Flashcards in Neuropsych Deck (294)
Network of neurons that extends from the spinal cord, through the hindbrain and midbrain. Plays a role in the sleep/wake cycle, arousal, attention, pain, and touch.
Ventral Tegmental Area (VTA)
Group of neurons in the base of the midbrain, which are involved in the reward system of the brain
Involved in movements such as arm swinging while walking and crawling in babies.
Contains a large number of dopamine-producing neurons, associated with voluntary movement and motor planning
Receives sensory info fromt he ear and relays auditory stimuli
Process info related to visual stimuli and is associated with eye movements
Equally prevalent in males and females; difficulty perceiving short wave lengths (blue and yellow) because retina lacks blue cones; sees reds and greens normally, however sky is green and yellow objects look pink
AKA second color deficit; confuse green and red; remainder of color cision normal. More common in males. (Green cones are filled with red spin).
AKA first color deficit; they have good acuity in short wavelengths (blue and yellow) but lose color perception at higher wave lengths; confuse reds and greens as they look yellowish; more common in males
Condition in which one is unable to associate a color with a particular object; a person with this condition may not know what the color of an elephant is
Inability to name colors one sees. Not a visual problem, but a problem with verbalization and word-finding
Damage to V5
Loss of ability to see movement. Can see still objects, but object will disappear if it begins to move
Damage to both V3 and V4
Complete loss of form perception
Damage to V4
Loss of ability to perceive color, known as cerebral achromatopsia. See the world in shades of gray. Dyschromatopsia refers to partial loss in color perception and is more common
Damage to V3
Partial loss of form perception
Damage to V2
Global disruptions in vision, with impairments in ability to distinguish form, movement, color, and spatial orientation of patterns
Damage to V1
Most serious of visual impairments. Partial blindness in both eyes. Blindsight: a condition in which patients report seeing nothing, but respond to change in visual field, such as movement, due to visual processing still occurring at lower levels.
Damage to the optic chasm will affect input from one half of our visual field from both eyes, thereby causing bilateral heminaopia that affects one medial and one lateral input
Blindness in part fo the visual field caused by damage to either optic nerve. Damage to the medial optic nerve at optic chasm leads to loss of vision in temporal half of both eyes, or bilateral hemianopia.
Critical for the detection of form while in motion
Function is primarily color processing, although some cells within V4 respond to both form and color
Predominantly devoted to form perception
Sends visual projections to lower visual areas. Heterogenous with V1 in function, performs some color, form, and mvmt processing and processing spatial info
Primary visual cortex
AKA - V1 and striate cortex. Largest most important visual area. All visual input comes here first then projected to the other occipital areas. responsible for perception of sight.
Vision and occipital lobe
Lateral inputs are projected to the anterior portion of the occipital lobe. Medial inputs are directed to posterior portions of the occipital lobe
Basal ganglia (caudate nucleus and putamen), globus pallidus, thalamus, substantia nigra, and cerebellum
Located in the temporal lobe and include: hippocampus, amygdala, temporal cortex. These structures connected through the thalamus to the prefontal cortex
Involved with the brain's ability to recognize objects. Responsible for vision.
Responsible for hearing, memory, meaning, and language. Plays a role in emotion and learning. Concerned with interpreting and processing auditory stimuli.