Visual System 1
Energy (light, sound, heat) -> Action Potentials -> Nervous System -> Perception
What are the 3 types of visual Agnosias
Apperceptive
Associative
Prosopagnosia
Pitch, loudness and timbre
What is the type of hearing loss caused by brain lesions (ex. stroke)?
Central Deafness
Information about location of body in space
Proprioception
Our eyes make these kinds of small, jerky movements when reading words on a page or scanning a scene
Saccade
Name one of the two coding of color theories
Trichromatic/Opponent Processing
What transmits sound energy to the middle ear?
Tympanic membrane
The posterior stream of the auditory association cortex is responsible for?
Sound localization and “Where” stream
Name the 2 encapsulated mechanoreceptors
Meissner’s corpuscles & Pacinian corpuscles
The Optic disk is also referred to as the.....
The blind spot
The Lateral Geniculate Nucleus (LGN) is located in what part of the brain?
Thalamus
The middle ear is made up of which 4 components?
Ossicles, oval window, round window and tympanic membrane
In the Basilar membrane, higher frequencies towards the
Base
Name the 4 steps of the Gustatory Pathway
→ Brainstem (medulla)
→ Thalamus
→ Primary Gustatory Cortex
→ Secondary Gustatory Cortex
This is the tough white, outer layer of the eye. Opaque, and doesn’t allow entry of light into the eye
Sclera
What is the responsibility of the ventral pathway of the visual association cortex
Size, shape, color, texture of objects,
including people
• “What” info
Movement of cilia towards the tallest causes what reaction?
Depolarization (opens ion channels)
The _______ is sometimes referred to as the Belt & Parabelt region
Auditory Association Cortex
Nociception occurs in what 4 phases
Transduction
Transmission
Perception
Modulation
Describe the 3 properties of visual stimuli
Hue(Determined by wavelength, Slower oscillations lead to longer wavelengths & vice versa)
Saturation (Relative purity of the light being perceived)
Brightness (Determined by intensity of the light)
Shining a light on the surround of an ON retinal ganglion cell will result in...
a decrease in firing rate
Describe the auditory pathway beginning with the cochlea
cochlea -> aud. nerve -> Medulla -> Inferior colliculi(midbrain) -> Medial Geniculate Nucleus
(Thalamus)-> Primary -> Auditory Association
Low frequencies are determined by __________ while moderate to high frequencies are determined by _______________
The number of hair cell axons firing & by rate of APs from hair cells
This type of pain treatment may activate endorphin-mediated pain control system
Placebo