Picture Gallery of
some techniques covered in the Brain Imaging Laboratory Course
Walter Schneider
Instructor, M/W 4-5:15, lab Friday 1-5PM
Brain
Executive System. Areas active
when attending, making a decision, planning, and taking action.
In the task
subjects look for a line at a given orientation in different parts of the
visual field. Seven bilateral areas are
activate in hundreds of studies. They
are domain general (respond to different types of information such as sounds or
visual features) but have different processing rolls (attention switch,
response execution, decision making, working memory.
Brain
Representation of Semantics. Areas coding the semantic information. In the task subjects generate synonyms to the meaning
of words (e.g what is a close synonym to the meaning of “peach fruit” . Six areas were identified for gustatory, visual
object, body part, auditory, somatosensory
& motor representation. See
Goldberg, R.F., Perfetti, C.A., Schneider, W.
(2006) Distinct and common cortical activations for multimodal semantic
categories. Cognitive, Affective, and Behavioral Neuroscience. 6, 214-222.
Mapping
Fiber Connections Between Brain Areas. Example of
high resolution Diffusion Spectrum/Diffusion Tensor Imaging. This allows mapping fine connective structure
of cortical to cortical areas non-invasively in live humans. This allows study of anatomical
pathways. This image is the connectivity
to the thalamus. Note most of the brain
areas connect to the thalamus and then to the control network (see figure
above).
) Brain Voyager Getting Started Guide