome

Location of Primary Projection Area (S1) for somatosensory information

Post Central Gyrus

Midbrain area that is probably the source of blocking of pain (as in Gate Theory)

Periaqueductal Grey Area

Type of inter-neuron in spine that responds to Endorphins

Inhibitory Inter-neuron (SG)

A proprioceptor that detects passive stretch of a muscle, triggering Stretch Reflex

Spindle

Area of cortex that includes body map, sends movement commands to Stem and Cord

Primary Motor Cortex

Location of the Primary Motor Cortex

Pre-Central Gyrus

Anterior to the Pre-Central Gyrus, active during preparation to move, receives especially from Visua-Spatial areas

Premotor Cortex

Dorsal to Broca's Area, also active during preparation, especially for rapid moves, receives from Parietal

Supplementary Motor Cortex

Fast, crossing paths from Pyramids in cortex, especially for precise control of peripheral moves

Cortico-Spinal Pathway

Cortico-Spinal Pathway stops at this Midbrain structure on way from Cortex to Medulla and Cord

Red Nucleus (of Tegmentum)

Central areas that receive from "telephone poles" and send output to Brain/Cord

Deep Nuclei

Set of forebrain structures controlling posture, muscle tone, and smooth movement

Basal Ganglia

Midbrain structure whose dopaminergic axons synapse in Basal Ganglia

Substantia Nigra