Which one of the following models proposes that there are three major functional units of the brain: focussing on sustaining attention; receiving and storing information and planning and self-monitoring?
Understanding Brain Functional Units: The PASS Model
The question asks to identify a cognitive model that divides the brain's functions into three main units: attention, information processing, and planning/monitoring.
The model that fits this description is the PASS model.
The PASS Model Explained
Developed by Jack Naglieri and John Das, the PASS model outlines cognitive processing through four interconnected components, which align with the three functional units mentioned:
- Planning: This component relates directly to the brain's ability for "planning and self-monitoring." It involves cognitive control, strategy development, and problem-solving.
- Attention: This corresponds to the function of "sustaining attention." It enables focus, concentration, and the selection of relevant information while ignoring distractions.
- Simultaneous and Successive Processing: These two types of information processing work together to cover the "receiving and storing information" function. Simultaneous processing integrates information into a unified whole, while Successive processing deals with information sequentially.
Therefore, the PASS model accurately describes the brain functions specified in the question.
Why Other Models Are Less Suitable
- Atkinson and Shiffrin model: This is a classic model of memory, detailing its stages (sensory, short-term, long-term) rather than the broad functional units asked about.
- Kar and Parrila's model & Hunt's model: These models focus on different aspects of cognition or information processing and do not specifically propose the three functional units described in the question.
Important Questions from Nervous system
Which one of the following synaptic vesicle proteins is involved in tethering of the vesicle to the cytoskeletal system in the nerve terminus?
In the nervous system, the action potential is generated at the axon hillock in physiological conditions and it is conducted to the terminal end of axon. The location specific origin of action potential and its direction-specific conduction are explained by a researcher in the following proposed statements:
A. The membrane of axon hillock has highest threshold for the generation of action potential
B. The membrane of axon hillock contains large numbers of voltage-gated Na+ channels and that makes it more excitable
C. The propagating action potential in the middle of the axon cannot generate another action potential in the direction of cell body since a large fraction of voltage-gated Na+ channels in the preceding portion is voltage inactivated
D. As the number of voltage-gated Na+ channels is less in the preceding portion of axonal membrane, the propagating action potential in the middle of the axon cannot generate another action potential in the direction of cell body.
Which one of the following combinations represents both correct explanations?
Which one of the following is NOT released by sympathetic preganglionic neurons?
The time taken by synaptic vesicles to travel from the soma of a motor neuron in the spinal cord to its neuromuscular junction in a person’s foot by fast axon transport is about‐
The release of which neurotransmitter from the rods of retina is reduced when light strikes its outer segment?
