COGS 11 Minds and Brain

What are the Joint Representations

Body Schema and Body Image

Body Schema

Proprioception (self aware where body parts are)

unconscious

Body Image

Social belief and visual

conscious

Central Sulcus

What is a cortex

the wrinkled and outermost layer of the cerebrum

Does information go in or out of the Primary motor cortex

efferent, exit

Does information go in or out of the Primary somatosensory

Afferent, in

Functions of the Frontal Lobe

thinking, planning, movement, and personality

Functions of the Temporal Lobe

hearing, memory, and language understanding

Functions of the Occipital Lobe

vision, color, and shape recognition

Functions of the Parietal Lobe

sensory input, touch, and spatial awareness

How does the brain control the body

Contralateral Mapping

The right parietal lobe controls?

Both side

The left parietal lobe controls?

only right

What if the right parietal lobe gets damaged?

the right side would still be able to move due to the left parietal lobe

What if the left parietal lobe gets damaged?

All limbs should still be able to move and be in control due to right parietal lobe

Bilateral Representation

The hypothesis that the right parietal lobe contains a representation of both the left and right body

Somatoparaphrenia

Refusal to believe that their limbs belong to them

Disownership of body on the contralateral (opposite) side of the lesion (damage)

What is alien hand syndrome caused by?

Bleedings, strokes, tumors

Where is the cause of alien hand syndrome located?

corpus callosum - medial frontal cortex

What is the behavior of Alien Hand Syndrome?

cannot identify hand as own and cannot be controlled (anarchic)

What is the difference between Somatoparaphrenia and Alien Hand Syndrome?

Somatoparaphrenia Limbs are paralyzed limbs while Alien Hand Syndrome limbs can act involuntarily

Hemispatial Neglect

Left side of the sensory space becomes non-existent

Allocentric

Object to Object

Egocentric

Self to object

Anosognosia

When a person lacks awareness on their own disability or illness

Confabulation

Information at the damage site is not transferred via the corpus callosum

The left brain is clueless about the defect

Apotemnophilia - Body Integrity Identity Disorder (BIID)

Overwhelming desire to amputate one or more healthy limbs

Majority is the left limbs

Why? - Feels like it does not belong to them, huge stress