Measuring brain activity Blood flow fMRI, PET, NIRS Electrical activity EEG.

Slides:

Advertisements

Similar presentations

Chapter 4: Local integration 2: Neural correlates of the BOLD signal

Advertisements

Sleep Sleep is a naturally recurring state characterized by altered consciousness, relatively inhibited sensory activity, and inhibition of nearly all.

Unit 4: How do our neurons work together to control behaviors?

For Neurology Residents

Electrophysiology.

1. Electroencephalography Definition - EEG is a surface recording of the electrical activity of nerve cells of the brain - Electrode placement (10 / 20.

Opportunity to Participate

Experimental Design in fMRI

Cognitive Neuroscience z What do neurons have to do with cognition? z How can neurons do complex things? z How do we know how the brain works? z What.

Abstract  Obstructive Sleep Apnea Syndrome (OSAS) is a very common sleep disorder with potential severe implications in essential aspects and the patient's.

Research Methods Psychology Or, so how do we know this stuff We can look at the whole brain We can look at the whole brain We can look at parts.

Rhythms. Types of Rhythms Circadian: about 24 hours Ultradian: less than 24 hours.

Four Main Approaches Experimental cognitive psychology Cognitive neuropsychology Computational cognitive science Cognitive neuroscience.

Experiment Design 4: Theoretical + Operational Def’ns Martin Ch. 7.

Introduction to the nervous System

1 Neurocognitive Psychology Dr. Lars Kuchinke Freie Universität Berlin SoSe Introduction - outline Lecture: 1) History 2)

How Do We Know What We Know? Neuroscience Methods.

Sleep and Dreaming Methodology PAGE 48. EEG  electroencephalogram.

COMSATS Institute of Information Technology,Sahiwal.

IMAGING THE MIND Direct methods –Electrical activity (EEG, MEG) –Metabolic activity (EROS) Indirect methods –Changes in regional Cerebral Blood Flow (rCBF)

Lecture – 14 Dr. Zahoor Ali Shaikh 1. What is Sleep ?  Sleep is a state when person is not aware of surrounding. Sleep is active process. It consist.

Functional Brain Signal Processing: Current Trends and Future Directions Kaushik Majumdar Indian Statistical Institute Bangalore Center

Your brain is made up of billions of brain cells called neurons, which use electricity to communicate with each other. The combination of millions of neurons.

Introduction to EEG Rachel Garvin, MD Neurocritical Care UTHSCSA.

Ways to study the Brain!!! Accidents: damage to brain regions can tell us about their functions Phineas Gage.

Recording of electrical activity / electrical stimulation of brain tissue Spike trains Spikes.

Functional Brain Signal Processing: EEG & fMRI Lesson 4

1 Sleeping and Dreaming. 2 Waking Consciousness  Selective Attention- The ability to focus conscious awareness on a particular stimulus.  Demo- Human.

 Difficult to measure consciousness.  A state of consciousness is referred to as a hypothetical construct.  I.e., a concept used to describe something.

J. Lauwereyns, Ph.D. Professor Graduate School of Systems Life Sciences Kyushu University Basic neuroscience Introduction.

Cognitive Psychology PSYC231 Cognition and the Brain: Basic Principles 2 Dr. Jan Lauwereyns, EA619, ext

Phrenology Wrong!. Outer Surface of Human Brain Gray Matter = Neuron cell bodies & dendrites White Matter = Myelin (=fat)- covered axons Cortex = Outer.

Sleep and Dreams. I. Facts about Sleep  One-Third of our adult lives are spent in sleep  Experts recommend 8 hours of sleep a night –A typical adult.

Psychology Discovering the Brains Mysteries: Machines that can see into your brain.

4 Types of brain imaging techniques: Microelectrode: Examines individual neurons Macroelectrode: Examines brain activity without producing an image (Ex:

1 Psychology 304: Brain and Behaviour Lecture 2. 2 Research Methods 1.What techniques do biological psychologists use to assess the structure and function.

Reverse engineering the brain Prof. Jan Lauwereyns Advanced Engineering A.

Methodology in the Biological Level of Analysis Learning Objectives: 1.Discuss how and why particular research methods are used at the biological level.

1 Psychology 304: Brain and Behaviour Lecture 4. 2 Research Methods and The Structure of the Nervous System 2. What are the primary divisions of the nervous.

Computer Architecture and Networks Lab. 컴퓨터 구조 및 네트워크 연구실 EEG Oscillations and Wavelet Analysis 이 윤 섭이 윤 섭.

Biology and Behavior Neuroscience  Scientific study of the brain and of the links between brain activity and behavior.

PHYSIOLOGY LAB EEG I. The cerebral cortex is composed of nerve cells, many of which are functionally connected to each other, and connected to other parts.

Nervous System Structure and organization of the nervous system

Methods used for studying brain development

EEG Definitions EEG1: electroencephalogram—i.e., the “data”

SCHEMATIC DIAGRAM OF AN EEG MACHINE

EEG, Event-related potential (ERP), Magnetoencephalography (MEG)

Introduction to ERPs.

States Of Consciousness

AIM: What are some methods used by psychologists to study the brain?

ELECTRICITY WITHIN THE BODY

Ways to study the Brain!!! Accidents: damage to brain regions can tell us about their functions Phineas Gage.

Brain: Higher Functions

Sleep Patterns & Sleep Theories

Brain Wave States Theta Delta REM sleep; when we dream

TRENDS IN CNS DEVELOPMENT

Ultradian Rhythm STAGES OF SLEEP: Link to Spec 4.2.2

Ways of Studying the Brain

Ways of Studying the Brain

H-Current Neuron Volume 21, Issue 1, Pages 9-12 (July 1998)

The Brain Tools of Discovery Older Brain Structures The Limbic System

Ways to study the Brain!!! Accidents: damage to brain regions can tell us about their functions Phineas Gage.

The Brain Structures Brain Diagram -

Sleep stages Awake Stage 1 Stage 2 Stage 3 Stage 4

Sleep and Arousal Prof. K. Sivapalan.

Ways to study the Brain!!! Accidents: damage to brain regions can tell us about their functions Phineas Gage.

Electroencephalogram (EEG)

Sleep and Arousal Prof. K. Sivapalan.

Figure 2 EEG changes in the patients with paroxysmal hypnogenic dyskinesia with PRRT2 mutations EEG changes in the patients with paroxysmal hypnogenic.

Presentation transcript:

Measuring brain activity Blood flow fMRI, PET, NIRS Electrical activity EEG

Measuring brain activity Blood flow fMRI, PET, NIRS Electrical activity EEG, MEG, Intracranial, Single cell, Intracellular

Measuring brain activity Blood flow fMRI, PET, NIRS Electrical activity = Can be direct, when you insert the electrode in the brain, or even in the neuron

Awake REM Stage 1 Stage 3 Stage 2 Stage 4 alphabeta thetabeta theta delta alpha beta thetabeta theta delta Slow waves, hence ‘slow-wave sleep’ Brain waves and sleep states K

Effects of attention

Gambling and the frustrated brain

ERP: event-related potential Channel FCz: electrode over Frontal Cortex, central

Single-unit studies, recording electrical discharges of individual neurons

The work of Wolfram Schultz et al. Dopamine neurons & reward

Not a response to reward itself, but to information about reward More than predicted (“unexpected”) = increased activity Exactly as predicted (“expected”) = no change in activity Less than predicted (“unexpected”) = reduced activity