lecture 1: intro Flashcards
Neuroscience
the scientific study of the brain and
nervous system
Cognition
mental processes involved in knowing and thinking
Cognitive neuroscience
the scientific study of how the brain
produces thoughts, ideas, and related mental phenomena
ALZHEIMER’S
Form of progressive dementia.
Most common dementia affecting nearly half of
adults over 85.
Increasing age is the biggest risk factor; family history
is second.
Memory is affected early but not exclusively.
Medial temporal lobe is affected early but not
exclusively.
hippocampus
The hippocampus is located deep in the brain, hidden within the medial part of the temporal lobe.
The hippocampus is involved in long-term memory formation and memory retrieval. It also plays a role in spatial memory, allowing individuals to keep track of where objects are and the position of their body relative to the objects around them.
Neuropathology of Alzheimer’s disease:
Neurofibrillary tangles
Amyloid Plaques
Neurofibrillary tangles
Neurofibrillary tangles are twisted fibers produced by abnormal tau proteins that are likely related to cognitive decline in Alzheimer’s disease
Amyloid plaques
Amyloid is a protein that is normally found
throughout the body. For reasons as yet unknown, in
AD, the protein divides improperly, creating a form
called beta amyloid which is toxic to neurons in the
brain
Opioid Crisis
In late 1990’s pharmaceutical companies reassured the
medical community that patients would not become
addicted to prescription opiod pain relievers, and they
were prescribed with increasing frequency
- This resulted in widespread misuse of these medications
that are clearly highly addictive - In 2017, due to a substantial increase rates of addiction
and overdose deaths, the Department of Health and
Human Services declared opioid use a public health
emergency
Medication to Assist Treatment:
Combining psychological and neuorobiological treatments
* Drugs that mimic the action of typical opioids on the brain, without
the ‘high’ (methadone, buprenorphine)
* These drugs reduce withdrawal symptoms and cravings, resulting in
significantly reduced rates of relapse and likelihood of overdose
* Is the “gold standard” of opioid use disorder treatment, but is
underutilized due to stigma
Brain Changes with Addiction
nora volkow advocates for decreased stigma around addiction
wilder penfield
While operating on epileptic patients, Penfield applied electric currents to the surface of patients’ brains in order to find problem areas. Since the patients were awake during the operations, they could tell Penfield what they were experiencing. Probing some areas triggered whole memory sequences.
mapped out m1 and v1 as well as homonculus
phrenology
the detailed study of the shape and size of the cranium as a supposed indication of character and mental abilities.
In the case of slavery, physicians such as Charles Caldwell used phrenology to attempt to prove that African people were in their rightful place as slaves. Caldwell studied the skulls of many different peoples, including Africans, at the Musee de Phrenologie in Paris
mind body problem
the problem of how a physical substance (the brain) can give rise to our sensations, thoughts, and emotions (our mind)
dualism
the belief the mind and brain are made up of different kinds of substance